,a ,,manual ,,of ,,conchology1 ,,according ,,to ,,the ,,system ,,laid ,,down ,,by ,,lamarck1 ,,with ,,the ,,late ,,improvements ,,by ,,de ,,blainville4 ,,exemplified ,,and ,,arranged ,,for ,,the ,,use ,,of ,,students4 ,,by ,,thomas ,,wyatt1 ,m4,a4 ,,illustrated ,,by ,,thirty-,,six ,,plates ,,containing ,,more ,,than ,,two ,,hundred ,,types1 ,,drawn ,,from ,,the ,,natural ,,shell4 ,,new-,,york3 ,,harper ,,brothers1 ,,cliff-,,street4 #ahch4 ,entered1 according to ,act of ,congress1 in the year #ahch1 by ,,thomas ,,wyatt1 in the ,clerk's ,office of the ,eastern ,district of ,pennsylvania4 ---------------------------------------- -------------------------------- ,,introduction4 ,conchology or ,testaceology is a numerous and beautiful branch of ,natural ,history1 treating of the testaceous covering of animals2 perhaps none but the department of ,flora can vie with it in variety1 symmetry of form1 and rich colouring4 ,it has ever excited admiration1 and obtained a prominent situation in the cabinet2 and so great are the facilities afforded at the present day to procure specimens and obtain a knowledge of this science1 that it has become one of the requisites of a finished education4 ,shells are found in all parts of the world1 both on land and in water2 but the most beautiful and valuable species are found between the tropics4 ,at first they were regarded as pleasing curiosities1 and prized only on that account2 but the investigations of scientific men have proved that the study of this science is not only interesting1 but useful4 ,much valuable information has already been obtained1 and1 from the investigations of modern naturalists1 much more may be anticipated4 ,so intimate is the connexion between ,conchology and ,geology1 that a knowledge of the one is indispensable to the study and acquirement of the other4 ,the geologist will draw much advantage from a close study of the testaceous covering of molluscous animals to aid him in determining the identity or the superposition of the different strata of the earth and the extraordinary changes it has undergone2 for1 as ,bergman elegantly says1 8fossil shells1 coral1 and wood are the only three remaining medals of ,creation40 ,he will see in the innumerable quantity of these animals1 succeeding each other from generation to generation in the depth of the seas1 one of the evident causes of the growth and increase of islands and continents4 ,but man may find in the knowledge of ,mollusca applications still more direct to his well being in society1 both as to the advantages and disadvantages to be derived from them3 thus a great number of species are proper for food1 as oysters1 mussels1 c41 which are objects of commercial speculations4 ,the ,pinna furnishes the ,italians with materials for a rich dress1 and the pearl1 so much prized by the ,orientals1 by princes1 and particularly by the ladies1 as a modest and beautiful ornament1 is produced by a disease of the animals in certain species of shells4 ,it was this knowledge which made the celebrated ,linnus imagine that it was possible to form an artificial pearlery in the rivers of ,sweden4 ,the mother of pearl1 so much employed as an ornament in articles of luxury1 is only the interior lining of certain univalve or bivalve shells4 ,painting draws from some of these animals many colours1 valuable not so much for their beauty as their usefulness1 as ,chinese ink and sepia4 ,the brightest and richest colour known by the ancients1 and used by them for the celebrated ,tyrian purple dye1 is produced by animals at this time known by the name of ,purpura4 ,the ,teredo attacks the wood of our vessels1 and often does much injury2 therefore the knowledge of its manners1 habits1 and customs must be of great importance in countries infested with them1 so as to be able to provide a remedy against them4 ,snails and slugs are also enemies much to be dreaded in our gardens4 ,lamarck1 in his last work1 the result of the successive and continual labours of his whole life and those of his contemporaries1 has rendered a very great service to science1 but especially to conchology1 by describing1 or1 at least1 characterizing the numerous species of shells in his own splendid cabinet4 ,it may be proper here to remark1 that a part of ,lamarck's cabinet is now in the possession of ,isaac ,lea1 ,esq41 of ,philadelphia1 to whom we are much indebted for valuable assistance4 ,to ,dr4 ,comstock1 and the ,rev4 ,w4 ,turner1 of ,hartford1 ,conn41 we are much indebted for kind favours2 their aid has greatly facilitated our labours4 ,in this ,manual of ,conchology we have endeavoured to give a free translation of ,lamarck's system1 as simplified by ,de ,blainville2 and1 in order to facilitate as much as possible the study of this beautiful and interesting science1 we have divested it of numerous technicalities1 and divided it into four classes3 ,annelides1 ,cirrhipedes1 ,conchifera1 and ,mollusca4 ,to each class we have assigned its various families1 to each family its genera1 and to each genus its living species2 thereby making it plain and within the reach of the meanest capacity4 ,a type of almost every genus is given1 excepting only those shells which1 from their similarity to other genera1 may easily be classed4 ,it was deemed advisable1 as this is intended for an easy introduction to the science1 to omit many divisions and subdivisions1 which would only serve to perplex and render the attainment more difficult4 ,as the ,naiades1 or shells of this country1 are given in several valuable scientific works lately published1 we have only slightly touched them in the place they are intended to occupy4 ,we cannot expect that the work now presented to the public is free from imperfections2 but we ask for their lenity and kind forbearance to excuse whatever defects there may be in our humble attempts to advance the cause of science4 ,conchology1 like other departments of natural history1 is progressing2 and that which is given to-day is almost always susceptible of being modified to-morrow2 should this work be well received1 it is our intention to give1 as soon as practicable1 an enlarged work1 containing even the minute microscopic shells and the fossils1 with plates containing types of as many species of the genera as can possibly be obtained4 ,the plates were drawn and coloured with great care and accuracy from the natural shells in our own cabinet1 under the superintendence of ,mr4 ,james ,ackerman1 artist4 ,t4 ,w4 ,,arrangement4 ,,class ,i4 ,,annelides4 ,,four ,,families4 ,fam4 #a4 ,dorsali4 ,two genera4 #a4 ,arenicola4 ,species #a #b4 ,siliquaria4 8 #d #b4 ,maldani4 ,two genera4 #a4 ,clymene4 ,species #a #b4 ,dentalium4 8 #ab #c4 ,amphitrita4 ,four genera4 #a4 ,pectinaria4 ,species #b #b4 ,sabellaria4 8 #b #c4 ,terebella4 8 #c #d4 ,amphitrite4 8 #f #d4 ,serpulacea4 ,five genera4 #a4 ,spirorbis4 ,species #e #b4 ,serpula4 8 #bf #c4 ,vermilia4 8 #h #d4 ,galeolaria4 8 #b #e4 ,magilus4 8 #a ,,class ,,ii4 ,,cirrhipedes4 ,,one ,,family4 #a4 ,cirrhipedes4 ,ten genera4 #a4 ,tubicinella4 ,species #a #b4 ,coronula4 8 #c #c4 ,balanus4 8 #bh #d4 ,acasta4 8 #c #e4 ,creusia4 8 #c #f4 ,pyrgoma4 8 #a #g4 ,anatifera4 8 #e #h4 ,pollicipes4 8 #c #i4 ,cineras4 8 #a #aj4 ,otion4 8 #b ,,class ,,iii4 ,,conchifera4 ,,twenty ,,families4 #a4 ,tubicola4 ,six genera4 #a4 ,aspergillum4 ,species #d #b4 ,clavagella4 ,species #a #c4 ,fistulana4 8 #d #d4 ,septaria4 8 #a #e4 ,teredina4 8 #b #f4 ,teredo4 8 #b #b4 ,pholadaria4 ,two genera4 #a4 ,pholas4 ,species #i #b4 ,gastrochna4 8 #c #c4 ,solenides4 ,four genera4 #a4 ,solen4 ,species #ah #b4 ,panopa4 8 #a #c4 ,solecurtus4 8 #c #d4 ,glycimeris4 8 #a #d4 ,myaria4 ,two genera4 #a4 ,mya4 ,species #d #b4 ,anatina4 8 #aj #e4 ,mactracea4 ,seven genera4 #a4 ,lutraria4 ,species #aa #b4 ,mactra4 8 #cc #c4 ,crassatella4 8 #aa #d4 ,erycina4 8 #a #e4 ,ungulina4 8 #b #f4 ,solenimya4 8 #b #g4 ,amphidesma4 8 #af #f4 ,corbulacea4 ,two genera4 #a4 ,corbula4 ,species #i #b4 ,pandora4 8 #b #g4 ,lithophagi4 ,three genera4 #a4 ,saxicava4 ,species #e #b4 ,petricola4 8 #ac #c4 ,venerirupis4 8 #g #h4 ,nymphacea4 ,ten genera4 #a4 ,sanguinolaria4 ,species #d #b4 ,psammobia4 8 #ah #c4 ,psammota4 8 #g #d4 ,tellina4 8 #ed #e4 ,tellinides4 8 #a #f4 ,corbis4 8 #a #g4 ,lucina4 8 #bj #h4 ,donax4 8 #bg #i4 ,capsa4 8 #b #aj4 ,crassina4 8 #a #i4 ,conchacea4 ,seven genera4 #a4 ,cyclas4 ,species #aa #b4 ,cyrena4 8 #aj #c4 ,galathea4 ,species #a #d4 ,cyprina4 8 #b #e4 ,cytherea4 8 #gh #f4 ,venus4 8 #hh #g4 ,venericardia4 8 #a #aj4 ,cardiacea4 ,five genera4 #a4 ,cardium4 ,species #dh #b4 ,cardita4 8 #ba #c4 ,cypricardia4 8 #d #d4 ,hiatella4 8 #b #e4 ,isocardia4 8 #c #aa4 ,arcacea4 ,four genera4 #a4 ,cuculla4 ,species #a #b4 ,arca4 8 #cg #c4 ,pectunculus4 8 #ai #d4 ,nucula4 8 #f #ab4 ,trigonacea4 ,two genera4 #a4 ,trigonia4 ,species #a #b4 ,castalia4 8 #a #ac4 ,naiades4 ,four genera4 #a4 ,unio4 ,species #dh #b4 ,hyria4 8 #b #c4 ,anodonta4 8 #ae #d4 ,iridina4 8 #a #ad4 ,chamacea4 ,three genera4 #a4 ,diceras4 ,species #a #b4 ,chama4 8 #ag #c4 ,etheria4 8 #d #ae4 ,tridacnites4 ,two genera4 #a4 ,tridacna4 ,species #f #b4 ,hippopus4 8 #a #af4 ,mytilacea4 ,three genera4 #a4 ,mytilus4 ,species #ce #b4 ,modiola4 8 #bc #c4 ,pinna4 8 #ae #ag4 ,malleacea4 ,five genera4 #a4 ,crenatula4 ,species #g #b4 ,perna4 8 #aj #c4 ,malleus4 8 #f #d4 ,avicula4 8 #ac #e4 ,meleagrina4 8 #b #ah4 ,pectinides4 ,seven genera4 #a4 ,pedum4 ,species #a #b4 ,lima4 8 #f #c4 ,pecten4 8 #ei #d4 ,plagiostoma4 8 #aj #e4 ,plicatula4 8 #e #f4 ,spondylus4 8 #ba #g4 ,podopsis4 8 #b #ai4 ,ostracea4 ,six genera4 #a4 ,grypha4 ,species #a #b4 ,ostrea4 8 #dh #c4 ,vulsella4 ,species #f #d4 ,placuna4 8 #c #e4 ,anomia4 8 #i #f4 ,crania4 8 #a #bj4 ,brachiopoda4 ,three genera4 #a4 ,orbicula4 ,species #a #b4 ,terebratula4 8 #ab #c4 ,lingula4 8 #a ,,class ,,iv4 ,,mollusca4 ,,twenty-,,two ,,families4 #a4 ,pteropoda4 ,six genera4 #a4 ,hyala4 ,species #b #b4 ,clio4 8 #b #c4 ,cleodora4 8 #b #d4 ,limacina4 8 #a #e4 ,cymbulia4 8 #a #f4 ,pneumodermon4 8 #a #b4 ,phyllidiacea4 ,four genera4 #a4 ,phyllidia4 ,species #c #b4 ,chitonellus4 8 #b #c4 ,chiton4 8 #f #d4 ,patella4 8 #de #c4 ,calyptracea4 ,seven genera4 #a4 ,parmophora4 ,species #c #b4 ,emarginula4 8 #d #c4 ,fissurella4 8 #ai #d4 ,pileopsis4 8 #d #e4 ,calyptra4 8 #d #f4 ,crepidula4 8 #f #g4 ,ancylus4 8 #b #d4 ,bullacea4 ,three genera4 #a4 ,acera4 ,species #a #b4 ,bulla4 8 #a #c4 ,bulla4 8 #aa #e4 ,aplysiacea4 ,two genera4 #a4 ,aplysia4 ,species #c #b4 ,dolabella4 8 #b #f4 ,limacinea4 ,five genera4 #a4 ,onchidium4 ,species #b #b4 ,parmacella4 8 #a #c4 ,limax4 8 #d #d4 ,testacella4 8 #a #e4 ,vitrina4 8 #a #g4 ,colimacea4 ,eleven genera4 #a4 ,helix4 ,species #ajg #b4 ,carocolla4 8 #ae #c4 ,anostoma4 8 #b #d4 ,helicina4 8 #d #e4 ,pupa4 8 #bg #f4 ,clausilia4 ,species #ab #g4 ,bulimus4 8 #cd #h4 ,achatina4 8 #bj #i4 ,succinea4 8 #c #aj4 ,auricula4 8 #ad #aa4 ,cyclostoma4 8 #bh #h4 ,lymncea4 ,three genera4 #a4 ,planorbis4 ,species #ab #b4 ,physa4 8 #d #c4 ,lymna4 8 #aa #i4 ,melanides4 ,three genera4 #a4 ,melania4 ,species #af #b4 ,melanopsis4 8 #c #c4 ,pirena4 8 #d #aj4 ,peristomides4 ,three gen4 #a4 ,valvata4 ,species #a #b4 ,paludina4 8 #g #c4 ,ampullaria4 8 #aa #aa4 ,neritacea4 ,five genera4 #a4 ,neritina4 ,species #ba #b4 ,navicella4 8 #c #c4 ,nerita4 8 #ag #d4 ,natica4 8 #ca #e4 ,janthina4 8 #b #ab4 ,macrostomides4 ,four gen4 #a4 ,sigaretus4 ,species #d #b4 ,stomatella4 8 #e #c4 ,stomatia4 8 #b #d4 ,haliotis4 8 #ae #ac4 ,plicacea4 ,two genera4 #a4 ,tornatella4 ,species #f #b4 ,pyramidella4 8 #e #ad4 ,scalarides4 ,three genera4 #a4 ,vermetus4 ,species #a #b4 ,scalaria4 8 #g #c4 ,delphinula4 8 #c #ae4 ,turbinacea4 ,seven genera4 #a4 ,solarium4 ,species #g #b4 ,trochus4 8 #fi #c4 ,monodonta4 8 #bc #d4 ,turbo4 8 #cd #e4 ,planaxis4 8 #b #f4 ,phasianella4 8 #aj #g4 ,turritella4 8 #ac #af4 ,canalifera4 ,eleven genera4 #a4 ,cerithium4 ,species #cf #b4 ,pleurotoma4 ,species #bc #c4 ,turbinella4 8 #bc #d4 ,cancellaria4 8 #ab #e4 ,fasciolaria4 8 #h #f4 ,fusus4 8 #cg #g4 ,pyrula4 8 #bh #h4 ,struthiolaria4 8 #b #i4 ,ranella4 8 #ad #aj4 ,murex4 8 #ff #aa4 ,triton4 8 #ca #ag4 ,alata4 ,three genera4 #a4 ,rostellaria4 ,species #c #b4 ,pteroceras4 8 #g #c4 ,strombus4 8 #cb #ah4 ,purpurifera4 ,eleven gen4 #a4 ,cassidaria4 ,species #e #b4 ,cassis4 8 #be #c4 ,ricinula4 8 #i #d4 ,purpura4 8 #ej #e4 ,monoceros4 8 #e #f4 ,concholepas4 8 #a #g4 ,harpa4 8 #h #h4 ,dolium4 8 #g #i4 ,buccinum4 8 #eh #aj4 ,eburna4 8 #e #aa4 ,terebra4 8 #bd #ai4 ,columellaria4 ,five genera4 #a4 ,columbella4 ,species #ah #b4 ,mitra4 8 #hj #c4 ,voluta4 8 #dd #d4 ,marginella4 8 #bd #e4 ,volvaria4 8 #e #bj4 ,convoluta4 ,six genera4 #a4 ,ovula4 ,species #ab #b4 ,cypra4 8 #fh #c4 ,terebellum4 8 #a #d4 ,ancillaria4 8 #d #e4 ,oliva4 8 #fb #f4 ,conus4 8 #aha #ba4 ,nautilacea4 ,two genera4 #a4 ,spirula4 ,species #a #b4 ,nautilus4 8 #b #bb4 ,heteropoda4 ,two genera4 #a4 ,argonauta4 ,species #c #b4 ,carinaria4 8 #c ,,conchology4 ,,class ,i4 ,,annelides4 ,,contains ,,four ,,families4 ,,family ,i4 ,,dorsali4 ,two genera4 #a4 ,arenicola4 ,has no shell4 ,one species4 ,a4 piscatorium4 #b4 ,siliquaria4 ,four species4 ,shell very thin1 conical1 tubular1 involuted in a loose and irregular spiral manner2 aperture circular1 edges sharp1 interrupted in the middle by a notch prolonged like a slit through nearly all its length1 stopped abruptly at some distance from the summit4 ,siliquaria anguina4 ,s4 muricata4 ,s4 lvigata4 ,s4 lactea4 ,s4 anguina4 ,the ,snake ,siliquaria4 ,pl4 #cc1 fig4 #d4 ,shell tapering1 undulating1 spiral at the extremity4 ,s4 muricata4 ,the ,prickly ,siliquaria4 ,species armed with short spines or prickles2 aperture sometimes margined2 usually of a rosy or pink colour4 ,,family ,,ii4 ,,maldani4 ,two genera4 #a4 ,clymene4 ,one species4 ,c4 amphistoma4 ,the double-mouthed ,clymene4 ,tube thin and slender1 open at both ends2 incrusted externally with sand and fragments of shells4 #b4 ,dentalium4 ,the ,tooth ,shell4 ,twelve species4 ,this genus took its name from its resemblance to an elephant's tooth4 ,it is an attenuated conical tube1 slightly bent1 and open at both ends4 ,shell tubular1 regular1 symmetrical1 lightly curved longitudinally1 conic1 attenuated insensibly posteriorly1 and open at each extremity by a round orifice4 ,dentalium elephantinum4 ,d4 aprinum4 ,d4 fasciatum4 ,d4 entale4 ,d4 ,tarentinum4 ,d4 corneum4 ,d4 octoganum4 ,d4 novemcostatum4 ,d4 dentale4 ,d4 nigrum4 ,d4 politum4 ,d4 eburneum4 ,d4 elephantinum4 ,the ,elephant's ,tooth ,shell4 ,species in which the tube is striated or ribbed longitudinally2 the ribs are generally ten in number2 green colour4 ,d4 entale4 ,the common ,dentalium4 ,pl4 #cc1 fig4 #a4 ,species very minutely striated2 white or yellowish colour4 ,d4 pellucidum4 ,the pellucid ,dentalium4 ,species narrow and thin2 pale topaz colour4 ,d4 politum4 ,the ring-striated ,tooth ,shell4 ,species finely pointed1 solid1 striated annularly2 generally rosy or pink colour4 ,d4 rectum4 ,the straight ,tooth ,shell4 ,species entirely straight1 with longitudinal ribs4 ,d4 eburneum4 ,the ,ivory ,tooth ,shell4 ,species of a reddish or pale yellow colour1 with the tip frequently tinged with orange or pink4 ,,family ,,iii4 ,,amphitrit,a4 ,four genera4 ,the similarity of the four genera comprising this family is such1 that it was thought sufficient to give only one type 7the sabellaria crassissima71 as the student may easily recognise the others4 #a4 ,pectinaria4 ,two species4 ,a membranous or papyraceous tube1 in the form of a reversed cone2 unfixed2 exterior covered with sandy adhesions4 ,pectinaria ,belgica4 ,pectinaria capensis4 ,p4 ,belgica4 ,the ,belgic ,pectinaria4 ,tube inversely conic1 membranous1 and covered with sand4 #b4 ,sabellaria4 ,two species4 ,the covering of the animal belonging to this genus is composed of fragments and particles of marine substances1 adhering to a tubular membrane2 some are detached and others are fixed4 ,the tubes are cellular at the base1 and the orifice expanded4 ,sabellaria alveolata4 ,sabellaria crassissima4 ,s4 alveolata4 ,the ,honeycomb ,sabellaria4 ,consists of numerous parallel tubes1 nearly straight1 communicating by an aperture1 forming when in mass the appearance of a honeycomb2 it adheres to rocks in clusters4 ,s4 crassissima4 ,the very thick or strong ,sabellaria4 ,pl4 #cc1 fig4 #b4 ,species incrusted with small stones2 sometimes found thick and of a large size4 #c4 ,terebella4 ,three species4 ,tube elongated1 cylindrical1 membranous1 attenuated and pointed at the base1 with adhesions of sand4 ,terebella conchilega4 ,t4 cristata4 ,t4 ventricosa4 ,t4 conchilega4 ,the shelly ,terebella4 ,tube covered with numerous fragments of broken shells4 #d4 ,amphitrite4 ,six species4 ,nearly the same as the ,terebella1 but of a tougher membranous texture1 and generally without adhesions4 ,amphitrite ventilabrum4 ,a4 penicillus4 ,a4 magnifica4 ,a4 vesiculosa4 ,a4 volutacornis4 ,a4 infundibulum4 ,a4 ventilabrum4 ,the ,fan ,amphitrite4 ,tube subulate1 smooth1 of a yellowish colour4 ,,family ,,iv4 ,,serpulacea4 ,five genera4 #a4 ,spirorbis4 ,five species4 ,tube testaceous1 spirally twisted on a horizontal plane1 with terminal aperture rounded or angular1 attached by the lower part to marine substances4 ,spirorbis ,nautiloides4 ,s4 spirillum4 ,s4 carinata4 ,s4 lamellosa4 ,s4 tricostalis4 ,s4 ,nautiloides4 ,the ,nautilus-shaped ,spirorbis4 ,white1 transversely wrinkled and minute4 #b4 ,serpula4 ,the ,worm ,shell4 ,twenty-six species4 ,the name of this genus is derived from the ,latin word serpo1 to creep1 on account of the vermiform character of some of its species4 ,they are invariably tubular1 sometimes solitary1 but more frequently in clusters spirally entwined1 adhering to marine substances4 ,in colour they are brown1 purple1 yellow1 tawny1 pink or white1 and sometimes tinged with green4 ,tube solid1 calcareous1 irregularly twisted1 fixed to other substances4 ,serpula vermicularis4 ,s4 fascicularis4 ,s4 intestinum4 ,s4 contortuplicata4 ,s4 plicaria4 ,s4 glomerata4 ,s4 decussata4 ,s4 protensa4 ,s4 infundibulum4 ,s4 annulata4 ,s4 cereolus4 ,s4 filograna4 ,s4 vermicella4 ,s4 filaria4 ,s4 pellucida4 ,s4 intorta4 ,s4 cristata4 ,s4 spirula4 ,s4 quadrangularis4 ,s4 minima4 ,s4 echinata4 ,s4 sulcata4 ,s4 costalis4 ,s4 dentifera4 ,s4 sipho4 ,s4 arenaria4 ,s4 vermicularis4 ,the wormlike ,serpula4 ,white1 cylindrical1 tapering1 rugged1 variously curved and twisted4 #c4 ,vermilia4 ,eight species4 ,tube testaceous1 cylindrical1 more or less twisted1 gradually attenuated posteriorly2 opening round1 the margin with one1 two1 or three teeth2 shell adhering by the side to other substances2 provided with a convex operculum4 ,vermilia rostrata4 ,v4 triquetra4 ,v4 bicarinata4 ,v4 eruca4 ,v4 subcrenata4 ,v4 plicifera4 ,v4 scabra4 ,v4 tniata4 ,v4 triquetra4 ,the three-sided ,vermilia4 ,white or reddish1 rugged1 twisted and triangular1 carinated along the back4 #d4 ,galeolaria4 ,two species4 ,distinguished from the ,vermilia by a very peculiar operculum4 ,found in groups1 adhering together at the base4 ,tube open at the summit2 aperture orbicular1 terminated on the side by a spatulous tongue2 operculum orbicular1 squamose1 consisting of from five to nine testaceous parts or valves1 all attached to one side of the operculum2 the middle one dentated at the truncated part of its summit1 the others a little toothed on their internal edge4 ,galeolaria cspitosa4 ,galeolaria elongata4 ,g4 elongata4 ,the elongated ,galeolaria4 ,whitish1 existing in congregated masses2 operculum as above4 #e4 ,magilus4 ,one species4 ,a very singular shell1 greatly resembling a petrified body1 composed of a testaceous white substance like alabaster4 ,the base is bent into a short spire1 with about four contiguous whorls2 the last prolonged and nearly straight4 ,the animal1 as it increases in size1 abandons the spiral part by increasing the tubular part1 filling up the part it quits with calcareous matter1 which proves that it advances gradually4 ,tube partially involuted1 convex in its upper exterior part1 the lower side flattened1 platted1 carinated1 and somewhat angular2 the spire short1 helix-formed1 and prolonged through the rest of its extent in nearly a right line2 aperture entire1 oval1 with a sort of sinus or gutter in the middle line1 producing the keel of the shell4 ,m4 antiquus4 ,the antiquated ,magilus4 ,answers to the above description2 colour pale yellowish brown1 transversely wrinkled4 ,,class ,,ii4 ,,cirrhipedes4 ,,has ,,but ,,one ,,family4 ,,cirrhipedes4 ,ten genera4 ,lamarck divided the ,lepas of ,linnus into the various genera which compose this family4 ,the term lepas is derived from the ,greek word 1 a rock1 alluding to its custom of adhering to rocks and marine bodies4 ,the shell often varies in shape1 covering1 and colouring2 it is generally conical1 but sometimes hemispherical2 some of the valves are placed perpendicularly on a base1 broad at the lower margin and tapering towards the summit1 which is closed by small horizontal valves forming the operculum4 ,the number of valves is indefinite1 from four to twenty-four2 but all are diversified with stri1 ridges1 and grooves4 ,the stri are mostly transverse1 and the ridges longitudinal4 ,the valves which compose the operculum or lid vary in shape1 and are in number two1 three1 four1 or more2 they are generally attached to a ligament4 ,they are seldom1 if ever1 found detached1 but adhere in groups to rocks1 shells1 anchors1 marine animals1 c4 ,those that fix themselves to ships are generally called barnacles2 they rapidly increase in size and number1 do great damage1 and greatly impede the progress of the vessel4 ,some of this family are affixed at the base of the shell to other substances1 and are therefore called sessile2 others are attached to a fleshy peduncle or stem1 and are said to be pedunculated4 ,the peduncle or stem1 proceeding from the base of the shell to the substance which sustains it1 is sometimes smooth1 fine in texture1 and tinged with bright red or orange2 sometimes it is of a dark or brownish colour1 with a texture much coarser and granulated4 #a4 ,tubicinella4 ,one species4 ,has the form of a cylindrical tube1 slightly curved1 and open at both ends2 one extremity closed by four trapezoidal valves attached to the inner margin1 the other end closed by a membrane4 ,the annular ribs which separate the compartments show its progressive growth4 ,found buried so deeply in the fat of marine animals1 particularly whales1 that only the operculum and the upper part of the tube are visible4 ,shell rather elevated1 sub-cylindrical1 the partitions rather small and indented2 the spaces or compartments almost quadrilateral2 the inferior much more narrow than the others2 the apertures equal and circular2 the membrane which closes the superior forming a tube between the four almost equal valves of the operculum4 ,t4 balnarum4 ,the ,whale ,tubicinella4 ,tubular1 with transverse ribs1 and a ring-shaped margin2 operculum bottle-shaped4 #b4 ,coronula4 ,three species4 ,found imbedded in the skin of whales and other marine animals1 though not generally at so great a depth as the ,tubicinella4 ,shell in form a little variable and without trace of support2 the coronary part formed of six pieces1 as in those properly called ,balanus1 but more regularly disposed in a manner to imitate a kind of crown or tube2 spaces alternately hollowed and saliant2 operculum not articulated1 composed of two pairs of small1 level1 delicate valves1 joined at the aperture of the tube by a considerable membranous part1 leaving a passage for the cirrhous appendages of the animal4 ,coronula testudinaria4 ,c4 balnarum4 ,c4 diadema4 ,c4 quinquevalvis4 ,c4 testudinaria4 ,the ,tortoise ,coronula4 ,very depressed1 circular1 as if radiated by the disposition of marked spaces1 striated transversely1 forming six rays diverging from the centre to the circumference2 aperture oval and hexagonal4 ,c4 balnarum4 ,the ,whale ,coronula4 ,a little more elevated2 the spaces prominent1 equal between them1 much larger than the excavated2 the aperture subcircular2 the operculum of four valves1 almost equal1 occupying but a small space of the membranous part which forms between them a sort of tube4 ,c4 diadema4 ,the ,crown ,coronula4 ,more elevated1 sub-hexagonal2 the spaces almost equal1 the hollow parts larger than the saliant2 the superior aperture very large and hexagonal2 the inferior much smaller1 of the same form1 and communicating in a round excavation by radiated plates2 the operculum bivalve4 ,c4 quinquevalvis4 ,the five-valved ,coronula4 ,pl4 #d1 fig4 #c4 ,species irregular1 having only five valves1 of a purple hue4 #c4 ,balanus4 ,the ,acorn ,shell4 ,twenty-eight species4 ,so named from its resemblance to an acorn4 ,shell conical2 the coronary part formed of six very distinct valves1 one dorsal1 one ventral1 and two pairs of laterals1 with or without a calcareous support2 operculum of four articulated pieces1 forming a sort of pyramid in the superior aperture of the tube4 ,balanus angulosus4 ,b4 sulcatus4 ,b4 tintinnabulum4 ,b4 nigrescens4 ,b4 cylindraceus4 ,b4 calycularis4 ,b4 roseus4 ,b4 palmatus4 ,b4 stalactiferus4 ,b4 plicatus4 ,b4 duploconus4 ,b4 patellaris4 ,b4 semiplicatus4 ,b4 galeatus4 ,b4 ovularis4 ,b4 miser4 ,b4 amphimorphus4 ,b4 perforatus4 ,b4 lvis4 ,b4 spinosus4 ,b4 radiatus4 ,b4 subimbricatus4 ,b4 rugosus4 ,b4 placianus4 ,b4 crispatus4 ,b4 punctatus4 ,b4 fistulosus4 ,b4 latus4 ,b4 sulcatus4 ,the furrowed ,balanus4 ,white2 valves nearly smooth2 operculum strongly ridged transversely1 with longitudinal1 nearly obsolete stri4 ,b4 tintinnabulum4 ,the little ,bell ,balanus4 ,pl4 #d1 fig4 #a4 ,shell conical2 valves strongly and irregularly ribbed2 interstices delicately striated transversely2 colour purple4 ,b4 spinosus4 ,the spiny ,balanus4 ,either has no support or a membranous one2 armed with spines exteriorly4 #d4 ,acasta4 ,three species4 ,found in sponge1 from which1 when detached1 it cannot stand erect on account of the convexity of the base4 ,shell oval1 sub-conic1 shaped like a ,patella1 with six lateral unequal valves slightly connected2 operculum with four valves4 ,acasta ,montagui4 ,a4 glans4 ,a4 sulcata4 ,a4 ,montagui4 ,montague's ,acasta4 ,valves erect1 triangular1 acute1 with muricated ascending spines4 #e4 ,creusia4 ,three species4 ,the shells of this genus are generally small2 found in the seas of hot countries attached to madrepore and other marine substances4 ,shell sessile1 thin1 ,patella-shaped2 aperture oval1 rather large1 closed by a large sub-pyramidal bivalve operculum2 a considerable calcareous support1 funnel-shaped1 penetrating the bodies to which the animal is attached4 ,creusia stromia4 ,c4 spinulosa4 ,c4 verruca4 ,c4 spinulosa4 ,the spiny ,creusia4 ,very depressed1 striated1 sometimes with marks of division into four pieces2 operculum bivalve4 ,c4 verruca4 ,the warted ,creusia4 ,pl4 #d1 fig4 #b4 ,whitish1 slightly depressed1 with interwoven obliquely striated valves2 the margin at the base irregularly serrated4 #f4 ,pyrgoma4 ,one species4 ,the principal difference between this genus and the ,creusia is in form4 ,shell sessile1 rather globular appearance on account of the valves being more closely united1 ventricose1 convex above1 apex perforated1 aperture small and elliptical2 operculum bivalve4 ,p4 cancellata4 ,the cancellated ,pyrgoma4 ,thick1 conical1 ,patella-shaped1 ribs radiating from the summit to the base2 aperture very small1 closed by an operculum of which the two pieces are long and narrow on each side2 pale violet colour4 #g4 ,anatifera4 ,five species4 ,the shells of this genus and the three following genera are affixed to marine bodies by a tough membranous peduncle1 varying in length4 ,shell flat1 with five valves imbricating more or less on the edges1 united by a thin membrane4 ,anatifera lvis4 ,a4 villosa4 ,a4 dentata4 ,a4 striata4 ,a4 vitrea4 ,a4 lvis4 ,the smooth ,anatifera4 ,pl4 #d1 fig4 #e4 ,five smooth valves2 the dorsal one rounded at the sides1 and slightly carinated2 peduncle long1 naked1 of a scarlet colour4 #h4 ,pollicipes4 ,three species4 ,easily distinguished by the numerous small valves situated at the base4 ,pollicipes cornucopia4 ,p4 mitella4 ,p4 scalpellum4 ,p4 cornucopia4 ,the ,cornucopia ,pollicipes4 ,pl4 #d1 fig4 #f4 ,peduncle covered with imbricated scales1 the lower ones rounded and turned upward4 ,p4 mitella4 ,the ,mitre ,pollicipes4 ,pl4 #d1 fig4 #d4 ,valves indefinite in number1 from six to twenty-four2 almost equal1 and open like tulips2 colour bluish1 purplish1 brownish1 or reddish cast4 #i4 ,cineras4 ,one species4 ,shell composed of five testaceous oblong valves1 separate1 not covering the whole of the body2 two at the sides of the aperture1 the others on the back2 peduncle of a greenish colour1 with six longitudinal stripes4 ,c4 vittata4 ,the filleted ,cineras4 ,answers to the above description4 #aj4 ,otion4 ,two species4 ,shell composed of two testaceous valves1 enclosed in a mantle or membranous bag1 which is prolonged and terminated in two fleshy tubes formed like ears1 one of the two having a lateral opening4 ,otion ,cuvierii4 ,otion ,blainvillii4 ,o4 ,cuvierii4 ,cuvier's ,otion4 ,answers to the above4 ,o4 ,blainvilli4 ,blainville's ,otion4 ,ash coloured2 the body and ears spotted with black4 ,,class ,,iii4 ,,conchifera4 ,,contains ,,twenty ,,families4 ,,family ,i4 ,,tubicola4 ,six genera4 #a4 ,aspergillum4 ,the ,watering-pot ,shell4 ,four species4 ,a well-known but rare shell2 the larger end closed by a convex disk1 with numerous small perforations1 and encircled by a dilated margin of elegant papyraceous tubes1 resembling a beautifully plaited ruff2 the smaller end open4 ,found in sandy places at low water4 ,shell oval1 slightly elongated1 striated longitudinally1 sub-equilateral2 adhering1 more or less confounded with the coats of a rather thick calcareous tube1 conic1 club-shaped1 open at its attenuated extremity1 and terminated at the other by a convex disk pierced by a great number of sub-tubular1 rounded holes1 and by a fissure in the centre4 ,aspergillum ,javanum4 ,a4 vaginiferum4 ,a4 ,nov ,zeylandi4 ,a4 agglutinans4 ,a4 ,javanum4 ,the ,java ,aspergillum4 ,pl4 #cc1 fig4 #c4 ,species smooth1 in which the circumference of the disk is bordered with a waved testaceous fringe4 ,a4 ,nov ,zeylandi4 ,the ,new-,zealand ,aspergillum4 ,species in which the circumference of the disk is without a fringe4 #b4 ,clavagella4 ,one species4 ,an irregular tube1 with branches or projecting tubes at the closed end2 within it is one free or moveable valve1 united by a ligament to another1 which is blended with the tube2 this distinguishes it from the ,aspergillum4 ,found in sand and coral4 ,shell oval1 very slightly elongated1 striated longitudinally1 slightly irregular2 equivalve1 inequilateral2 hinge a little variable2 ligament exterior2 two well-marked distant muscular impressions2 a calcareous sub-cylindrical tube1 more or less completely surrounding the shell1 and terminated before by a single orifice4 ,c4 aperta4 ,the open ,clavagella4 ,tube erect1 adhering2 aperture waved1 entire1 expanding1 funnel-shaped1 leaving the two valves open or uncovered in all their anterior part2 with an ovate face valve4 #c4 ,fistulana4 ,four species4 ,lamarck asserts that the tube and shell of this genus are quite distinct4 ,it so greatly resembles the ,teredo that it is with difficulty distinguished4 ,it is found in sand1 wood1 stone1 and sometimes shells4 ,shell annular or very short1 not sharp nor angular anteriorly1 but in other respects much like that of the ,teredo4 ,tube generally shorter1 thicker1 more solid1 more club-shaped than that of the ,teredo1 always closed at its anterior extremity in such a manner as to contain and entirely hide the shell2 the posterior extremity open1 and divided interiorly into two syphons by a partition4 ,fistulana clava4 ,f4 corniformis4 ,f4 gregata4 ,f4 lagenula4 ,f4 corniformis4 ,the horn-shaped ,fistulana4 ,answers to the above description4 ,f4 gregata4 ,the gregarious ,fistulana4 ,sheath or tube doubly club-shaped1 congregating2 shell angularly arcuated1 with double angulated serrated wings4 ,f4 ,clava4 ,the ,club ,fistulana4 ,pl4 #cc1 fig4 #e4 ,species with one end clavate1 the other incurved1 narrower1 obtuse1 and perforated in the middle2 shell generally flexuous1 of a brownish colour2 exterior rough1 interior smooth4 #d4 ,septaria4 ,one species4 ,the tube of this genus unquestionably contains a bivalve shell2 but1 as no perfect specimen has yet been found1 nothing decisive is known respecting it4 ,tube calcareous1 thick1 conically elongated1 more or less flexuous1 as if composed of pieces placed on the ends of each other1 or as if articulated1 with a ring or projection more or less marked at the place of the joints1 but without traces of partitions2 terminated on one side by an inflation1 oftentimes with some interior partitions1 and on the other by two tubes1 distinct and sub-articulated4 ,s4 arenaria4 ,the ,sand ,septaria4 ,the type of this genus4 #e4 ,teredina4 ,two fossil species4 ,a genus without a living species1 given here to preserve the family entire1 having a shell thick1 oval1 short1 very gaping posteriorly1 equivalve1 inequilateral2 summits well marked2 a spoonlike cavity in each valve4 ,tube or sheath testaceous1 cylindrical2 anterior end open2 posterior end closed1 but exhibiting the two valves of the shell4 #f4 ,teredo4 ,the ,ship ,worm4 ,three species4 ,this genus derived its name from the faculty it possesses of boring wood4 ,the ,t4 navalis can penetrate the stoutest oaken planks of a ship's sides by means of two valves affixed to the head of the animal4 ,the effects produced would be much more destructive but from the fact of their generally perforating the wood in the direction of the grain4 ,sir ,e4 ,home wrote a very scientific and interesting description of a species not mentioned by ,lamarck1 called the ,t4 gigantea1 found imbedded in indurated mud in the ,island of ,sumatra4 ,it is the largest species known1 some having been seen four or five feet long4 ,shell thick1 solid1 very short or annular1 open at both extremities2 equivalve1 equilateral1 angular and sharp anteriorly1 only slightly touching by the opposite edges2 hinge obsolete2 a considerable internal spoonlike cavity2 one slightly sensible muscular impression4 ,tube more or less distinct from the substance in which the animal lives1 cylindrical1 straight or flexuous1 closed with age at the oral extremity so as to envelop the animal and its shell2 always open at the other end1 and divided interiorly into two syphons by a middle partition4 ,teredo navalis4 ,t4 palmulata4 ,t4 gigantea4 ,t4 navalis4 ,the common ,ship ,worm4 ,species very thin1 cylindrical1 and smooth2 slightly twisted1 white1 finely striated longitudinally4 ,,family ,,ii4 ,,pholadaria4 ,two genera4 #a4 ,pholas4 ,the ,stone ,piercer4 ,nine species4 ,this genus is without any tubular sheath2 it derives its name from the ,greek word 1 to hide1 alluding to the custom of its inhabitant in forming cells in rocks1 wood1 c4 ,in form the ,pholas is generally oblong1 having two large valves opposite to each other1 with a number of smaller ones attached to the back as a substitute for a hinge4 ,the two large valves never shut close2 they are open at one end1 and sometimes at both4 ,the exterior of the shell is usually of a pure or dusky white1 but sometimes of a brownish cast4 ,in some species the shell is adorned with beautiful delicate reticulations1 like the finest lace2 in others the texture is coarser1 like small basket-work4 ,they are found in the ,american1 ,indian1 and ,european seas1 each shell in a separate habitation formed in limestone1 sandstone1 wood1 coral1 c42 often discovered completely imbedded in the oak planks of ships traversing those seas2 as they advance in growth they enlarge the space within1 and leave the aperture by which they entered of its primitive size4 ,shell thin1 sub-transparent1 finely striated1 elongated oval1 bivalve1 equivalve1 inequilateral2 the valves only touching in the middle of their edges2 the summits but little marked1 and concealed by a callosity produced by the expansion of the dorsal lobes of the mantle2 near the hinge are often developed one or more accessory calcareous pieces2 an incurved tooth interior beneath the hinge4 ,pholas dactylus4 ,p4 orientalis4 ,p4 candida4 ,p4 dactyloides4 ,p4 silicula4 ,p4 costata4 ,p4 crispata4 ,p4 callosa4 ,p4 clavata4 ,p4 dactylus4 ,the prickly ,pholas4 ,pl4 #c1 fig4 #c4 ,answers to the general description1 but is beset with small calcareous spiny nodules on the ribs1 which run widening and enlarging from the summit to the margin2 colour white or very light brown4 ,p4 striata4 ,the striated ,pholas4 ,pl4 #c1 fig4 #e4 ,oval1 the dorsal callosity leaving the summit free1 and extending towards the anterior and inferior extremity in such a manner that each valve seems to be formed of three parts1 because of an oblique furrow from the summit to the margin2 a tooth running down in the inside from the summit2 one pair of accessory pieces at the posterior extremity of the shell4 ,p4 candida4 ,the white ,pholas4 ,pl4 #c1 fig4 #b4 ,elongated1 wedge-shaped2 muscular impression almost medial2 a kind of oblique tooth parting from the summit2 no accessory pieces4 ,p4 costata4 ,the ribbed ,pholas4 ,pl4 #c1 fig4 #d4 ,elongated1 wedge-shaped1 covered with regular elevated jagged or scalloped ribs1 elegantly disposed2 three dorsal accessory pieces2 muscular impression almost medial4 ,p4 crispata4 ,the curled ,pholas4 ,somewhat oval1 truncated behind1 and as if divided into two parts by an oblique furrow from the summit to the base2 anterior part reticulated1 the other parts plain2 muscular impression marginal4 ,p4 clavata4 ,the clubbed ,pholas4 ,short1 wedge-form1 little gaping1 with many accessory pieces4 #b4 ,gastrochna4 ,three species4 ,always without accessory pieces1 and1 therefore1 easily distinguished from the ,pholas4 ,shell equivalve1 somewhat wedge-shaped1 with a very large1 oval1 oblique1 anterior opening between the valves2 the posterior extremity nearly close2 hinge linear1 marginal1 without teeth2 two distant muscular impressions2 sometimes with a kind of tube or calcareous general envelope4 ,gastrochna cuneiformis4 ,g4 mytiloides4 ,g4 modiolina4 ,g4 modiolina4 ,the ,modioliform ,gastrochna4 ,oval1 thin1 brittle1 gaping at the side2 light reddish brown1 with a bluish white interior4 ,g4 cuneiformis4 ,the wedgelike ,gastrochna4 ,pl4 #c1 fig4 #a4 ,species with a smooth shell1 and without distinct tube4 7,represented as imbedded in wood47 ,,family ,,iii4 ,,solenides4 ,four genera4 #a4 ,solen4 ,eighteen species4 ,there are many species belonging to this genus differing considerably in form and appearance4 ,its name is derived from a ,greek word signifying a pipe or tube4 ,it is a bivalve whose breadth sometimes exceeds its length2 some species have a resemblance to the sheath of a razor or a knife handle2 others are curved like the scabbard of a cimeter4 ,the ,solen is found in the sand of the seashore1 which it sometimes penetrates to the depth of one or two feet4 ,most of the species are covered with an epidermis1 which renders their colours more or less obscure4 ,in general they present but little beauty1 though some are of a bright pink colour1 and some are beautifully and delicately radiated with purple and white4 ,the principal characteristic of this genus is the hinge1 which generally has one subulate tooth1 though sometimes two or three4 ,shell equivalve1 extremely inequilateral1 transversely elongated1 open at both ends2 the apices very small1 and entirely at the commencement of the dorsal line2 one or two teeth in the hinge2 ligament external2 two distant muscular impressions2 the anterior one very long and narrow1 the posterior one sub-angular4 ,solen vagina ,s4 corneus4 ,s4 ensis4 ,s4 pygmus4 ,s4 ambiguus4 ,s4 ,dombeii4 ,s4 ,javanicus4 ,s4 ,caribus4 ,s4 antiquatus4 ,s4 vaginoides4 ,s4 siliqua4 ,s4 cultellus4 ,s4 planus4 ,s4 minutus4 ,s4 constrictus4 ,s4 coarctatus4 ,s4 rostratus4 ,s4 violaceus4 ,s4 vagina4 ,the ,razor ,sheath4 ,pl4 #ca1 fig4 #e4 ,valves equal1 truncated at both ends2 straight or slightly curved2 summit terminal4 ,s4 cultellus4 ,the kidney-shaped ,solen4 ,species a little curved lengthwise2 summit not terminal4 ,s4 rostratus4 ,the violet-beaked ,solen4 ,species with longer and narrower valves1 flatter at the extremities2 callosity at the hinge very visible2 cardinal teeth or hinge nearer the middle than the anterior side4 ,s4 ensis4 ,the ,sabre ,solen4 ,species linear1 sabre-shaped2 a single compressed tooth in each valve2 olive brown at the base1 and of a purple hue near the apex4 ,s4 siliqua4 ,the podlike ,solen4 ,species linear1 straight2 two teeth in one valve and one in the other2 covered with a glossy brown epidermis2 striated transversely4 ,s4 antiquatus4 ,the ,antiquated ,solen4 ,species thin1 white1 and almost transparent2 striated concentrically2 ends rounded2 hinge near the centre2 a tooth in one valve locking into two in the other2 the teeth erect and projecting beyond the margin2 covered with a dark-coloured epidermis4 #b4 ,panopa4 ,one species4 ,distinguished from the ,mya by the prominency of the apex and the situation of the ligament4 ,shell regular1 elongated oval1 gaping at the two extremities1 equivalve1 inequilateral2 summit but little marked1 and anterodorsal2 hinge very complete1 similar1 formed by a conical primary tooth before a short1 compressed1 ascending callosity2 ligament exterior1 attached to the callosity2 two muscular impressions4 ,p4 ,aldrovandi4 ,the ,panopa of ,aldrovandus4 ,pl4 #e1 fig4 #b4 ,the type of this genus1 transversely elongated1 undulated2 concentrically wrinkled2 of dark green colour1 almost black4 #c4 ,solecurtus4 ,three species4 ,shell oval1 elongated1 equivalve1 sub-equilateral1 edges almost straight and parallel2 the extremities equally rounded1 and as if truncated2 summits but little marked2 hinge toothless1 or formed by some rudimentary primary teeth2 ligament projecting1 affixed to the thick nymphal callosities2 two distant1 rounded muscular impressions4 ,solecurtus radiatus4 ,s4 strigilatus4 ,s4 legumen4 ,s4 radiatus4 ,the radiated ,solecurtus4 ,species flat1 small1 with an interior ridge running down obliquely from the summit to the abdominal margin4 ,s4 strigilatus4 ,the strigilated ,solecurtus4 ,species more cylindrical1 without interior ridge4 ,s4 legumen4 ,the ,pease-pod ,solecurtus4 ,pl4 #ca1 fig4 #f4 ,species still more elongated and sub-cylindrical4 #d4 ,glycimeris4 ,two species4 ,distinguished from the ,solen by being without teeth at the hinge4 ,shell covered with epidermis1 slightly irregular1 elongated1 gaping at the two extremities1 equivalve1 inequilateral2 the summits but little marked2 hinge toothless2 a longitudinal callosity2 ligament exterior1 affixed to very projecting callosities on the shortest side of the shell2 two distinct muscular impressions4 ,glycimeris margaritacea4 ,glycimeris siliqua4 ,g4 siliqua4 ,the podlike ,glycimeris4 ,transversely oblong1 covered with a black epidermis2 umbones decorticated2 internal disc of the valves white1 thick1 and callous4 ,,family ,,iv4 ,,myaria4 ,two genera4 #a4 ,mya4 ,the ,trough ,shell1 or ,gaper4 ,four species4 ,this term is derived from the ,greek word 1 to close1 alluding to the animal's custom of closing the valves4 ,the principal characteristic of the ,mya is its gaping at one end2 it is likewise distinguished by having a large spoonlike tooth proceeding from beneath the beak4 ,its form is greatly varied1 but generally covered with a greenish epidermis1 which may be removed2 and the shell1 when polished1 will display beautiful prismatic colours4 ,the ,mya is found on the seashore or on the banks of large rivers1 partially concealed in the sand and mud4 ,shell transverse1 inequilateral1 surrounded with a thick epidermis2 rather solid2 edges thin and sharp2 summits but little marked2 hinge dissimilar2 one or two large1 compressed1 spoon-shaped teeth rising perpendicularly from the plane of the left valve1 and fitting into the entrance of a primary cavity in the right valve2 ligament interior1 attaching the tooth and cavity2 two distant muscular impressions2 the anterior long and narrow1 the posterior rounded2 the mantle impression narrow1 with a large sinus or hollow4 ,mya truncata4 ,m4 arenaria4 ,m4 erodona4 ,m4 solenimyalis4 ,m4 arenaria4 ,the ,sand ,mya4 ,pl4 #e1 fig4 #a4 ,regular species4 ,m4 erodona4 ,the ,erodona ,mya4 ,irregular species1 in which the cavity of the right valve is bordered by strong projections4 ,m4 truncata4 ,the truncated ,mya4 ,pl4 #e1 fig4 #c4 ,sub-oval1 truncated2 small end gaping2 large end rounded2 covered with a dark yellowish epidermis2 inside white2 wrinkled transversely4 #b4 ,anatina4 ,the ,duck's ,bill4 ,ten species4 ,shell elongated oval1 very thin1 fragile1 semipellucid2 much inflated at one end like a duck's bill1 whence it derives its common name2 equivalve1 very inequilateral2 hinge toothless2 the anterior side rounded and much longer than the posterior2 ligament interior affixed to a bony spoonlike process in each valve1 and sustained by a lateral plate running obliquely into the interior of the shell4 ,anatina laterna4 ,a4 truncata4 ,a4 subrostrata4 ,a4 longirostris4 ,a4 globulosa4 ,a4 trapezoides4 ,a4 rugosa4 ,a4 imperfecta4 ,a4 myalis4 ,a4 rupicola4 ,a4 subrostrata4 ,the beaklike ,anatina4 ,species equivalve and regular4 ,a4 myalis4 ,the ,mya-like ,anatina4 ,species inequivalve4 ,a4 trapezoides4 ,the trapezium-shaped ,anatina4 ,pl4 #ab1 fig4 #e4 ,species with a moveable tooth or calcareous piece upon the right valve1 lodged in the angle formed by the spoonlike process4 ,,family ,v4 ,,mactracea4 ,seven genera4 #a4 ,lutraria4 ,eleven species4 ,this genus was taken from the ,mactra1 and is perfectly distinct1 as it wants the lateral teeth4 ,it is called ,lutricola by ,de ,blainville1 from its lurking in sand or mud at the mouths of large rivers4 ,shell inequilateral1 orbicular1 sub-triangular or transversely oval1 gaping at the extremities2 hinge with one cardinal tooth folded in two1 or two teeth1 one of which is plain1 with an opposite hollow to receive it2 no lateral teeth2 ligament interior and fixed in the hollow cavity of the primary tooth4 ,lutraria solenoides4 ,l4 rugosa4 ,l4 compressa4 ,l4 piperata4 ,l4 tellinoides4 ,l4 elliptica4 ,l4 papyracea4 ,l4 plicatella4 ,l4 crassiplica4 ,l4 complanata4 ,l4 candida4 ,l4 solenoides4 ,the ,solen-like ,lutraria4 ,species oblong1 sub-cylindrical1 very gaping1 two very strong cardinal teeth2 the spoonlike cavity of the ligament vertical4 ,l4 compressa4 ,the compressed ,lutraria4 ,species oval or orbicular1 almost equilateral1 very compressed1 little gaping2 hinge similar2 internal ligament inserted in the pit of a vertical spoonlike cavity2 two distinct tubes1 without longitudinal stri4 ,l4 rugosa4 ,the rugged ,lutraria4 ,species ovate1 closed at both ends2 stri from the summit to the base4 ,l4 elliptica4 ,the oval ,lutraria4 ,oblong oval1 nearly smooth1 having a few concentric stri1 and some diagonal stri at the ends of the valves2 colour yellow or greenish brown2 inside white4 #b4 ,mactra4 ,the ,kneading-trough4 ,thirty-three species4 ,the name given to this genus was derived from the ,greek word 1 from its resemblance to a trough used for kneading bread4 ,in all species of this genus a similarity of colouring and form pervades the whole4 ,in shape they are sub-triangular or oblong1 with a smooth1 striated1 or transversely-ribbed exterior4 ,in some species the valves gape at both ends1 and in others at the anterior only4 ,the most general colour is lilac1 or white tinged with blue or yellow2 some have purple rays on a brown ground4 ,a singularity in the form of the hinge of the ,mactra distinguishes it from all other genera4 ,it is of a triangular form1 has a bent or angular compressed tooth on each valve1 with a small oblique cavity on each side to which the ligament is attached4 ,there are also two lateral teeth1 one near the ligament and the other near the primary tooth4 ,these teeth are thin and fragile2 the primary tooth is sometimes indistinct1 but the lateral teeth always exist4 ,the ,mactra is found buried in the sand at a little distance from the seashore4 ,shell generally thin and brittle1 covered with epidermis1 of a triangular form1 transverse1 equivalve1 inequilateral2 beaks prominent2 one compressed1 folded1 cardinal tooth1 with an adjoining pit in each valve1 projecting inward2 lateral teeth thin1 lamellous1 entering1 placed near the hinge2 exterior ligament small2 an interior ligament inserted in the cardinal pits2 two muscular impressions1 united by a narrow marginal tongue4 ,mactra gigantea4 ,m4 ,spengleri4 ,m4 striatella4 ,m4 carinata4 ,m4 straminea4 ,m4 ,australis4 ,m4 violacea4 ,m4 fasciata4 ,m4 turgida4 ,m4 plicataria4 ,m4 rufescens4 ,m4 maculata4 ,m4 subplicata4 ,m4 triangularis4 ,m4 lactea4 ,m4 abbreviata4 ,m4 ,helvacea4 ,m4 grandis4 ,m4 stultorum4 ,m4 maculosa4 ,m4 ovalina4 ,m4 alba4 ,m4 solida4 ,m4 castanea4 ,m4 rufa4 ,m4 squalida4 ,m4 ,brasiliana4 ,m4 donacina4 ,m4 depressa4 ,m4 lilacea4 ,m4 trigonella4 ,m4 deltoides4 ,m4 crassatella4 ,m4 gigantea4 ,the gigantic ,mactra4 ,species in which the cardinal teeth are almost obsolete1 in consequence of the enlargement of the pit of the ligament4 ,m4 stultorum4 ,the fool's ,mactra4 ,pl4 #i1 fig4 #f4 ,species in which all the teeth are very large1 lamellous1 striated longitudinally2 colour reddish brown4 ,m4 solida4 ,the solid ,mactra4 ,species thick1 solid1 without epidermis2 lateral teeth finely striated4 ,m4 trigonella4 ,the three-cornered ,mactra4 ,species in which the lateral teeth are almost obsolete2 exterior surface smooth4 ,m4 triangularis4 ,the triangular ,mactra4 ,species very small1 strong1 opaque1 white2 inside white2 margin strongly crenated4 ,m4 crassa4 ,the thick ,mactra4 ,species very thick1 solid1 striated longitudinally2 the cardinal teeth obsolete1 or almost so2 the lateral very thick1 very close1 and reflected2 an external ligament as well as an internal one4 #c4 ,crassatella4 ,eleven species4 ,may be easily known from the ,mactra and ,lutraria1 as the valves1 when closed1 fit exactly1 and do not gape4 ,it is remarkable that all the living species contained in this genus only exist in the seas of ,australasia1 while at least seven species in a fossil state are found in ,france4 ,shell inequilateral1 sub-orbicular1 close1 equivalve1 sometimes attenuated at one end2 two divergent primary teeth1 with a cavity at the side2 lateral teeth obsolete2 ligament internal1 inserted in the cavity of the hinge4 ,crassatella ,kingicola4 ,c4 donacina4 ,c4 sulcata4 ,c4 subradiata4 ,c4 contraria4 ,c4 cuneata4 ,c4 rostrata4 ,c4 glabrata4 ,c4 erycina4 ,c4 cycladea4 ,c4 striata4 ,c4 sulcata4 ,the furrowed ,crassatella4 ,pl4 #f1 fig #d4 ,shell ordinarily thick1 striated transversely1 denticulated1 sub-triangular1 equivalve1 inequilateral1 summits well marked and evidently turned forward2 hinge very large1 subsimilar1 formed by two diverging cardinal teeth1 separated by a large pit2 ligament almost entirely interior1 and inserted in the pit4 ,c4 ,kingicola4 ,the ,king's ,island ,crassatella4 ,ovate1 orbicular2 yellowish white1 with obsolete rays2 very minutely striated transversely2 the umbones somewhat plicated4 #d4 ,erycina4 ,one species4 ,the only living species of this genus is found on the sand in ,new-,holland1 but there are many fossils in ,france4 ,it is so equivocal in character that it is difficult to judge of their hinge4 ,e4 cardioides4 ,the cardium-shaped ,erycina4 ,pl4 #f1 fig4 #e4 ,shell rather longer than high1 sub-triangular1 regular1 equivalve1 inequilateral1 rarely gaping2 the summits well marked and a little anteriorly inclined2 hinge subsimilar2 two unequal cardinal teeth1 converging at the summit1 and leaving a pit between them2 two lateral teeth1 not distant1 lamellous1 inserted2 ligament interior1 fixed in the cavity between the primary teeth4 #e4 ,ungulina4 ,two species4 ,this genus is very remarkable for having the pit or cavity divided into two parts1 the one at the end of the other2 the ligament is partially seen from the outside4 ,ungulina oblonga4 ,ungulina transversa4 ,u4 transversa4 ,the transverse ,ungulina4 ,shell vertical or longitudinal1 rather irregular1 not gaping1 equivalve1 inequilateral1 with summits little marked and decorticated2 hinge dorsal1 formed by one short1 primary cleft tooth1 before an oblong pit1 divided by a small ligament1 in which is inserted a sub-interior ligament2 colour yellowish brown4 #f4 ,solenimya4 ,two species4 ,this genus1 which at first sight is confounded with the ,solens1 differs from them particularly by the singular disposition of the ligament placed at the short side of the shell4 ,solenimya ,australis4 ,solenimya ,mediterranea4 ,s4 ,australis4 ,the ,australian ,solenimya4 ,pl4 #f1 fig4 #b4 ,shell covered with a thick brownish epidermis1 regular1 thick1 elongated oval1 edges straight and parallel1 equally rounded at both extremities2 valves equal1 very inequilateral4 ,s4 ,mediterranea4 ,the ,mediterranean ,solenimya4 ,transversely oblong2 dark brown1 ribbed longitudinally1 with imbricated projecting foliations2 inside white4 #g4 ,amphidesma4 ,sixteen species4 ,this genus was constituted by ,lamarck on account of the peculiar characters which distinguished it from those genera which it most resembles2 particularly in having the valves connected by two ligaments4 ,shell generally small1 transverse1 sub-oval or rounded1 occasionally a little gaping at the sides2 hinge with one or two cardinal teeth1 and a narrow cavity for the interior ligament2 exterior ligament short4 ,amphidesma variegata4 ,a4 donacilla4 ,a4 lactea4 ,a4 cornea4 ,a4 albella4 ,a4 flexuosa4 ,a4 prismatica4 ,a4 phaseolina4 ,a4 corbuloides4 ,a4 glabrella4 ,a4 lucinalis4 ,a4 ,boysii4 ,a4 tenuis4 ,a4 purpurascens4 ,a4 nucleola4 ,a4 physioides4 ,a4 glabrella4 ,the smooth ,amphidesma4 ,pl4 #f1 fig4 #i4 ,species lenticular or oval1 with or without a lunated depression4 ,a4 lactea4 ,the milky ,amphidesma4 ,sub-orbicular1 sub-pellucid1 compressed1 reticulated2 yellowish white4 ,,family ,,vi4 ,,corbulacea4 ,two genera4 #a4 ,corbula4 ,nine species4 ,this genus approximates the ,crassatella and ,ungulina1 but is distinguished from them by the inequality of the valves and the strong primary tooth4 ,shell rather solid1 a little irregular and triangular1 inequivalve1 more or less inequilateral1 rounded and enlarged before1 attenuated and prolonged behind2 summits well marked1 one projecting behind the other2 hinge anomalous1 formed by a large1 conical1 recurved cardinal tooth1 with a cavity at its base for the reception of the tooth of the other valve2 ligament very small2 two muscular impressions little distant4 ,corbula ,australis4 ,c4 sulcata4 ,c4 erythrodon4 ,c4 ovalina4 ,c4 ,taitensis4 ,c4 nucleus4 ,c4 impressa4 ,c4 porcina4 ,c4 semen4 ,c4 nucleus4 ,the kernel ,corbula4 ,strong1 sub-triangular1 under valve larger than the upper one2 transversely striated2 covered with a thick brownish epidermis4 ,c4 ovalina4 ,the ovate ,corbula4 ,pl4 #f1 fig4 #f4 ,regular species4 ,c4 ,australis4 ,the ,australian ,corbula4 ,irregular species1 living in stone4 #b4 ,pandora4 ,two species4 ,closely allied to the ,corbula4 ,pandora rostrata4 ,pandora obtusa4 ,p4 rostrata4 ,the beaked ,pandora4 ,pl4 #f1 fig4 #c4 ,shell white1 regular1 elongated1 inequivalve1 inequilateral2 right or upper valve entirely flat1 with a plait or fold2 much produced towards the beak2 hinge anomalous1 formed by a transverse cardinal tooth on the right valve1 entering into a corresponding cavity on the left2 ligament internal1 oblique1 triangular1 inserted in a pit rather deep1 with edges a little projecting on each valve2 two rounded muscular impressions4 ,,family ,,vii4 ,,lithophagi4 ,three genera4 #a4 ,saxicava4 ,five species4 ,this genus is taken from the ,mytilus1 and1 like the ,pholas1 possesses the faculty of penetrating calcareous rocks1 from which it cannot be extracted without breaking the substance in which it is imbedded4 ,shell bivalve1 thick1 covered with epidermis1 rather irregular1 elongated1 sub-cylindrical1 obtuse at the two extremities2 summits little marked2 hinge toothless1 or with a very small rudimentary tooth2 ligament external1 a little inflated4 ,saxicava rugosa4 ,s4 ,gallicana4 ,s4 pholadis4 ,s4 ,australis4 ,s4 veneriformis4 ,s4 ,australis4 ,the ,australian ,saxicava4 ,pl4 #g1 fig4 #f4 ,answers to the above description4 ,s4 ,gallicana4 ,the ,gallic ,saxicava4 ,oblong1 wrinkled1 truncated at the posterior extremity1 one valve larger than the other2 pale horn colour4 #b4 ,petricola4 ,thirteen species4 ,this genus possesses the same faculty of boring rocks as the ,saxicava2 it is distinguished from the latter genus by the hinge having one or two teeth in each valve4 ,shell sub-trigonal1 transverse1 inequilateral2 upper side narrowed and a little gaping2 lower side rounded4 ,petricola lamellosa4 ,p4 ochroleuca4 ,p4 semilamellata4 ,p4 lucinalis ,p4 striata4 ,p4 costellata4 ,p4 rocelaria4 ,p4 exilis4 ,p4 ruperella4 ,p4 chamoides4 ,p4 pholadiformis4 ,p4 labagella4 ,p4 linguatula4 ,p4 lamellosa4 ,the lamellous ,petricola4 ,pl4 #g1 fig4 #c4 ,species oval1 trigonal1 radiated2 two teeth on one valve1 and one on the other4 ,p4 pholadiformis4 ,the ,pholas-shaped ,petricola4 ,species transversely elongated4 #c4 ,venerirupis4 ,seven species4 ,another lithophagous shell1 taken from the genus ,venus1 from which it is distinguished by the different disposition of the teeth1 having three primary in one of the valves at least4 ,shell more or less irregular1 sub-trigonal1 striated or radiated1 equivalve1 inequilateral1 the anterior side shorter and rounded1 the posterior sub-truncated2 summits well marked2 hinge sub-regular1 more or less dissimilar1 formed by slender1 narrow1 cardinal teeth1 variable in number on each valve1 sometimes two on the right and three on the left1 and sometimes three on both2 these teeth are small1 contiguous1 parallel1 and but little1 if at all1 divergent exterior2 very weak4 ,venerirupis perforans4 ,v4 nucleus4 ,v4 irus4 ,v4 exotica4 ,v4 distans4 ,v4 crenata4 ,v4 carditoides4 ,v4 perforans4 ,the perforating ,venerirupis4 ,sub-rhombic1 transversely striated1 wrinkled on the anterior side2 exterior brown1 interior white1 sometimes tinged with purple4 ,v4 irus4 ,the foliated ,venerirupis4 ,pl4 #g1 fig4 #b4 ,species longitudinally striated2 cardinal teeth two1 sometimes three on the right and three on the left4 ,,family ,,viii4 ,,nymphacea4 ,ten genera4 ,this family is divided into ,n4 ,solenaria and ,n4 ,tellinaria1 from their resemblance to the ,solen and the ,tellina4 ,n4 ,,solenaria4 ,three genera4 #a4 ,sanguinolaria4 ,four species4 ,this genus may be distinguished from the ,solen by never having the transverse oblong shape1 or the edge of the valves parallel to the base4 ,sanguinolaria occidens4 ,s4 rosea4 ,s4 livida4 ,s4 rugosa4 ,s4 rosea4 ,the rosy ,sanguinolaria4 ,semi-orbicular1 smooth1 shining and convex2 near the umbones of a beautiful rose colour1 which becomes paler as it descends2 acute transverse stri4 ,s4 occidens4 ,the setting-sun ,sanguinolaria4 ,pl4 #g1 fig4 #d4 ,oval1 a little elongated1 very compressed1 slightly gaping1 valves elliptical1 equally rounded at the two extremities1 without mark of posterior keel2 summits slightly indicated2 hinge formed by one or two contiguous cardinal teeth on each valve2 ligament projecting1 convex2 margins not parallel4 #b4 ,psammobia4 ,eighteen species4 ,taken from the ,tellina1 which it much resembles in form1 but from which it differs by not having the irregular plait on the anterior part4 ,shell ovate1 transverse1 slightly gaping2 summits projecting2 hinge formed by two teeth on one valve1 and only one inserted on the other4 ,psammobia virgata4 ,p4 ,ferroensis4 ,p4 vespertina4 ,p4 florida4 ,p4 muculosa4 ,p4 crulescens4 ,p4 elongata4 ,p4 flavicans4 ,p4 squamosa4 ,p4 alba4 ,p4 ,cayennensis4 ,p4 lvigata4 ,p4 tellinella4 ,p4 pulchella4 ,p4 aurantia4 ,p4 fragilis4 ,p4 livida4 ,p4 ,galathea4 ,p4 virgata4 ,the striped ,psammobia4 ,pl4 #g1 fig4 #a4 ,species rather gaping1 striated longitudinally1 the teeth of the hinge considerably effaced4 ,p4 ,ferroensis4 ,the ,ferro ,psammobia4 ,oblong oval2 white1 radiated with crimson2 finely striated transversely2 valves obliquely truncated4 #c4 ,psammota4 ,seven species4 ,of the same form as the ,psammobia1 but differing in the number of teeth1 as the left valve of the ,psammota has only one tooth2 sometimes one valve is toothless1 while the other has two teeth4 ,shell transverse oval or oblong2 gaping a little at the sides2 one primary tooth on each valve1 though sometimes on only one of them2 ligament exterior1 attached to callosities at the hinge1 and without an irregular plait4 ,psammota violacea4 ,p4 zonalis4 ,p4 pellucida4 ,p4 serotina4 ,p4 candida4 ,p4 ,tarentina4 ,p4 donacina4 ,p4 violacea4 ,the violet ,psammota4 ,pl4 #g1 fig4 #e4 ,transversely ovate-oblong1 sub-ventricose2 transversely striated2 purple radiations4 ,,tellinaria4 ,seven genera4 ,the first five of these genera have one or two lateral teeth1 the remaining two have none4 #d4 ,tellina4 ,the ,tellen4 ,fifty-four species4 ,this genus differs but little from the ,donax2 its species are numerous1 especially in the seas of hot countries2 they are found sunk deep in the sand4 ,there are but few genera that can vie with the ,tellina in beauty1 variety1 or number2 some are smooth and polished1 some are remarkable for their beautiful radiations1 and others are covered with minute stri and undulations2 occasionally the whole surface is covered with imbrications or scales4 ,they are produced abundantly in almost every sea and in many rivers1 but the finest species are found in the pearl-fisheries of ,ceylon4 ,the usual form of the ,tellina is broad at one end and gradually tapering towards the other4 ,it derives its name from the ,greek word 1 to bring to a termination4 ,shell of variable form1 generally striated longitudinally and very compressed2 equivalve1 more or less inequilateral2 anterior side longer and more rounded than the posterior2 offers a flexuous plait or twist at the inferior margin2 summits little marked2 hinge similar2 one or two cardinal teeth2 two distant lateral teeth1 with a pit at their base in each valve2 ligament external4 ,tellina radiata4 ,t4 unimaculata4 ,t4 semizonalis4 ,t4 maculosa4 ,t4 virgata4 ,t4 staurella4 ,t4 crucigera4 ,t4 ,spengleri4 ,t4 rostrata4 ,t4 lutirostra4 ,t4 elliptica4 ,t4 albinella4 ,t4 margaritina4 ,t4 strigosa4 ,t4 planata4 ,t4 punicea4 ,t4 depressa4 ,t4 pulchella4 ,t4 fabula4 ,t4 tenuis4 ,t4 sulphurea4 ,t4 foliacea4 ,t4 operculata4 ,t4 rosea4 ,t4 chloroleuca4 ,t4 remies4 ,t4 sulcata4 ,t4 crassa4 ,t4 lvigata4 ,t4 linguafelis4 ,t4 rugosa4 ,t4 lacunosa4 ,t4 gargadia4 ,t4 pristis4 ,t4 multangula4 ,t4 polygona4 ,t4 capsoides4 ,t4 exilis4 ,t4 donacina4 ,t4 nitida4 ,t4 scalaris4 ,t4 psammotella4 ,t4 striatula4 ,t4 scobinata4 ,t4 decussata4 ,t4 ,brasiliana4 ,t4 obliqua4 ,t4 umbonella4 ,t4 deltoidalis4 ,t4 nymphalis4 ,t4 solidula4 ,t4 bimaculata4 ,t4 sexradiata4 ,t4 ostracea4 ,t4 radiata4 ,the radiated ,tellen4 ,pl4 #h1 fig4 #e4 ,shell elongated2 posterior side shorter and more narrow than the anterior4 ,t4 foliacea4 ,the foliaceous ,tellen4 ,species transversely oblong2 upon the edge of the front side of either valve are rows of serrated teeth1 running from the apex to the margin4 ,t4 bimaculata4 ,the double-spotted ,tellen4 ,species orbicular1 easily known by answering to its common name4 ,t4 fabula4 ,the false ,tellen4 ,shell very thin1 pellucid1 and oval2 yellowish colour1 darker towards the umbo1 which is nearly central1 pointed and turned a little to one side2 anterior side slopes to an obtuse point2 posterior side large and rounded2 hinge with three teeth in one valve and two in the other4 ,t4 scobinata4 ,the rasp ,tellen4 ,species oval or sub-orbicular1 sub-equilateral4 ,t4 donacina4 ,the ,donax-like ,tellen4 ,pl4 #i1 fig4 #e4 ,sub-oval1 flattish1 semi-striated and semipellucid2 hinge with two teeth in one valve and one in the other2 pale yellow1 radiated longitudinally with pink4 ,t4 depressa4 ,the depressed ,tellen4 ,oval1 flat1 pointed at the smaller end and slightly reflected2 pale yellowish colour1 faintly striated concentrically2 covered with a pale brown epidermis4 #e4 ,tellinides4 ,one species4 ,though this genus bears a great affinity to many others1 it cannot be united with any2 having lateral teeth1 it differs from the ,psammobia2 by not having the valves twisted1 it differs from the ,tellina2 the valves closing1 and having muscular impressions in the interior1 render it distinct from the ,lucina4 ,shell equilateral1 rather elongated1 almost without the flexuous plait2 two cardinal teeth diverging1 and two remote lateral teeth1 of which the anterior is but little distant from the summit4 ,t4 ,timorensis4 ,the ,tellinides of ,timor4 ,pl4 #h1 fig4 #c4 ,the only type and species of this genus4 #f4 ,corbis4 ,one species4 ,this genus was at first classed by ,lamarck with the ,lucina2 but ,cuvier1 having discovered that the organization of the animals differed1 made this a distinct genus1 which was adopted by ,lamarck4 ,shell transverse1 equivalve1 no flexuosity2 apices curved inward1 opposed to each other2 two primary and two lateral teeth1 the posterior one nearest to the hinge2 muscular impression simple1 valves sometimes convex1 strongly ribbed transversely1 striated longitudinally1 margins serrated and closely interlocking4 ,c4 fimbriata4 ,the fringed ,corbis4 ,pl4 #h1 fig4 #a4 ,species white1 rather thick1 oval1 a little elongated1 almost equilateral2 the cardinal and the lateral teeth well marked2 the muscular impression anterior1 rounded4 #g4 ,lucina4 ,twenty species4 ,in the hinge and lateral teeth it much resembles the ,tellina1 but differs from it in never being flexuous4 ,this genus is more easily characterized by the orbicular1 compressed1 general form of the shell1 than by the dental system1 which is sometimes entirely effaced4 ,shell compressed1 regular1 orbicular1 sub-equilateral2 summits small and pointed1 inclined anteriorly2 hinge similar1 but variable2 two divergent cardinal teeth1 little marked1 and sometimes entirely effaced2 two remote lateral teeth1 with a pit at the base1 sometimes obsolete2 posterior ligament more or less sunk2 two widely-separated muscular impressions1 of which the anterior is narrow and long4 ,lucina ,jamaicensis4 ,l4 ,pennsylvanica4 ,l4 edentula4 ,l4 mutabilis4 ,l4 radula4 ,l4 squamosa4 ,l4 lactea4 ,l4 undata4 ,l4 circinaria4 ,l4 columbella4 ,l4 concentrica4 ,l4 divaricata4 ,l4 carnaria4 ,l4 scabra4 ,l4 reticulata4 ,l4 sinuata4 ,l4 pecten4 ,l4 lutea4 ,l4 digitalis4 ,l4 globularis4 ,l4 ,jamaicensis4 ,the ,jamaica ,lucina4 ,pl4 #h1 fig4 #h4 ,species lenticular1 striated concentrically2 the teeth of the hinge variable1 and sometimes obsolete4 ,l4 undata4 ,the waved ,lucina4 ,orbicular1 thin1 convex1 undulated with fine irregular stri2 exterior pale yellow1 interior white2 margin glossy and plain4 #h4 ,donax4 ,the ,wedge ,shell4 ,twenty-seven species4 ,the singularity of form that gave rise to its common name renders it easily distinguished4 ,it very much resembles a wedge1 being very broad and thick at one extremity1 and gradually tapering towards the other4 ,they vary in colour1 but the most general is purple radiated on a white ground1 diverging from the beak to the margin2 many have an orange tinge1 and others a pink hue2 the interior generally partakes of the colour of the exterior4 ,there are not1 perhaps1 two species that have absolutely the same hinge4 ,the ,donax is found buried deep in the sand of the seashore1 with the short side uppermost4 ,shell sub-trigonal1 greater in length than in height1 equivalve1 very inequilateral2 posterior side much shorter than the anterior2 summits almost vertical2 hinge complex1 similar2 two cardinal teeth in one or both valves2 one or two remote lateral teeth on each valve2 ligament posterior1 short1 and inflated2 two rounded muscular impressions4 ,donax scortum4 ,d4 pubescens4 ,d4 compressa4 ,d4 cuneata4 ,d4 deltoides4 ,d4 radians4 ,d4 abbreviata4 ,d4 triquetra4 ,d4 ringens4 ,d4 rugosa4 ,d4 ,cayennensis4 ,d4 elongata4 ,d4 denticulata4 ,d4 granosa4 ,d4 columbella4 ,d4 veneriformis4 ,d4 ,australis4 ,d4 epidermia4 ,d4 bicolor4 ,d4 vittata4 ,d4 meroe4 ,d4 scripta4 ,d4 trunculus4 ,d4 flabagella4 ,d4 cinatinum4 ,d4 ,martinicensis4 ,d4 cardioides4 ,d4 scortum4 ,the beaked ,donax4 ,pl4 #h1 fig4 #d4 ,species oval1 of which the posterior side is sub-truncated2 with decussated and muricated stri4 ,d4 trunculus4 ,the common ,donax4 ,oblong1 glossy1 finely striated longitudinally1 transversely banded and radiated with purple2 white1 clouded with purple within2 internal margin of the valves distinctly dentated or crenulated4 ,d4 denticulata4 ,the denticulated ,donax4 ,species of which the posterior side is truncated2 furrowed from the summit to the base4 #i4 ,capsa4 ,two species4 ,this genus was separated by ,lamarck from the ,donax on account of the peculiarity of the hinge4 ,capsa lvigata4 ,capsa ,braziliensis4 ,c4 lvigata4 ,the smooth ,capsa4 ,triangular1 sub-equilateral1 obsoletely striated transversely2 covered with a greenish yellow epidermis2 inside violet towards the umbones4 ,c4 ,braziliensis4 ,the ,brazilian ,capsa4 ,pl4 #h1 fig4 #g4 ,shell elongated1 covered with epidermis2 equivalve1 close2 the cardinal teeth reduced to one large sub-bifid tooth on the right valve1 placing itself between two very thin ones on the left2 ligament external1 on the short side4 #aj4 ,crassina4 ,one species4 ,distinguished from the ,crassatella by the position of the ligament1 and from the ,venus by having only two teeth on each valve2 one of them on the left valve projects very slightly4 ,c4 ,danmoniensis4 ,the ,devonshire ,crassina4 ,pl4 #f1 fig4 #a4 ,solid1 thick1 sub-orbicular1 sub-equilateral2 two very large divergent teeth on one valve1 and two very unequal ones on the other2 regular parallel grooves and ribs2 covered with a yellowish epidermis2 inside white2 margin broad and plain4 ,,family ,,ix4 ,,conchacea4 ,seven genera4 ,this family is divided into ,conch fluviatiles1 fresh-water shells1 and ,conch marin1 sea shells4 ,c4 ,,fluviatiles4 ,three genera4 #a4 ,cyclas4 ,eleven species4 ,the shells of this genus are very small1 and are found buried in the mud of fresh waters2 the apices or summits are never eroded1 and some species are so thin as to be transparent4 ,shell covered with a brown epidermis1 oval or sub-orbicular1 regular1 equivalve1 inequilateral2 summits blunt1 contiguous1 or turned anteriorly2 hinge similar1 complex1 formed by a variable number of cardinal teeth1 and by two remote lateral teeth with a cavity at the base2 ligament exterior1 posterior1 and convex2 two distant muscular impressions1 without posterior sinus4 ,cyclas rivicola4 ,c4 cornea4 ,c4 lacustris4 ,c4 obliqua4 ,c4 calyculata4 ,c4 obtusalis4 ,c4 fontinalis4 ,c4 ,australis4 ,c4 sulcata4 ,c4 striatina4 ,c4 ,sarratogea4 ,c4 cornea4 ,the horny ,cyclas4 ,pl4 #i1 fig4 #g4 ,species sub-orbicular1 convex1 thin1 pellucid1 with fine concentric stri2 cardinal teeth a little variable1 always very small1 and sometimes obsolete2 summits not eroded1 covered with a horn-coloured epidermis2 interior bluish white4 #b4 ,cyrena4 ,ten species4 ,this genus of shells is found in rapid rivers and streams2 it was formerly classed with the ,cyclas1 from which1 however1 it greatly differs in having three cardinal teeth on each valve1 and also lateral teeth4 ,they are thick1 solid shells1 sometimes of a large size2 the apices always eroded or carious4 ,shell rounded and trigonal1 ventricose1 inequilateral2 hinge with three teeth on each valve2 two lateral teeth1 one of which is near the primary ones2 ligament exterior1 placed on the largest side2 in some species the lateral teeth are crenulated1 in others they are entire4 ,cyrena trigonella4 ,c4 orientalis4 ,c4 cor4 ,c4 depressa4 ,c4 ,caroliniensis4 ,c4 fuscata4 ,c4 fluminea4 ,c4 violacea4 ,c4 ,bengalensis4 ,c4 ,ceylanico4 ,c4 fluminea4 ,the river ,cyrena4 ,pl4 #f1 fig4 #g4 ,species sub-trigonal or elongated oval2 summits decorticated1 more anterior2 three cardinal teeth1 of which the two posterior are forked2 exterior greenish brown1 interior variegated with white and violet2 sulcated transversely4 #c4 ,galathea4 ,one species4 ,this beautiful shell is found in fresh waters1 and is distinguished from the ,cyrena by the divergent form of the primary tooth4 ,g4 radiata4 ,the radiated ,galathea4 ,pl4 #f1 fig4 #h4 ,shell equivalve1 sub-trigonal1 covered with a greenish epidermis1 beneath which the surface is of a milky white1 highly polished1 with several violet or pale chestnut rays diverging from the apex to the margin2 primary teeth furrowed1 two on the right valve joined at the base1 three on the other valve placed triangularly1 the intermediate one being advanced1 separate1 thick1 and callous2 the muscular impressions are lateral1 and appear double on each side4 ,c4 ,,marin4 ,four genera4 #d4 ,cyprina4 ,two species4 ,this shell is generally large1 resembling the ,venus1 from which it may be distinguished by having on the front side one impressed lateral tooth1 which is sometimes obsolete2 the nymph or callosities of the hinge large1 arched1 and terminated near the apices by a cavity1 sometimes very deep4 ,de ,blainville says that this genus is intermediary to the ,cyclas and the ,venus1 and contains but one living species2 ,lamarck makes two1 though at first he characterized eight4 ,cyprina tennistria4 ,cyprina ,islandica4 ,c4 ,islandica4 ,the ,icelandic ,cyprina4 ,pl4 #i1 fig4 #b4 ,shell thick1 regular1 heart-shaped1 covered with dark brown epidermis2 white interior2 sub-striated longitudinally2 apices very strongly recurved anteriorly1 and often contiguous2 hinge thick1 sub-similar1 formed by three cardinal teeth but little convergent1 and by one remote posterior lateral tooth1 sometimes obsolete2 ligament very thick1 convex1 fixed to large1 arched1 nymphal callosities1 preceded by a cavity more or less deep1 hollowed immediately behind the summits2 muscular impressions subcircular and very distant4 #e4 ,cytherea4 ,seventy-eight species4 ,this genus was taken from the ,venus1 and is easily defined as distinct from it by having four primary teeth on one valve1 and only three united on the other1 with an isolated cavity1 oval and parallel to the margin2 the lateral teeth divergent to the summit4 ,in some species the internal margin is entire1 having the anterior cardinal tooth with a striated canal or uneven sides2 in others the anterior cardinal tooth is entire1 without a striated canal2 sometimes the internal margin is crenulated or dentated4 ,shell solid1 regular1 equivalve1 inequilateral2 apices equal1 recurved1 and slightly projecting2 four primary teeth on one valve1 of which three are divergent and approximating at the base1 and one remote2 three primary divergent teeth on the other valve1 with a distant cavity parallel to the edge4 ,cytherea lusoria4 ,c4 petechialis4 ,c4 impudica4 ,c4 castanea4 ,c4 zonaria4 ,c4 graphica4 ,c4 morphina4 ,c4 purpurata4 ,c4 casta4 ,c4 corbicula4 ,c4 meretrix4 ,c4 gigantea4 ,c4 erycina4 ,c4 lilacina4 ,c4 impar4 ,c4 erycinella4 ,c4 pectoralis4 ,c4 planatella4 ,c4 florida4 ,c4 nitidula4 ,c4 ,chione4 ,c4 maculata4 ,c4 citrina4 ,c4 albina4 ,c4 lata4 ,c4 mactroides4 ,c4 trigonella4 ,c4 sulcatina4 ,c4 ,hebra4 ,c4 castrensis4 ,c4 ornata4 ,c4 picta4 ,c4 tigrina4 ,c4 scripta4 ,c4 numulina4 ,c4 muscaria4 ,c4 pectinata4 ,c4 gibbia4 ,c4 ranella4 ,c4 testudinalis4 ,c4 divaricata4 ,c4 cuneata4 ,c4 placunella4 ,c4 rugifera4 ,c4 tripla4 ,c4 ,venetiana4 ,c4 juvenilis4 ,c4 rufa4 ,c4 ,guiniensis4 ,c4 ,dione4 ,c4 ,arabica4 ,c4 trimaculata4 ,c4 immaculata4 ,c4 pellucida4 ,c4 hepatica4 ,c4 lucinalis4 ,c4 lactea4 ,c4 exoleta4 ,c4 lincta4 ,c4 concentrica4 ,c4 prostrata4 ,c4 interrupta4 ,c4 tigerina4 ,c4 punctata4 ,c4 umbonella4 ,c4 undatina4 ,c4 pulicaris4 ,c4 mixta4 ,c4 abbreviata4 ,c4 plicatina4 ,c4 flexuosa4 ,c4 macrodon4 ,c4 lunularis4 ,c4 squamosa4 ,c4 lunaris4 ,c4 cardilla4 ,c4 cygnus4 ,c4 dentaria4 ,c4 ,chione4 ,the ,chione ,cytherea4 ,thick1 solid1 heart-shaped1 covered with a smooth brown epidermis1 beneath which the shell is of a beautiful purple2 radiated longitudinally1 faintly wrinkled transversely1 anterior cardinal tooth entire1 and without a striated canal2 apex turned sideways1 with a cordiform depression4 ,c4 mactroides4 ,the ,mactra-like ,cytherea4 ,pl4 #i1 fig4 #d4 ,species thin1 convex1 triangular2 summits very marked2 margins sharp2 anterior cardinal tooth entire4 ,c4 pectinata4 ,the pectinated ,cytherea4 ,species oval1 thick1 solid1 more or less compressed1 costated1 pectinated upon the edges4 #f4 ,venus4 ,eighty-eight species4 ,this genus of shells is numerous and varied4 ,it surpasses all bivalve shells in beauty1 and is in form very like the ,cytherea1 but easily distinguished by the hinge1 which almost invariably contains three approximate teeth1 and a lateral tooth diverging to the summit4 ,the internal margin of the valves is crenated or dentated1 with or without lamellar stri4 ,the shells are of the most beautiful and lively tints2 the exterior as well as the interior colouring is of almost every possible shade and hue4 ,they are found buried a little below the surface on the sandy shores of most parts of the world1 particularly in warm climates4 ,shell solid1 thick1 regular1 perfectly equivalve and close1 more or less inequilateral2 summits well marked1 inclined anteriorly2 hinge sub-similar2 the middle cardinal tooth forked1 or three cardinal teeth more or less contiguous and convergent towards the summit2 ligament thick1 often arched1 convex1 and exterior2 two distant muscular impressions2 cordiform depressions beneath the beaks4 ,venus puerpera4 ,v4 reticulata4 ,v4 pygma4 ,v4 corbis4 ,v4 verrucosa4 ,v4 rugosa4 ,v4 casina4 ,v4 crebiscula4 ,v4 crenulata4 ,v4 discina4 ,v4 granulata4 ,v4 marica4 ,v4 cingulata4 ,v4 cardivides4 ,v4 grisea4 ,v4 elliptica4 ,v4 ,dombeii4 ,v4 mercenaria4 ,v4 lagopus4 ,v4 gallina4 ,v4 gallinula4 ,v4 pectinula4 ,v4 sulcata4 ,v4 lamellata4 ,v4 exalbida4 ,v4 rufa4 ,v4 dorsata4 ,v4 hiantina4 ,v4 crassisulca4 ,v4 corrugata4 ,v4 ,malabarica4 ,v4 papilionacea4 ,v4 adspersa4 ,v4 punctifera4 ,v4 turgida4 ,v4 literata4 ,v4 florida4 ,v4 petalina4 ,v4 bicolor4 ,v4 floridella4 ,v4 catenifera4 ,v4 pulchella4 ,v4 sinuosa4 ,v4 tristis4 ,v4 plicata4 ,v4 cancellata4 ,v4 pectorina4 ,v4 sulcaria4 ,v4 textilis4 ,v4 texturata4 ,v4 geographica4 ,v4 rariflamma4 ,v4 decussata4 ,v4 pullastra4 ,v4 glandina4 ,v4 truncata4 ,v4 retifera4 ,v4 anomala4 ,v4 galactites4 ,v4 exilis4 ,v4 scalarina4 ,v4 ,scotica4 ,v4 aurea4 ,v4 virginea4 ,v4 marmorata4 ,v4 ovula4 ,v4 laterisulca4 ,v4 callipyga4 ,v4 opima4 ,v4 nebulosa4 ,v4 phaseolina4 ,v4 carneola4 ,v4 flammiculata4 ,v4 conularis4 ,v4 strigosa4 ,v4 aphrodina4 ,v4 ,perronii4 ,v4 aphrodinoides4 ,v4 elegantina4 ,v4 flammea4 ,v4 rimularis4 ,v4 vulvina4 ,v4 vermiculosa4 ,v4 subrostrata4 ,v4 undulosa4 ,v4 pumila4 ,v4 ovata4 ,v4 inquinata4 ,v4 ,casina4 ,the ,casina1 or broad-ribbed ,venus4 ,pl4 #h1 fig4 #b4 ,sub-orbicular1 with transversely acute recurved ridges2 lamellar stri2 crenulated on the hind margin2 slightly channelled behind the depression4 ,v4 decussata4 ,the intersected ,venus4 ,pl4 #i1 fig4 #c4 ,species sub-rhomboidal1 with decussated stri2 margin not denticulated2 umbo placed near one end2 the three teeth of the hinge very contiguous and very weak2 exterior brownish and marked with purple lines4 ,v4 aurea4 ,the golden ,venus4 ,sub-orbicular1 inequilateral1 transversely and concentrically striated2 yellow golden colour4 ,v4 corbis4 ,the basket ,venus4 ,species sub-rhomboidal1 deeply latticed2 teeth very thick1 ligament entirely concealed1 margin dentated4 ,v4 puerpera4 ,the convex or spotted ,venus4 ,species thick1 solid1 orbicular or sub-orbicular1 with concentric stri1 or1 rather1 lamin2 teeth very thick2 margin dentated4 ,v4 granulata4 ,the granulated ,venus4 ,species thick1 solid1 cardium-shaped1 radiated from the summit to the base4 #g4 ,venericardia4 ,one species4 ,this genus resembles the ,venus1 but has only two oblique cardinal teeth on each valve4 ,shell equivalve1 inequilateral1 sub-orbicular1 sides generally with longitudinal rayed ribs2 hinge with two oblique cardinal teeth in each valve1 turned in the same direction4 ,v4 imbricata4 ,the imbricated ,venericardia4 ,pl4 #i1 fig4 #a4 ,species almost round1 having convex longitudinal ribs1 covered with imbricated rough scales2 inferior margin rounded and dentated2 more and more equilateral2 the two teeth short and oblique4 ,,family ,x4 ,,cardiacea4 ,five genera4 #a4 ,cardium4 ,cockle1 or ,heart ,shell4 ,forty-eight species4 ,this genus received its name from its resemblance to a heart 774 ,it is so well defined by ,linnus that no alteration was made by ,lamarck1 except in making two divisions of them2 the first distinguished by having the anterior side as large or larger than the posterior1 and no distinct angle at the apex2 the second by possessing carinated or angular umbones1 and the posterior side often much larger than the anterior4 ,these shells are found at a small depth in the sand on almost every seashore4 ,shell inflated1 equivalve1 sub-cordiform 7when seen anteriorly71 generally costated from the summit to the circumference2 summits very evident2 slightly recurved forward2 hinge complex1 similar1 formed by two oblique cardinal teeth1 articulating with the corresponding teeth on the other valve2 two distant lateral teeth on each valve2 ligament dorsal1 posterior1 and very short4 ,cardium costatum4 ,c4 ,indicum4 ,c4 ringens4 ,c4 ,asiaticum4 ,c4 tennicostatum4 ,c4 fimbriatum4 ,c4 pseudolima4 ,c4 aculeatum4 ,c4 erinaceum4 ,c4 tuberculatum4 ,c4 ,brasilianum4 ,c4 apertum4 ,c4 papyraceum4 ,c4 bullatum4 ,c4 ciliare4 ,c4 echinatum4 ,c4 lvigatum4 ,c4 biradiatum4 ,c4 eolicum4 ,c4 pectinatum4 ,c4 isocardia4 ,c4 muricatum4 ,c4 angulatum4 ,c4 marmoreum4 ,c4 elongatum4 ,c4 ventricosum4 ,c4 rugosum4 ,c4 sulcatum4 ,c4 serratum4 ,c4 unedo4 ,c4 medium4 ,c4 fragum4 ,c4 retusum4 ,c4 tumoriferum4 ,c4 rusticum4 ,c4 edule4 ,c4 ,groenlandicum4 ,c4 latum4 ,c4 crenulatum4 ,c4 exiguum4 ,c4 minutum4 ,c4 roseum4 ,c4 scobinatum4 ,c4 hemicardium4 ,c4 cardissa4 ,c4 inversum4 ,c4 ,junoni4 ,c4 lineatum4 ,c4 edule4 ,the edible ,cardium1 or common ,cockle4 ,pl4 #aj1 fig4 #b4 ,species not gaping1 with about twenty-six depressed ribs and transverse obsolete scales2 of a cream colour2 beaks protuberant4 ,c4 cardissa4 ,venus's ,heart4 ,species heart-shaped1 valves angularly flattened1 umbones alternating4 ,c4 lvigatum4 ,the smooth ,cardium4 ,species smooth or nearly so1 anterior side as large as the posterior4 ,c4 hemicardium4 ,the half-heart ,cardium4 ,species ribbed1 with elevated rough stri2 the anterior side is very short and almost flat4 ,c4 costatum4 ,the high-ribbed ,cardium4 ,no angle at the umbones2 anterior side at least as large as the posterior2 rows of white1 hollow1 elevated ribs1 situated at regular distances1 proceeding from the umbones to the margin1 with the spaces between them of a reddish brown colour4 ,c4 unedo4 ,the ,strawberry ,heart4 ,species with ribs armed with small crescent-shaped scales4 ,c4 tuberculatum4 ,the tuberculated ,cardium4 ,species not gaping1 with large ribs armed with nodules4 #b4 ,cardita4 ,twenty-one species4 ,lamarck took this genus from the ,chama on account of several peculiarities in the shell as well as in the animal4 ,it is not affixed to other bodies by its lower valve1 but1 according to ,de ,blainville1 lies exposed on the rocks4 ,there is some difficulty in distinguishing this genus from the ,venericardia1 without carefully examining the position of the two teeth4 ,shell regular1 thick1 solid1 equivalve1 more or less inequilateral2 summit dorsal1 always very recurved anteriorly2 hinge similar1 formed by two oblique teeth2 one short cardinal placed beneath the umbo1 the other oblique1 arched1 marginal1 and prolonged2 ligament elongated1 sub-exterior1 and inserted2 two very distinct muscular impressions4 ,cardita sulcata4 ,c4 ajar4 ,c4 turgida4 ,c4 squamosa4 ,c4 phrenetica4 ,c4 crassicosta4 ,c4 rufescens4 ,c4 calyculata4 ,c4 subaspera4 ,c4 nodulosa4 ,c4 intermedia4 ,c4 trepezia4 ,c4 bicolor4 ,c4 depressa4 ,c4 concamerata4 ,c4 sinuata4 ,c4 aviculina4 ,c4 citrina4 ,c4 sublvigata4 ,c4 corbularis4 ,c4 lithophagella4 ,c4 crassicosta4 ,the thick-ribbed ,cardita4 ,species elongated1 a little gaping at the inferior margin2 ligament concealed4 ,c4 sulcata4 ,the furrowed ,cardita4 ,pl4 #aj1 fig4 #c4 ,sub-cordiform or oval1 more transverse than longitudinal2 colour white1 tesselated with brown2 posterior depression heart-shaped2 longitudinal1 convex1 transversely-striated ribs4 #c4 ,cypricardia4 ,four species4 ,distinguished from the ,cardita by having three teeth beneath the apices1 and a callous lengthened tooth or ridge4 ,shell obliquely elongated1 equivalve1 inequilateral2 valves striated1 but never ribbed2 hinge with three teeth beneath the umbo1 and one lateral elongated tooth4 ,cypricardia ,guinaica4 ,c4 angulata4 ,c4 rostrata4 ,c4 coralliophaga4 ,c4 ,guinaica4 ,the ,guinea ,cypricardia4 ,pl4 #aj1 fig4 #f4 ,species elongated1 very inequilateral2 summit rounded and recurved anteriorly2 two short divergent cardinal teeth1 besides a lamellous tooth2 ligament very long1 projecting or not2 yellowish white1 covered with decussated stri4 #d4 ,hiatella4 ,two species4 ,established by ,daudin2 classed by ,linnus with the ,solen1 but ,lamarck is of opinion that it more nearly approximates the ,cardita4 ,shell thin1 sub-rhomboidal1 equivalve1 very inequilateral1 gaping at its inferior margin and posterior extremity2 the summit very anterior and recurved in front2 dorsal hinge formed by a single tooth on one valve corresponding to a semicircular slope on the opposite valve1 or by a small tooth with a cardinal cavity in each valve2 ligament probably exterior and dorsal2 muscular impressions unknown4 ,hiatella ,arctica4 ,hiatella biaperta4 ,h4 ,arctica4 ,the ,arctic ,hiatella4 ,shell small1 transversely oblong2 apices truncated1 with two divergent spring ridges2 a small tooth on each valve2 cream colour1 with decussated stri2 inside pearly4 ,h4 biaperta4 ,the double-clefted ,hiatella4 ,pl4 #aj1 fig4 #d4 ,species that has only a single tooth on one valve2 yellowish white4 #e4 ,isocardia4 ,three species4 ,taken from the ,chama of ,linnus on account of a peculiarity in the shape of the cardinal teeth1 and the singular curvature of the umbones4 ,isocardia cor4 ,i4 semisulcata4 ,i4 ,moltkiana4 ,i4 cor4 ,the heart ,isocardia4 ,pl4 #ab1 fig4 #d4 ,shell free1 regular1 heart-shaped1 equivalve1 very inequilateral2 summits diverging1 strongly recurved spirally1 forward1 and outward2 hinge dorsal1 long1 similar1 formed by two flat cardinal teeth1 with an elongated lateral one behind the ligament1 which is dorsal and exterior1 diverging towards the summits2 muscular impressions very distinct and rather small2 slightly wrinkled longitudinally2 exterior reddish chestnut colour1 interior white4 ,the ,isocardia ,moltkiana is a very rare shell1 and the most elegant species of this genus4 ,,family ,,xi4 ,,arcacea4 ,four genera4 #a4 ,cuculla4 ,one species4 ,distinguished from the ,arca by the muscular impression within1 to one side of which is an ear-shaped testaceous appendage2 the shell is more trapeziform1 and the hinge by age becomes obsolete1 giving the teeth a more horizontal appearance4 ,shell equivalve1 inequilateral1 trapeziform1 heart-shaped2 beaks distant1 and separated by the angular groove of the ligament1 which is altogether external2 hinge linear1 straight1 with small transverse teeth1 having at its extremity from two to five parallel ribs2 valves marked with minute and strong longitudinal stri1 and sometimes one valve overlaps2 margins crenulated4 ,c4 auriculifera4 ,the eared ,cuculla4 ,pl4 #aj1 fig4 #a4 ,species navicular or obliquely heart-shaped1 with decussated stri2 hinge completely straight1 with two parallel ribs at each end1 the terminal teeth longer and more oblique than the others2 exterior chestnut colour1 interior white1 tinged with violet4 #b4 ,arca4 ,the ,ark4 ,thirty-seven species4 ,this genus is easily known by its resemblance to the hull of a ship2 the hinge is peculiar1 being composed of numerous sharp teeth alternately inserted between each other4 ,the ,arca of ,linnus was divided by ,lamarck into the four genera that compose this family1 each possessing a strong distinctive character4 ,all the shells of this family are found in the sea at a little distance from the shore2 they are covered with a dark greenish lamellar or velvet-like epidermis1 frequently ending in a deep fringe at the margin4 ,shell a little varied in form1 but most generally elongated1 and more or less oblique at the posterior extremity2 sometimes very inequilateral2 summits more or less distant1 and a little recurved forward2 hinge anomalous1 straight1 or a little curved2 long1 and formed by a line of short vertical teeth decreasing from the extremities to the centre2 ligament exterior1 broad2 sometimes the margin is crenated4 ,arca tortuosa4 ,a4 semitorta4 ,a4 ,no4 ,a4 tetragona4 ,a4 umbonata4 ,a4 sinuata4 ,a4 avellana4 ,a4 cardissa4 ,a4 ventricosa4 ,a4 retusa4 ,a4 sulcata4 ,a4 ovata4 ,a4 ,helbingii4 ,a4 scapha4 ,a4 barbata4 ,a4 fusca4 ,a4 ,magellanica4 ,a4 ,domingensis4 ,a4 lactea4 ,a4 trapezina4 ,a4 pistachia4 ,a4 pisolina4 ,a4 cancellaria4 ,a4 callifera4 ,a4 irudina4 ,a4 bisulcata4 ,a4 ,indica4 ,a4 senilis4 ,a4 antiquata4 ,a4 rhombea4 ,a4 granosa4 ,a4 auriculata4 ,a4 ,brasiliana4 ,a4 corbicula4 ,a4 squamosa4 ,a4 ,cayennensis4 ,a4 inequivalvis4 ,a4 ,no4 ,noah's ,ark4 ,pl4 #aj1 fig4 #e4 ,species boat-shaped1 oblong1 striated transversely and ribbed longitudinally2 umbones remote and incurvated2 margins entire and gaping2 hinge straight2 whitish1 with divergent zigzag chestnut stripes2 inside bluish white4 ,a4 tortuosa4 ,the twisted ,ark4 ,a rare species2 shell elongated1 close1 twisted2 hinge completely straight4 ,a4 barbata4 ,the bearded ,ark4 ,species with the hinge straight1 not hollowed or not gaping inferiorly1 and of which the muscle is not adherent4 #c4 ,pectunculus4 ,nineteen species4 ,this genus has the ligament partially inserted internally1 and has no exterior angular groove4 ,the valves never gape1 often have rayed longitudinal ribs1 are compressed1 and the shell by age becomes thick and ponderous1 sometimes attaining a large size4 ,the teeth in the hinge are not so numerous as in the ,arca and ,cuculla2 the centre teeth appear worn down4 ,shell close1 orbicular1 doubly convex1 equivalve1 sub-equilateral2 summits almost vertical1 and more or less distant2 hinge formed on each valve by a rather numerous series of small teeth1 disposed in a curved line1 sometimes broken under the summit2 ligament external and large4 ,pectunculus glycimeris4 ,p4 pilosus4 ,p4 undulatus4 ,p4 marmoratus4 ,p4 scriptus4 ,p4 angulatus ,p4 stellatus4 ,p4 pallens4 ,p4 violacescens4 ,p4 zonalis4 ,p4 pennaceus4 ,p4 rubens4 ,p4 castaneus4 ,p4 pectiniformis4 ,p4 striatularis4 ,p4 nummarius4 ,p4 pectinatus4 ,p4 radians4 ,p4 vitreus4 ,p4 glycimeris4 ,the delicious ,pectunculus4 ,sub-orbicular1 umbones produced2 finely striated transversely and longitudinally2 covered with epidermis1 under which it is marked with reddish chestnut spots or bands2 inside white2 margins crenulated4 ,p4 pilosus4 ,the hairy ,pectunculus4 ,species convex1 more or less smooth and hairy4 ,p4 pectiniformis4 ,the ,pecten-shaped ,pectunculus4 ,pl4 #aa1 fig4 #f4 ,species lenticular1 more compressed1 pectinated1 and more or less rough4 #d4 ,nucula4 ,six species4 ,shell small1 more or less thick1 sub-triangular1 equivalve1 inequilateral2 summits contiguous and turned forward2 hinge similar1 formed by a numerous series of very pointed teeth1 pectinated and disposed in a line interrupted under the summit2 ligament internal1 short1 inserted in a small oblique cavity in each valve2 two muscular impressions2 valves more or less pearly within4 ,nucula lanceolata4 ,n4 rostrata4 ,n4 pella4 ,n4 ,nicobarica4 ,n4 obliqua4 ,n4 margaritacea4 ,n4 rostrata4 ,the beaked ,nucula4 ,species of which the margin is entire4 ,n4 margaritacea4 ,the pearly ,nucula4 ,pl4 #aa1 fig4 #g4 ,species of which the margin is crenated2 numerous regular pectinated teeth2 obliquely ovate1 trigonal2 stri minute and almost obsolete2 covered with a greenish epidermis2 inside silvery1 pearl-like4 ,,family ,,xii4 ,,trigonacea4 ,two genera4 #a4 ,trigonia4 ,one species4 ,supposed to be in very deep places in the sea2 it is a strong1 beautiful1 pearly shell1 sub-trigonal or sub-orbicular2 thick1 regular1 equivalve1 inequilateral2 summits slightly prominent1 recurved1 anterodorsal2 hinge complex1 dorsal1 dissimilar2 two large oblong teeth laterally compressed1 joined angularly under the summit1 strongly furrowed on the right valve1 penetrating into two excavations of the same form1 equally furrowed on the left valve2 ligament exterior and marginal2 two distinct muscular impressions4 ,t4 pectinata4 ,the pectinated ,trigonia4 ,pl4 #aa1 fig4 #d4 ,species sub-orbicular1 with radiated or divergent1 prominent1 and somewhat scaly ribs2 inside pearly2 margin crenellated4 #b4 ,castalia4 ,one species4 ,this genus is found in fresh waters1 and differs from the ,trigonia in the number and position of the lamellar teeth4 ,the substance of the shell is pearly4 ,shell sub-trigonal1 equivalve1 inequilateral2 umbones eroded1 covered with epidermis1 and inflected anteriorly2 hinge with two lamellar teeth1 transversely striated1 one of them posterior1 distant1 and shortened1 the other anterior1 lengthened1 and lateral2 ligament exterior4 ,c4 ambigua4 ,the ambiguous ,castalia4 ,pl4 #aa1 fig4 #e4 ,short1 sub-trigonal2 umbones truncated2 longitudinally ribbed1 with distant transverse stri2 covered with epidermis1 under which the shell is of a pale chestnut brown1 inside pearly2 the lamellar and pr-apicial teeth are well marked1 more regular1 and all striated perpendicular to their length4 ,,family ,,xiii4 ,,naiades4 ,four genera4 #a4 ,unio4 ,forty-eight species4 ,the species of this genus become every day more numerous2 they are found in all countries1 but particularly in ,north ,america4 ,the ,unio is a fresh-water shell1 and therefore1 with great propriety1 removed from the ,mya1 which consists entirely of marine shells4 ,the substance is pearly2 the exterior covered with a brown or green epidermis2 the apices eroded4 ,they are found in the mud of rivers1 with their apices downward2 some are slightly gaping1 and some species produce fine pearls4 ,shell generally very thick1 pearly within1 covered with epidermis2 summits eroded1 dorsal1 and sub-interior2 besides a long lamellous tooth under the ligament1 the hinge is formed by a double precardinal tooth1 more or less compressed1 and dentated irregularly on the left valve1 simple on the right valve2 ligament external1 dorsal1 and post-apicial2 muscular impressions well marked4 ,unio sinuata4 ,u4 elongata4 ,u4 crassidens4 ,u4 ,peruviana4 ,u4 rariplicata4 ,u4 pupurata4 ,u4 ligamentina4 ,u4 obliqua4 ,u4 retusa4 ,u4 rarisulcata4 ,u4 coarctata4 ,u4 purpurascens4 ,u4 radiata4 ,u4 brevialis4 ,u4 rhombula4 ,u4 carinifera4 ,u4 ,georgina4 ,u4 clava4 ,u4 recta4 ,u4 naviformis4 ,u4 glabrata4 ,u4 nasuta4 ,u4 ovata4 ,u4 rotundata4 ,u4 littoralis4 ,u4 semirugata4 ,u4 nana4 ,u4 alata4 ,u4 deladonta4 ,u4 sulcidens4 ,u4 rostrata4 ,u4 pictorum4 ,u4 ,batava4 ,u4 corrugata4 ,u4 nodulosa4 ,u4 varicosa4 ,u4 granosa4 ,u4 depressa4 ,u4 ,virginianum4 ,u4 luteola4 ,u4 marginalis4 ,u4 angusta4 ,u4 manca4 ,u4 cariosa4 ,u4 spuria4 ,u4 ,australis4 ,u4 anodontina4 ,u4 sub-orbiculata4 ,u4 pictorum4 ,the ,painter's ,unio4 ,pl4 #h1 fig4 #f4 ,species oval1 not auriculated1 strong1 anterior side rhomboid and attenuated2 the opposite side obtusely acute2 the umbones somewhat warted2 concentrically wrinkled2 covered with a dusky green epidermis4 ,u4 sinuata4 ,the crooked ,unio4 ,species oval1 sub-auriculated2 cardinal tooth short1 not lamellar or sub-striated4 ,u4 sub-orbiculata4 ,the sub-orbicular ,unio4 ,species round or almost round2 cardinal tooth compressed1 elongated1 and often lamellar4 #b4 ,hyria4 ,two species4 ,easily distinguished from the ,unio by a compound cardinal tooth1 which slopes in an inclined position towards the posterior side4 ,they are more found in lakes than in rivers4 ,shell solid1 pearly1 equivalve1 obliquely triangular1 auriculated2 base truncated and straight2 hinge with two projecting teeth2 the cardinal divided into numerous divergent parts2 anterior ones smaller1 the others long and lamellar4 ,hyria avicularis4 ,hyria corrugata4 ,h4 avicularis4 ,the little bird ,hyria4 ,pl4 #e1 fig4 #d4 ,umbones smooth and polished2 ears large1 with pointed terminations2 finely striated2 interior pearly1 exterior of a rich reddish golden-yellow colour2 covered with a greenish brown epidermis4 #c4 ,anodonta4 ,fifteen species4 ,a fresh-water shell1 found in ponds and lakes1 difficult to be distinguished from the ,unio but by the hinge1 which wants the cardinal and lateral tooth1 and merely presents a smooth internal rim round the edge terminated by a sinus or notch1 in which the anterior extremity of the ligament is sunk2 the substance is pearly1 covered with a false epidermis4 ,shell ordinarily rather thin1 regular1 close1 equivalve1 inequilateral2 summit anterodorsal2 hinge linear1 without teeth2 ligament external1 dorsal1 and post-apicial2 two well-marked muscular impressions4 ,anodonta cygna4 ,a4 anatina4 ,a4 sulcata4 ,a4 fragilis4 ,a4 cataracta4 ,a4 trapezialis4 ,a4 exotica4 ,a4 rubens4 ,a4 crispata4 ,a4 uniopsis4 ,a4 ,pennsylvanica4 ,a4 intermedia4 ,a4 glauca4 ,a4 sinuosa4 ,a4 ,patagonica4 ,a4 cygna4 ,the ,swan ,anodonta4 ,pl4 #aa1 fig4 #b4 ,species oval1 thin1 elongated1 hinge straight1 and only auriculated anteriorly2 beaks small and ventricose2 concentrically wrinkled2 covered with a greenish epidermis1 which is frequently of a brown tinge towards the umbo4 ,a4 rubens4 ,the ruddy ,anodonta4 ,species oval1 hinge arched1 without trace of auricula or ear4 ,a4 trapezialis4 ,the trapezium ,anodonta4 ,pl4 #aa1 fig4 #c4 ,species oval or rounded1 auriculated on both sides the summit4 #d4 ,iridina4 ,one species4 ,a very rare shell1 separated from the ,anodonta on account of the hinge being attenuated in the middle1 and having small tubercles distributed along its length4 ,the substance is thicker and more solid than the ,anodonta1 and of a brilliant rose-coloured pearly hue2 it is found in the rivers of warm countries4 ,shell equivalve1 inequilateral1 transverse1 with small apices2 recurved1 but nearly erect2 not auriculated2 hinge very long1 linear1 crenulated through all its length2 ligament external and marginal2 two well-marked muscular impressions4 ,i4 exotica4 ,the exotic ,iridina4 ,the only species of this genus answering to the above description4 ,,family ,,xiv4 ,,chamacea4 ,three genera4 #a4 ,diceras4 ,one fossil species4 ,only found in a fossil state2 distinguished from the ,chama by the hinge1 which is dissimilar1 formed by a large thick tooth1 concave in the greater valve2 summits very projecting2 almost regular spiral contortions4 ,d4 arietina4 ,the ram's-horn ,diceras4 ,shell irregular1 inequivalve1 inequilateral1 somewhat heart-shaped1 with divergent beaks4 #b4 ,chama4 ,the ,clam or ,gaper4 ,seventeen species4 ,in this genus are now comprehended only such as have a thick oblique transverse tooth1 resembling a lengthened callosity1 generally crenulated or grooved1 fitting into a corresponding cavity in the lower valve4 ,the animals inhabiting these shells have the faculty of affixing themselves to other bodies by the lower valve4 ,the ,chama received its name from its gaping2 it is found in most seas1 particularly in the ,southern2 sometimes its colours are elegantly blended4 ,shell irregular1 adherent1 inequivalve1 inequilateral2 summits more or less twisted spirally1 especially in the lower valve2 some from left to right1 others from right to left2 hinge dissimilar1 large1 formed by one lamellous1 arched1 sub-crenulated1 post-cardinal tooth1 articulating into a furrow of the same form2 exterior1 post-apicial1 slightly inserted2 two large and rather distant muscular impressions4 ,chama ,lazarus4 ,c4 damcornis4 ,c4 gryphoides4 ,c4 crenulata4 ,c4 unicornis1 ,c4 arcinella4 ,c4 radians4 ,c4 cristella4 ,c4 florida4 ,c4 limbula4 ,c4 ruginosa4 ,c4 asperella4 ,c4 decussata4 ,c4 albida4 ,c4 ruderalis4 ,c4 croceata4 ,c4 ,japonica4 ,c4 ,lazarus4 ,lazarus's ,chama4 ,pl4 #ab1 fig4 #b4 ,species of which the summits twist from left to right2 imbricated1 dilated1 waved foliations2 striated obsoletely2 exterior white1 orange1 red1 or yellow2 interior white4 ,c4 arcinella4 ,the hedgehog ,chama4 ,species of which the summits twist from right to left2 the pink-coloured ones of this species are the most prized4 #c4 ,etheria4 ,four species4 ,distinguished from the ,chama by the want of teeth in the hinge1 and being of a pearly substance4 ,it is a rare shell1 only found in deep water1 where it is attached to the rocks by the lower valve4 ,its irregular form is perhaps occasioned by the lower valve adapting itself to the form of the body to which it is affixed4 ,two species are fluviatile and two marine4 ,shell adhering1 irregular1 thick1 pearly1 inequivalve1 inequilateral2 summits thick1 little evident2 hinge toothless1 callous1 thick1 irregular2 longitudinal1 sub-dorsal ligament1 partly exterior and partly penetrating into the shell2 two oblong muscular impressions1 one inferior and anterior1 the other superior and sub-posterior2 with or without an oblong incrusted callosity on the base of the valve4 ,etheria elliptica4 ,e4 semilunata4 ,e4 trigonula4 ,e4 transversa4 ,e4 elliptica4 ,the oval ,etheria4 ,pl4 #aa1 fig4 #a4 ,species with an oblong callosity on the anterior part of the shell2 oval1 depressed1 dilated towards the umbones2 summits distant4 ,e4 semilunata4 ,the semilunar ,etheria4 ,species without callosity at the base4 ,,family ,,xv4 ,,tridacnites4 ,two genera4 #a4 ,tridacna4 ,the ,clam ,shell4 ,six species4 ,the most ponderous shell known1 sometimes measuring several feet in length1 and sometimes weighing five hundred pounds4 ,by ,linnus this genus was classed with the ,chama1 but the characteristic distinctions are so great that they are easily known4 ,the ,chama is irregular1 has but one tooth1 and is fastened to other substances by the lower valve2 the ,tridacna is equivalve1 has but two teeth1 and is affixed to other bodies by a byssus consisting of filiform tendons4 ,the animal inhabiting this shell is said to produce very fine pearls1 but there is no pearly appearance on the valves4 ,shell thick1 solid1 varying in size2 some are very small and some very large2 regular1 triangular1 more or less inequilateral2 the summits inclined backward2 hinge dissimilar1 entirely anterior to the summits2 one lamellous precardinal tooth1 and two distant lateral teeth on the left valve1 corresponding to two lamellous precardinal teeth and one remote lateral tooth in the right valve2 ligament anterior1 elongated2 one forked sub-median muscular impression1 almost marginal and oftentimes nearly obsolete2 valves with broad1 rounded longitudinal ribs1 armed with vaulted scales1 more or less elevated2 posterior slope heart-shaped1 and widely gaping4 ,tridacna gigas4 ,t4 elongata4 ,t4 squamosa4 ,t4 crocea4 ,t4 mutica4 ,t4 serrifera4 ,t4 gigas4 ,the giant ,tridacna4 ,pl4 #ab1 fig4 #c4 ,species of which the shell is sometimes very large1 white1 transversely ovate or elongated2 the anterior side longer than the posterior2 broad ribs covered with vaulted scales2 when of a pink or orange colour1 greatly valued4 #b4 ,hippopus4 ,one species4 ,similar to the ,tridacna1 but distinguished from it by having its posterior slope closed with a dentated margin2 its ribs are never arched or vaulted1 and its anterior side is shorter than the posterior side4 ,h4 maculatus4 ,the spotted ,hippopus4 ,pl4 #ab1 fig4 #a4 ,shell transversely ovate1 ventricose1 with scaly ribs2 lunule1 heart-shaped1 and oblique2 margins deeply crenulated2 reddish purple spots4 ,,family ,,xvi4 ,,mytilacea4 ,three genera4 #a4 ,mytilus4 ,the ,muscle4 ,thirty-five species4 ,as arranged by ,lamarck1 now comprises only such shells as are regular1 equivalve1 and longitudinal2 solid in substance1 and attached to other bodies by a short thick byssus4 ,in colour and appearance they greatly vary1 some being smooth and beautifully variegated with delicate colours1 or radiated with purple and white2 some are coarsely ribbed or granulated1 and have only one colour1 as black1 blue1 yellow1 brown1 or green2 all are covered with an epidermis1 to which oftentimes the colour is confined4 ,shell of a close texture1 elongated1 more or less oval1 sometimes sub-triangular1 equivalve1 summits anterior1 more or less curved1 a little sloping inferiorly2 hinge generally without teeth1 or with two very small rudimentary teeth2 ligament dorsal1 linear1 sub-interior1 inserted in a long and narrow furrow2 two muscular impressions1 of which the anterior is very small1 with or without longitudinal grooves or furrows4 ,mytilus ,magellanicus4 ,m4 erosus4 ,m4 crenatus4 ,m4 decussatus4 ,m4 hirsutus4 ,m4 elongatus4 ,m4 latus4 ,m4 zonarius4 ,m4 ungulatus4 ,m4 violaceus4 ,m4 opalus4 ,m4 smaragdinus4 ,m4 corneus4 ,m4 edulis4 ,m4 retusus4 ,m4 ,hesperianus4 ,m4 perna4 ,m4 exustus4 ,m4 bilocularis4 ,m4 ovalis4 ,m4 ustulatus4 ,m4 ,domingensis4 ,m4 ,senegalensis4 ,m4 ,afer4 ,m4 achatinus4 ,m4 ungularis4 ,m4 planulatus4 ,m4 borealis4 ,m4 ,galloprovincialis4 ,m4 angustanus4 ,m4 lineatus4 ,m4 lacunatus4 ,m4 canalis4 ,m4 incurvatus4 ,m4 abbreviatus4 ,m4 incurvatus4 ,the incurvated ,mytilus4 ,nearly smooth1 elongated oval1 valves inflated and curved near the ligament2 apex acute4 ,m4 ,afer4 ,the ,african ,mytilus4 ,more or less compressed and sub-triangular1 without grooves2 byssus very large and much developed2 summit entirely terminal and anterior2 smooth and radiated with blue or purple1 covered with a dark brown epidermis2 inside margin blue1 shade decreasing to the centre4 ,m4 crenatus4 ,the crenated ,mytilus4 ,species longitudinally grooved1 radiated1 or striated4 ,m4 hirsutus4 ,the bearded ,mytilus4 ,species with grooves2 covered with a shaggy or bearded epidermis4 #b4 ,modiola4 ,twenty-three species4 ,taken by ,lamarck from the ,mytilus1 as it differs by being more transverse than longitudinal1 and the beaks1 instead of being terminal1 are placed beneath the apex4 ,shell smooth1 sub-transverse1 equivalve1 regular1 sub-triangular1 the posterior side short2 summits almost lateral2 hinge lateral and linear1 without teeth2 ligament partly interior1 placed in a marginal furrow2 one sub-lateral elongated muscular impression in each valve4 ,modiola ,papuana4 ,m4 tulipa4 ,m4 albicosta4 ,m4 vagina4 ,m4 picta4 ,m4 sulcata4 ,m4 plicatula4 ,m4 semifusca4 ,m4 securis4 ,m4 purpurata4 ,m4 barbata4 ,m4 ,guyanensis4 ,m4 ,adriatica4 ,m4 pulex4 ,m4 discrepans4 ,m4 discors4 ,m4 trapezina4 ,m4 cinnamomea4 ,m4 silicula4 ,m4 plicata4 ,m4 semen4 ,m4 lithophaga4 ,m4 caudigera4 ,m4 discors4 ,the discordant ,modiola4 ,shell elongated oval1 very convex1 narrowest at the anterior end2 striated at the two extremities2 summit oblique2 exterior greenish2 interior white1 with sometimes a pink-tinge1 and somewhat pearly2 crenulated margin4 ,m4 ,papuana4 ,the ,papuan ,modiola4 ,pl4 #ab1 fig4 #f4 ,species smooth1 more or less triangular2 summit near the anterior extremity2 byssus obsolete in adults4 ,m4 sulcata4 ,the furrowed ,modiola4 ,species striated longitudinally4 #c4 ,pinna4 ,the ,wing ,shell4 ,fifteen species4 ,this genus is the same as constituted by ,linnus2 the shell is marine1 generally very brittle and fragile1 in form resembling an acute angled triangle2 usually covered with longitudinal ribs and elevated transverse stri2 generally horn coloured4 ,this genus is remarkable for the production of an abundant byssus of a fine brown silky texture1 which the ,italians frequently fabricate into articles of dress1 equal in appearance to the finest silk4 ,the ,pinn often grow to a large size2 they are sometimes found standing erect in the smooth-water bays1 with the base of the shell uppermost1 but generally affixed by the byssus to rocks and other sub-marine bodies4 ,the filaments that compose the byssus are so tough and strong that the shells are not easily detached4 ,shell fibrous1 fragile1 regular1 equivalve1 longitudinal1 triangular1 base gaping and as if truncated2 summit pointed and straight2 hinge dorsal1 longitudinal1 linear1 and without teeth2 marginal ligament occupying almost the whole of the dorsal edge of the shell2 one very broad muscular impression behind a trace of the anterior in the summit4 ,pinna rudis4 ,p4 flabellum4 ,p4 seminuda4 ,p4 angustina4 ,p4 nobilis4 ,p4 squamosa4 ,p4 marginata4 ,p4 muricata4 ,p4 pectinata4 ,p4 saccata4 ,p4 varicosa4 ,p4 dolabrata4 ,p4 ingens4 ,p4 vexillum4 ,p4 nigrina4 ,p4 squamosa4 ,the scaly ,pinna4 ,species very close and rounded at the posterior extremity2 valves convex1 covered with vaulted imbricated scales4 ,p4 flabellum4 ,the fan ,pinna4 ,pl4 #ac1 fig4 #b4 ,species gaping at the posterior extremity1 which is as if truncated2 valves rather rounded at the upper end1 and in the shape of an expanded fan2 light fawn colour4 ,p4 pectinata4 ,the pectinated ,pinna4 ,pl4 #ac1 fig4 #a4 ,thin1 pellucid2 longitudinally ribbed and spinous for half its width1 obliquely striated transversely on the other half4 ,,family ,,xvii4 ,,malleacea4 ,five genera4 #a4 ,crenatula4 ,seven species4 ,there is one peculiar distinction between this genus and the ,perna2 the hinge of the ,crenatula is composed of slightly concave callous crenulations1 which receive the ligament2 while in the ,perna it consists of parallel truncated linear teeth 7or1 rather1 riblike joints71 corresponding and opposed to the opposite ones1 the ligament being inserted only in their interstices4 ,shell thin1 very delicate1 irregular1 valves flattened1 foliaceous1 sub-rhomboidal1 sub-equivalve2 hinge longitudinal1 dorsal1 without teeth2 ligament sub-multiple1 and inserted in a series of rounded cavities corresponding with the dorsal margin2 one sub-central muscular impression4 ,crenatula avicularis4 ,c4 modiolaris4 ,c4 nigrina4 ,c4 bicostalis4 ,c4 viridis4 ,c4 mytiloides4 ,c4 phasianoptera4 ,c4 avicularis4 ,the avicular ,crenatula4 ,pl4 #ad1 fig4 #b4 ,answers to the above description4 ,c4 mytiloides4 ,the muscle-shaped ,crenatula4 ,oblong1 ovate1 oblique2 base acute2 violet coloured1 with obscure radiations4 #b4 ,perna4 ,ten species4 ,in speaking of the ,crenatula1 we gave the characteristic distinction1 which regarded it natural and expedient to make the ,perna form a different genus4 ,shell irregular1 very compressed1 foliaceous1 sub-equivalve1 rather variable form1 gaping at the anterior part of the lower extremity2 summit very small1 hinge straight1 vertical1 without teeth2 ligament multiple1 and inserted in a series of longitudinal parallel furrows4 ,perna ephippium4 ,p4 obliqua4 ,p4 isognomon4 ,p4 avicularis4 ,p4 femoralis4 ,p4 canina4 ,p4 marsupiom4 ,p4 sulcata4 ,p4 vulsella4 ,p4 nucleus4 ,p4 femoralis4 ,the femoral ,perna4 ,pl4 #ad1 fig4 #a4 ,species elongated1 and with appendages like ears4 ,p4 vulsella4 ,the tweezer ,perna4 ,species elongated1 without earlike appendages1 or having very small ones4 ,p4 ephippium4 ,the saddle ,perna4 ,species round1 compressed1 very pearly in the interior2 very slightly1 if at all1 auricled2 margin acute2 exterior purplish brown4 #c4 ,malleus4 ,the ,hammer4 ,six species4 ,a shell of a singular form1 resembling a pickaxe1 found only in the ,indian and ,australian ,seas2 there are two species1 the white and the black1 both of which1 when in fine preservation1 are highly esteemed1 but the white is more rare and valuable4 ,shell sub-nacreous1 irregular1 rugged1 sub-equivalve1 inequilateral1 generally auricled before and prolonged behind1 so as to be in form like a hammer2 summit entirely anterior2 between them and the inferior auricle1 an oblique cut or slope for the passage of the byssus2 hinge linear1 elongated1 without teeth2 ligament simple1 triangular1 inserted in a conical oblique cavity1 partly exterior2 one rather large sub-central muscular impression4 ,malleus albus4 ,m4 vulgaris4 ,m4 normalis4 ,m4 vulsellatus4 ,m4 anatinus4 ,m4 decurtatus4 ,m4 vulgaris4 ,the common ,malleus4 ,pl4 #ad1 fig4 #d4 ,species with two earlike appendages2 trilobate1 colour blackish brown4 ,m4 albus4 ,the white ,malleus4 ,species trilobate2 base of the lateral lobe prolonged1 without a sinus2 the base and the pit of the ligament not distinct2 colour white1 with transverse undulations4 ,m4 vulsellatus4 ,the tweezer ,malleus4 ,species slightly auricled4 ,m4 normalis4 ,the square ,malleus4 ,species without earlike appendages4 #d4 ,avicula4 ,thirteen species4 ,remarkable for the form of its shell1 which resembles1 when partially expanded1 a bird flying4 ,shell foliaceous or not1 thin and very fragile1 always pearly1 sub-equivalve2 form sub-regular1 but rather variable2 summit anterior2 valves oblique1 the left one with a little notch1 through which the byssus passes2 sometimes unequally and obliquely auricled2 hinge linear1 toothless1 or with two small rudimentary teeth2 ligament more or less exterior1 placed in a narrow groove1 sometimes enlarged towards the summit2 one very large posterior muscular impression2 and one very small anterior4 ,avicula macroptera4 ,a4 lotorium4 ,a4 semi-sagitta4 ,a4 heteroptera4 ,a4 falcata4 ,a4 crocea4 ,a4 ,tarentina4 ,a4 ,atlantica4 ,a4 squamulosa4 ,a4 papilionacea4 ,a4 costellata4 ,a4 physoides4 ,a4 virens4 ,a4 macroptera4 ,the rounded ,avicula4 ,pl4 #ad1 fig4 #c4 ,species oval1 oblique1 the earlike appendages very developed1 especially the superior2 one tooth at the hinge4 ,a4 ,atlantica4 ,the ,atlantic ,avicula4 ,obliquely curved1 yellowish fawn colour1 with dark reddish-brown stains2 interior pearly4 #e4 ,meleagrina4 ,two species4 ,the form of the shell is orbicular and equivalve1 without the elongated transverse base on the cardinal tooth1 and the sloping sides of the opening for the passage of the byssus are perceptible on both valves2 these peculiarities distinguish it from the ,avicula4 ,shell sub-equivalve1 rotundate1 nearly square1 externally squamose2 the inferior cardinal margin straight1 not caudate anteriorly2 a sinus at the posterior base of the valves for the passage of the byssus2 the left valve being at this place narrow and channelled2 hinge linear1 without teeth4 ,meleagrina margaritifera4 ,meleagrina albina4 ,m4 margaritifera4 ,the pearl-bearing ,meleagrina1 sometimes called the mother-of-pearl oyster4 ,species slightly oblique1 somewhat square1 pearly1 very thick1 compressed2 undulated and transversely striated1 with a series of lamellated longitudinal scales2 exterior greenish1 interior pearly4 ,this shell is celebrated for its irridescent colours1 and is valued for the beautiful and costly pearls it produces4 ,these pearls are formed from a deposition of the substance destined to line the shell upon sand or other bodies1 casually or purposely introduced within the mantle of the animal2 the shell itself is the mother-of-pearl used for inlaying1 or making various elegant trinkets4 ,,family ,,xviii4 ,,pectinides4 ,seven genera4 #a4 ,pedum4 ,the ,shepherd's ,crook4 ,one species4 ,the common name was given to this genus from the resemblance to a ,french shepherd's crook4 ,the shell is of a regular form2 its lower valve1 in which is a sinus for the byssus1 is turned up at the edges1 and the upper valve falls within it4 ,shell inequivalve1 a little eared2 apices unequal1 distant1 rounded1 little evident2 hinge without teeth2 ligament inserted in an oblique groove1 prolonged to the summit1 and carried within in a kind of spoonlike cavity4 ,p4 spondyloideum4 ,the spondylus-shaped ,pedum4 ,pl4 #ae1 fig4 #e4 ,ovate1 wedge shaped1 flat2 superior valve with longitudinal stri2 white1 granulated1 and rough2 slightly tinged with purple near the beak4 #b4 ,lima4 ,the ,file ,shell4 ,six species4 ,no sinus or notch2 the valves1 thick and gaping1 form a lateral opening2 the ears are small1 but distinct4 ,shell oval1 more or less oblique1 almost equivalve1 with small ears1 regularly gaping at the anterior part of the lower edge2 summits anterior and distant2 hinge longitudinal1 without teeth2 ligament rounded1 almost exterior1 inserted in a cavity of each valve2 central muscular impression divided into three very distinct parts4 ,lima inflata4 ,l4 squamosa4 ,l4 glacialis4 ,l4 annulata4 ,l4 fragilis4 ,l4 linguatula4 ,l4 squamosa4 ,the scaly ,lima4 ,pl4 #ae1 fig4 #c4 ,answers to the above description1 with valves ventricose1 armed with vaulted scales4 ,l4 fragilis4 ,the fragile ,lima4 ,oblong ovate1 very pellucid1 delicately white1 with longitudinal distinct stri2 lower margin denticulated1 closely interlocking when the valves are closed4 #c4 ,pecten4 ,the ,scallop4 ,fifty-nine species4 ,the shells constituting this genus are found in all seas2 they are well known1 and many of them are very beautiful4 ,the form is usually regular2 their surface is adorned with elevated divergent ribs1 varying in number from five to thirty1 proceeding from the beaks and terminating at the margins in a scalloped outline4 ,some are equivalve1 others have one valve flat and the other convex2 the colours of the upper valve are brighter than those of the lower4 ,there is considerable variation in the size and form of the ears1 which in some species are equal or nearly so1 but in others are unequal2 some are so small as to be nearly indistinct4 ,the ribs are variously diversified with beautiful colours and delicate checker-work2 the margins are mostly crenated1 and oftentimes beautifully coloured4 ,these shells were formerly worn by ,pilgrims on their hat or coat1 as a mark of having been to the holy shrine in ,palestine4 ,shell free1 regular1 thin1 solid1 auricled1 equivalve1 equilateral2 summits contiguous2 hinge without teeth2 a ligamental membrane through all the length of the hinge1 besides a short1 thick ligament1 almost entirely internal1 which fills a triangular cavity under the summits2 one sub-central muscular impression4 ,pecten maximus4 ,p4 medius4 ,p4 ,jacobus4 ,p4 bifrons4 ,p4 ziczac4 ,p4 ,latirentii4 ,p4 rastellum4 ,p4 turgidus4 ,p4 flagellatus4 ,p4 aspersus4 ,p4 flavidulus4 ,p4 plica4 ,p4 pleuronectes4 ,p4 obliteratus4 ,p4 ,japonicus4 ,p4 ,magellanicus4 ,p4 purpuratus4 ,p4 lineolaris4 ,p4 radula4 ,p4 nodosus4 ,p4 pallium4 ,p4 pes-felis4 ,p4 tigris4 ,p4 imbricatus4 ,p4 histrionicus4 ,p4 sauciatus4 ,p4 opercularis4 ,p4 asperrimus4 ,p4 senatorius4 ,p4 aurantius4 ,p4 florens4 ,p4 varius4 ,p4 sanguineus4 ,p4 sinuosus4 ,p4 ornatus4 ,p4 glaber4 ,p4 sulcatus4 ,p4 virgo4 ,p4 unicolor4 ,p4 griseus4 ,p4 distans4 ,p4 ,isabella4 ,p4 lineatus4 ,p4 flabellatus4 ,p4 irradians4 ,p4 flexuosa4 ,p4 dispar4 ,p4 quadriradiatus4 ,p4 ,islandicus4 ,p4 inflexus4 ,p4 pellucidus4 ,p4 ,tranquebaricus4 ,p4 gibbus4 ,p4 miniaceus4 ,p4 pusio4 ,p4 hybridus4 ,p4 sulphureus4 ,p4 lividus4 ,p4 glaber4 ,the glabrous ,scallop4 ,pl4 #ae1 fig4 #d4 ,species of which the two valves are ribbed and almost equally convex1 the right a little less1 and having its inferior ear less broad than the left1 so as to produce a kind of groove for the passage of the byssus4 ,p4 ,jacobus4 ,the scallop of ,st4 ,james4 ,species very inequivalve2 the left valve being very flat1 the right convex2 ears equal4 ,p4 pleuronectes4 ,the sole ,scallop4 ,species equivalve1 not closing2 surface smooth and ribbed within2 one valve perfectly white1 the other of a brownish or reddish colour4 #d4 ,plagiostoma4 ,ten fossil species4 ,only known as fossils2 probably introduced here by ,lamarck to serve as a connecting link for the genera ,lima1 ,pecten1 ,spondylus1 and ,podopsis4 ,shell rather thick1 regular1 free1 sub-equivalve1 sub-auriculated2 the two valves almost equally convex1 both provided with a distinct summit1 recurved in the middle of a level surface1 with a great triangular slope in the middle2 the cardinal base transverse1 straight2 hinge without teeth2 a conical cardinal pit situated below the beak1 partly internal1 opening outward1 and receiving the ligament4 ,p4 spinosa4 ,the thorny ,plagiostoma4 ,subarcuated1 the umbo of one shell higher than that of the other1 with longitudinal ribs and remote concentric rings4 #e4 ,plicatula4 ,five species4 ,separated from the ,spondylus of ,linnus on account of its distinct structure4 ,the ligament is altogether internal2 it is without ears1 and the prolonged beak so conspicuous in that genus4 ,the ,plicatula has the faculty of affixing itself to another body1 so that many are found grouped together in clusters4 ,the valves are strongly plaited within and without1 closely interlocking with each other4 ,shell solid1 adhering1 sub-irregular1 without ears1 inequivalve1 pointed at the summit1 rounded and plaited behind2 hinge with two strong teeth in each valve1 with a cavity between them1 in which the ligament is internally inserted4 ,plicatula ramosa4 ,p4 depressa4 ,p4 cristata4 ,p4 reniformis4 ,p4 ,australis4 ,p4 ramosa4 ,the branched ,plicatula4 ,pl4 #ae1 fig4 #b4 ,oblong1 trigonal1 very thick2 strong longitudinal plaits2 exterior brown1 with a yellow tinge1 with reddish arrow-shaped markings2 interior white4 #f4 ,spondylus4 ,the thorny ,oyster4 ,twenty-one species4 ,the valves of this genus greatly resemble those of the common oyster1 but have ears1 and are covered with long recurved or straight-pointed spines4 ,the lower valve is much larger than the upper1 and has foliaceous lamin1 by which it is attached to the other substances4 ,they are found in all seas of hot countries1 but particularly in the ,indian2 they adhere to rocks1 coral1 c41 oftentimes in large groups4 ,the usual colours are red1 purple1 white1 brown1 or orange1 several of which are sometimes blended in the same shell4 ,shell solid1 adhering1 sub-regular1 more or less spined1 sub-auriculated1 inequivalve2 the right or inferior valve fixed1 much more excavated than the other1 and having behind1 at the summit1 a triangular face1 which enlarges and elongates with age2 hinge longitudinal1 provided in each valve with two strong teeth entering into corresponding cavities2 ligament short1 almost medial1 partly exterior2 one sub-dorsal1 muscular impression4 ,spondylus gdaropus4 ,s4 ,americanus4 ,s4 arachnoides4 ,s4 candidus4 ,s4 multilamellatus4 ,s4 coccineus4 ,s4 crassisquama4 ,s4 spathuliferus4 ,s4 ducalis4 ,s4 longitudinalis4 ,s4 costatus4 ,s4 variegatus4 ,s4 longispineus4 ,s4 regius4 ,s4 avicularis4 ,s4 microlepos4 ,s4 croceus4 ,s4 aurantius4 ,s4 radians4 ,s4 zonalis4 ,s4 violacescens4 ,s4 gdaropus4 ,the thorny red ,spondylus4 ,pl4 #ae1 fig4 #a4 ,upper valve red1 under one white1 with longitudinal stri or ribs2 rough granulations1 and somewhat tongue-shaped2 rather short truncated spines4 ,s4 longispineus4 ,the long-spined ,spondylus4 ,thickly spined1 longitudinally sulcated and ribbed2 alternate spines arcuated and tongue-shaped2 valves of a reddish colour2 umbones orange4 #g4 ,podopsis4 ,two fossil species4 ,only introduced here to fill up the family and keep up the chain of connexion4 ,it approximates the genus ,gryphea4 ,shell rather thick1 sub-regular1 symmetrical1 equilateral1 inequivalve1 adhering by the extremity of the shorter valve2 the other terminated by a summit pointed1 a little recurved and medial2 articulation very angular1 by means of two very distant condyles4 ,,family ,,xix4 ,,ostracea4 ,six genera4 #a4 ,grypha4 ,one species4 ,this genus resembles the ,ostrea1 with which it was formerly classed1 but from which it is distinguished by the peculiar character of the lower valve4 ,it is very deep and carinated1 with a summit terminating in a long spirally recurved beak1 slightly turned to one side2 the edge sharp and angular4 ,it is seldom1 if ever1 attached to other bodies4 ,shell more finely lamellated than that of the oyster1 free or slightly adherent1 sub-equilateral1 very inequivalve2 the lower valve very concave1 with a summit more or less recurved like a hook2 the upper valve much smaller1 and formed like a lid2 hinge without teeth2 ligament inserted in an oblong arched cavity2 one single muscular impression on each valve4 ,g4 angulata4 ,the angulated ,grypha4 ,pl4 #af1 fig4 #b4 ,oblong ovate1 with three long longitudinal carinated ribs below2 summit of the inferior valve is subvolute4 ,this is a rare shell4 #b4 ,ostrea4 ,the ,oyster4 ,forty-eight species4 ,as given by ,lamarck1 is a natural and well-defined family4 ,it is too well known to require description4 ,it fixes itself to other bodies by the lamin of the whole surface of one valve1 and generally remains immoveable1 exhibiting no other signs of life other than that of opening its valves to receive nutriment4 ,shell irregular1 inequivalve1 inequilateral1 exterior roughly foliaceous1 interior somewhat pearly2 the left or inferior valve larger1 deeper1 and adhesive1 its summit prolonging with age in a sort of heel1 the right or superior valve smaller1 more or less in the form of a lid2 hinge without teeth2 ligament short1 sub-interior1 inserted in an oblong cardinal cavity1 increasing with the summit2 muscular impression single and sub-central4 ,ostrea edulis4 ,o4 hippopus4 ,o4 borealis4 ,o4 ,adriatica4 ,o4 cochlear4 ,o4 cristata4 ,o4 gallina4 ,o4 numisma4 ,o4 lingua4 ,o4 tulipa4 ,o4 ,brisiliana4 ,o4 scabra4 ,o4 rostralis4 ,o4 parasitica4 ,o4 denticulata4 ,o4 spathulata4 ,o4 cornucopi4 ,o4 cucullata4 ,o4 doridella4 ,o4 rubella4 ,o4 limacella4 ,o4 ruscuriana4 ,o4 ,virginica4 ,o4 ,canadensis4 ,o4 excavata4 ,o4 mytiloides4 ,o4 sinuata4 ,o4 trapezina4 ,o4 tuberculata4 ,o4 rufa4 ,o4 margaritacea4 ,o4 gibbosa4 ,o4 ,australis4 ,o4 elliptica4 ,o4 haliotida4 ,o4 deformis4 ,o4 fucorum4 ,o4 plicatula4 ,o4 glaucina4 ,o4 fusca4 ,o4 turbinata4 ,o4 crista-galli4 ,o4 erucella4 ,o4 folium4 ,o4 labrella4 ,o4 imbricata4 ,o4 hyotis4 ,o4 radiata4 ,o4 edulis4 ,the eatable ,oyster4 ,pl4 #af1 fig4 #e4 ,species orbicular1 and not plaited2 rugged1 with undulated1 imbricated scales2 one valve flat and the other convex2 variable in size2 outside greenish brown1 inside pearly white1 sometimes with a bluish tinge4 ,o4 ,virginica4 ,the ,virginian ,oyster4 ,species longitudinal and not plaited4 ,o4 imbricata4 ,the imbricated ,oyster4 ,species orbicular and plaited4 ,o4 crista-galli4 ,the ,cock's-comb ,oyster4 ,species strongly plaited longitudinally4 #c4 ,vulsella4 ,the ,tweezers4 ,six species4 ,this genus has several characteristics which distinguish it from the ,ostrea2 they are free2 the valves and the apices are nearly equal1 with a projecting callosity on each valve1 depressed underneath1 and obliquely arched for the reception of the ligament4 ,shell sub-nacreous1 sub-regular1 sub-equivalve1 inequilateral2 upper valve finely granulated1 or striated longitudinally from the apex to the margin2 summits anterior1 distant1 recurved below2 hinge without teeth2 ligament undivided1 thick1 inserted in a rounded cavity1 made in a slightly projecting callosity on each valve2 muscular impression sub-central1 rather large1 and two very small ones entirely anterior4 ,v4 lingulata4 ,the tongue-like ,vulsella4 ,pl4 #ae1 fig4 #f4 ,elongated1 depressed1 transversely striated2 pale yellowish brown1 with longitudinal darker stripes4 #d4 ,placuna4 ,the ,chinese ,window ,shell4 ,three species4 ,this genus received its common name from the thin1 transparent nature of the valves of the shell1 particularly of the species placenta1 which by the ingenious ,chinese are often polished and used as a substitute for window-glass4 ,the hinge of the shells of this genus is so peculiar as to make it perfectly distinct2 entirely interior1 fastened by a ligament shaped like a ,v on one of the valves4 ,shell free1 sub-irregular1 very thin1 almost entirely transparent1 flat1 sub-equivalve1 sub-equilateral1 slightly auricled2 hinge entirely internal1 formed on the superior less valve by two elongated1 unequal1 oblique ribs converging at the summit1 to the interior side of which a ligament like the letter ,v is inserted in two equally converging1 rather deep cavities of the lower valve1 which is more convex2 one rather small1 sub-central muscular impression4 ,p4 placenta4 ,the glassy ,placuna4 ,pl4 #af1 fig4 #c4 ,sub-orbicular1 flat1 white1 and transparent2 finely striated longitudinally1 slightly decussated4 #e4 ,anomia4 ,the ,antique ,lamp4 ,six species4 ,when ,linnus formed this genus and named it ,anomia1 he probably did so from its having no determinate character4 ,its common name was given it by the fancied resemblance of some of its species to an antique lamp4 ,like the oyster1 they seldom leave their place2 they are always affixed to marine bodies by an osseous operculum1 formed by the thick extremity of the animal's muscle4 ,the lower valve is perforated and smaller1 conforming to the shape of the substance to which it is affixed4 ,shell adhering1 irregular1 inequivalve1 inequilateral1 ostraceous2 inferior valve rather more flat than the superior1 divided at the summit into two sloping branches1 whose approaching together forms a large oval hole1 through which protrudes a muscle1 the extremity of which becomes ossified and adheres to extraneous bodies2 one sub-central muscular impression divided into three4 ,anomia ephippium4 ,a4 patellaris4 ,a4 cepa4 ,a4 electrica4 ,a4 pyriformis4 ,a4 fornicata4 ,a4 membranacea4 ,a4 squamula4 ,a4 lens4 ,a4 ephippium4 ,the ,saddle ,anomia4 ,pl4 #af1 fig4 #a4 ,shell sub-orbicular1 irregularly wrinkled and waved2 upper valve convex1 under flat and perforated at the hinge1 through which passes the ligament by which it is affixed to other bodies2 inside pearly1 and of various changing colours1 such as green1 purple1 violet1 and yellow4 #f4 ,crania4 ,the ,scull4 ,one species4 ,so called from the appearance caused by three holes or cavities on the surface of the lower valve4 ,shell irregular1 orbicular1 inequivalve2 the inferior valve almost flat1 and marked on the interior with four muscular impressions1 sometimes very deep1 and of which the two sub-central are sufficiently connected to form but one2 the superior valve like a ,patella1 more or less convex1 with four very distinct muscular impressions1 rather distant4 ,c4 personata4 ,the masked ,crania4 ,pl4 #af1 fig4 #d4 ,orbicular2 upper valve gibbous and conical1 lower valve flat1 with three perforations4 ,,family ,,xx4 ,,brachiopoda4 ,three genera4 #a4 ,orbicula4 ,one species4 ,greatly resembling a ,patella1 for which it is often mistaken on account of the lower valve being very thin1 flat1 and adhering4 ,shell sub-orbicular1 very compressed1 inequilateral1 very inequivalve2 the inferior valve very thin1 adherent1 and imperforated2 the superior valve like a ,patella1 with a summit more or less inclined towards the posterior side4 ,o4 ,norwegica4 ,the ,norwegian ,orbicula4 ,pl4 #ag1 fig4 #d4 ,upper valve in the form of a depressed cone1 with a summit produced and pointed4 #b4 ,terebratula4 ,twelve species4 ,taken from the ,anomia1 and with great propriety1 as its characteristic differences are very great2 the perforation of the ,anomia is always in the smaller valve1 which is attached to the larger by a cardinal ligament1 while in the ,terebratula the perforation is always in the larger valve1 which is connected to the smaller by teeth at the hinge4 ,in some the valves are smooth1 and in others grooved longitudinally4 ,shell thin1 equilateral1 sub-triangular1 inequivalve2 one of the valves larger and more convex than the other1 prolonged behind by a sort of heel1 sometimes recurved1 and pierced by a round hole at its extremity2 frequently sloped more or less by a cleft of variable form2 the opposite valve smaller1 more flat1 sometimes formed like a lid1 having in the interior a system of support variable in form and complication in every true species2 hinge limited1 prominent1 and formed by two articulating surfaces of one valve placed between corresponding projections of the other2 a kind of tendinous ligament issuing from the sloping cleft of the shell1 by which it is attached to marine bodies4 ,terebratula vitrea4 ,t4 dilatata4 ,t4 rotunda4 ,t4 flavescens4 ,t4 dentata4 ,t4 dorsata4 ,t4 pisum4 ,t4 globosa4 ,t4 sanguinea4 ,t4 caput-serpentis4 ,t4 truncata4 ,t4 psittacea4 ,t4 dorsalis4 ,the dorsal ,terebratula4 ,pl4 #ag1 fig4 #a4 ,the summit of the large valve pierced with a round hole1 very circumscribed2 grooved longitudinally2 valves as if cut sloping in the middle line4 ,t4 globosa4 ,the globose ,terebratula4 ,species smooth1 with the valves rounded at their anterior edge4 ,t4 caput serpentis4 ,the ,serpent's-head ,terebratula4 ,species grooved1 with the summit or heel of the large valve deeply hollowed even to the edge of the articulation2 the slope rounded2 the valves sub-bilobate by the apparent slope of the anterior edge4 #c4 ,lingula4 ,one species4 ,the valves of this genus are united by means of a tubular1 fleshy1 or membranous peduncle surrounding the narrow part of them1 and of which the base is affixed to marine substances4 ,shell covered with epidermis1 sub-equivalve1 equilateral1 depressed1 elongated1 truncated anteriorly1 summit middle and posterior1 without trace of ligament1 but supported at the extremity of a long fibro-gelatinous peduncle1 which attaches it vertically to sub-marine bodies2 multiple muscular impression4 ,l4 anatina4 ,the ,duck's-bill ,lingula4 ,pl4 #ag1 fig4 #b4 ,covered with a green1 shining epidermis1 shaped like a duck's bill1 and having a cylindrical peduncle4 ,,class ,,iv4 ,,mollusca4 ,,twenty-,,two ,,families4 ,,family ,i4 ,,pteropoda4 ,six genera ,some genera of this family are without a testaceous covering1 and are mentioned only for the sake of preserving the family entire4 #a4 ,hyala4 ,venus's ,chariot4 ,two species4 ,this genus derives its common name from a fancied resemblance to a miniature triumphal car4 ,shell very thin1 transparent1 symmetrical1 convex below1 flat above1 valves unequal1 form tricuspidated1 cleft at the sides1 open like a cleft anteriorly1 and tridentated posteriorly2 summit truncated4 ,hyala tridentata4 ,hyala cuspidata4 ,h4 tridentata4 ,the three-toothed ,hyala4 ,transparent1 horn-coloured1 globular2 tridentated posteriorly2 summit and two posterior sides open2 finely striated transversely4 #b4 ,clio4 ,has no ,shell4 ,two species4 ,clio ,borealis4 ,clio ,australis4 #c4 ,cleodora4 ,two species4 ,shell gelatinous1 cartilaginous1 transparent1 in shape of a reversed pyramid or lanceolate truncated1 only open at the summit4 ,cleodora pyramidata4 ,cleodora caudata4 ,c4 pyramidata4 ,the pyramidal ,cleodora4 ,like a pyramid1 triangular1 thin1 transparent2 aperture obliquely truncated4 #d4 ,limacina4 ,one species4 ,shell papyraceous1 very fragile1 planorbis form1 sub-carinated1 involuted rather obliquely1 in such a manner as to be deeply and largely umbilicated on one side1 and the spine slightly projecting and pointed on the other2 aperture large1 entire4 ,l4 helicialis4 ,the ,helix-like ,limacina4 ,thin1 fragile1 spiral2 the volutions united in a discoid form4 #e4 ,cymbulia4 ,the ,slipper4 ,one species4 ,shell or case cartilaginous1 transparent1 conical posteriorly where the animal adheres1 and prolonged above like a long hollow semi-cylinder1 under which the animal can take shelter4 ,c4 ,peronii4 ,peron's ,cymbulia4 ,shell shaped like a shoe1 somewhat gelatinous or cartilaginous1 very transparent crystalline1 oblong pointed at the vertex1 truncated at the base4 #f4 ,pneumodermon4 ,has no shell4 ,one species4 ,p4 ,peronii4 ,,family ,,ii4 ,,phyllidiacea4 ,four genera4 #a4 ,phyllidia4 ,three species4 ,the animals of this genus are covered with a coriaceous skin1 but without a shell4 ,phyllidia varicosa4 ,p4 pustulosa4 ,p4 ocellata4 #b4 ,chitonellus4 ,two species4 ,formerly classed with the ,chiton2 but as the testaceous plates of this genus are never joined1 the two may be easily distinguished4 ,shell elongated1 multivalve2 alternate pieces generally longitudinal2 sides naked4 ,chitonellus striatus4 ,chitonellus larvformis4 ,c4 striatus4 ,the striated ,chitonellus4 ,stri radiating from the apex of each valve2 margin serrated2 base of the last valve obtuse4 ,c4 larvformis4 ,the ,caterpillar ,chitonellus4 ,more or less cylindrical1 almost naked2 the valves of the shell very small1 and almost entirely concealed under the skin2 tufts hairy or silky between the parts of the valves near the margin4 #c4 ,chiton4 ,six species4 ,this genus was so called from the resemblance of its testaceous covering to a coat of mail4 ,the form of the ,chiton is very similar to a well-known insect called the woodlouse1 found in decayed timber2 it generally adheres to rocks1 or lies rolled up like a ball among seaweed and stones4 ,in length it seldom exceeds an inch1 except in tropical climates1 where they are sometimes three or four inches long4 ,in general there are eight valves1 the termination of which is surrounded by a scaly or rough ligament1 which enables the animal to expand or contract its shell freely4 ,it presents a great variety of colour2 in general it is dark brown1 overcast with a shade of green1 but some are beautifully variegated with pink1 yellow1 blue1 or red2 interior green or whitish4 ,shell more or less elongated1 consisting of a longitudinal series of eight very symmetrical calcareous pieces1 more or less curved1 and round at both extremities2 summit more or less marked1 and when imbricated1 always from front to rear4 ,chiton gigas4 ,c4 squamosus4 ,c4 ,peruvianus4 ,c4 spinosus4 ,c4 fascicularis4 ,c4 marginatus4 ,c4 squamosus4 ,the scaly ,chiton4 ,pl4 #a1 fig4 #a4 ,depressed1 valves large1 carinated1 well imbricated2 the interstices offering well-marked lateral spaces2 the border of the mantle regularly scaly4 ,c4 marginatus4 ,the marginated ,chiton4 ,pl4 #a1 fig4 #b4 ,valves carinated and projecting over each other2 finely shagreened1 with a dusky reddish-brown margin4 ,c4 fascicularis4 ,the fasciculated ,chiton4 ,pl4 #a1 fig4 #c4 ,valves more narrow1 imbricated1 without distinct spaces2 lateral parts of the skin naked or hairy1 but always provided with silky or hairy tufts disposed in pairs between the junctions of the valve4 ,c4 spinosus4 ,the spiny ,chiton4 ,pl4 #a1 fig4 #d4 ,shell beset with long1 thin1 curved1 tubular1 hairy1 blackish spines4 #d4 ,patella4 ,the ,limpet or ,dishlike ,shell4 ,forty-five species4 ,the ,patella of ,linnus was divided by ,lamarck into several distinct genera1 and now comprehends only such shells as are of a conical form1 with an imperforated summit4 ,the anterior is that part to which the summit inclines1 and is always more narrow than the posterior part4 ,it derives its name from its resemblance to a little dish2 the colour and structure are various2 some are smooth1 others granulated1 and many are covered with elevated tuberculated ribs4 ,the exterior is sometimes of a pale fawn colour1 and the interior of a bright pink2 some have a silvery hue1 but the more general colour is bluish white or light brown4 ,this genus of shells is very numerous in all seas1 but chiefly in hot countries1 where they are found of a larger size2 they generally adhere by their base to rocks1 stones1 and marine substances1 from which it is difficult to detach them4 ,shell oval or circular1 sub-conic2 summit right or more or less recurved anteriorly2 the cavity simple1 entire1 more or less deep2 the margin complete and entirely horizontal2 a narrow muscular impression4 ,patella apicina4 ,p4 granatina4 ,p4 oculus4 ,p4 barbara4 ,p4 plicata4 ,p4 laciniosa4 ,p4 saccharina4 ,p4 angulosa4 ,p4 barbata4 ,p4 longicosta4 ,p4 spinifera4 ,p4 aspera4 ,p4 luteola4 ,p4 pyramidata4 ,p4 umbrella4 ,p4 plumbea4 ,p4 crulea4 ,p4 radians4 ,p4 scutellaris4 ,p4 viridula4 ,p4 pectinata4 ,p4 ,galathea4 ,p4 ,safiana4 ,p4 testudinaria4 ,p4 cochlear4 ,p4 compressa4 ,p4 granularis4 ,p4 decaurata4 ,p4 ,magellanica4 ,p4 stellifera4 ,p4 vulgata4 ,p4 mammillaris4 ,p4 lineata4 ,p4 leucopleura4 ,p4 notata4 ,p4 ,tarentina4 ,p4 punctata4 ,p4 puncturata4 ,p4 ,javanica4 ,p4 tuberculifera4 ,p4 miniata4 ,p4 pellucida4 ,p4 tricostata4 ,p4 ,australis4 ,p4 cymbularia4 ,p4 vulgata4 ,the common ,patella4 ,pl4 #b1 fig4 #a4 ,conic1 summit obtuse and vertical2 sometimes ribbed from the vertex to the margin with divergent stri1 sometimes striated without ribs2 exterior dark brown or greenish1 internal blue or purple radiations4 ,p4 compressa4 ,the compressed or flat-sided ,patella4 ,pl4 #b1 fig4 #b4 ,oval1 elongated1 compressed on the sides1 having the summit sub-anterior1 well marked1 and curved2 exterior fawn colour1 interior of a silvery hue4 ,p4 deaurata4 ,the golden red ,patella4 ,pl4 #b1 fig4 #c4 ,sub-conic1 summit more anterior1 with a slight forward inclination2 colour yellowish red4 ,p4 cochlear4 ,the spoonlike ,patella4 ,pl4 #b1 fig4 #d4 ,depressed1 the summit hardly marked1 and much more narrow in front than behind2 exterior brownish1 interior light blue4 ,p4 scutellaris4 ,the buckler ,patella4 ,pl4 #b1 fig4 #e4 ,depressed1 summit sub-anterior1 radiated from the summit to the margin2 brown colour1 with a yellowish band parallel to the margin4 ,p4 pectinata4 ,the pectinated ,patella4 ,pl4 #b1 fig4 #f4 ,oval1 summit well marked and anteriorly inclined2 ribbed from the summit to the margin1 which is slightly convex in the middle4 ,p4 cymbularia4 ,the cymbular ,patella4 ,pl4 #b1 fig4 #g4 ,oval1 thin1 pearly1 with a festooned margin2 summit nearly marginal2 colour white1 shaded with very light brown4 ,,family ,,iii4 ,,calyptracea4 ,seven genera4 ,the genera that constitute this family were separated by ,lamarck from the ,patella of ,linnus4 #a4 ,parmaphora4 ,the ,duck's-bill ,limpet4 ,three species4 ,the characteristic distinctions of this shell were first pointed out by ,de ,blainville4 ,shell elongated1 very depressed2 the summit greatly post-medial1 and evidently inclined behind2 aperture as large as the shell2 the lateral edges straight and parallel1 the posterior rounded1 the anterior sharp and notched in the middle2 muscular impression large1 elongated oval1 slightly open in front4 ,parmophora ,australis4 ,p4 brevicula4 ,p4 granulata4 ,p4 ,australis4 ,the ,australian ,parmophorus4 ,shell oblong1 depressed2 vertex slightly recurved2 striated concentrically2 one margin rounded1 and the other truncated4 #b4 ,emarginula4 ,the ,slit ,limpet4 ,four species4 ,most of the shells of this genus are small2 some are elevated1 and others of a widely-depressed conical form4 ,shell conical1 recurved2 summit entire2 slit1 or more or less hollowed on the anterior side2 a muscular impression in form of a horseshoe1 open behind and thicker at the beginning4 ,emarginula ,blainvillii4 ,e4 marginata4 ,e4 fissura4 ,e4 rubra4 ,e4 ,blainvillii4 ,blainville's ,emarginula4 ,shell with the notch or slit in the middle of the back1 and not extending to the margin4 ,e4 fissura4 ,the slit ,emarginula4 ,pl4 #cb1 fig4 #e4 ,oval1 compressed1 summit well marked1 with reticulated stri and ribs2 fissure extending half way from the margin to the summit2 exterior light brown1 interior white4 ,e4 marginata4 ,the marginated ,emarginula4 ,more compressed than the preceding2 summit distinct1 anterior margin formed like a gutter4 #c4 ,fissurella4 ,the ,keyhole ,limpet4 ,nineteen species4 ,the perforation not being perfectly round1 but generally ovate oblong1 procured for this genus its common name1 by which it is easily distinguished4 ,shell simple1 conical1 depressed1 recurved2 summit perforated a little anterior in an oblong or oval manner1 like a keyhole2 the exterior surface ribbed longitudinally1 slightly striated transversely4 ,fissurella picta4 ,f4 nimbosa4 ,f4 crassa4 ,f4 ,grca4 ,f4 nodosa4 ,f4 ,cayennensis4 ,f4 lilacina4 ,f4 rosea4 ,f4 ,barbadensis4 ,f4 radiata4 ,f4 viridula4 ,f4 hiantula4 ,f4 pustula4 ,f4 fascicularis4 ,f4 ,javanicensis4 ,f4 depressa4 ,f4 ,peruviana4 ,f4 gibberula4 ,f4 minuta4 ,f4 nimbosa4 ,the scaly-ribbed ,fissurella4 ,species of which the middle part of the edges of the aperture is hollowed in such a manner that1 when placed on a level surface1 they touch only at the extremities4 ,f4 rosea4 ,the rosy ,fissurella4 ,species more depressed1 edges bent up lengthwise1 forming a kind of canal4 ,f4 ,grca4 ,the ,greek ,fissurella4 ,pl4 #cb1 fig4 #a4 ,conical1 ovate oblong2 stri cancellated and elevated2 sections tuberculated2 exterior yellowish brown or clouded1 interior white or light blue4 #d4 ,pileopsis4 ,the ,caplike ,limpet4 ,four species4 ,easily distinguished by its form1 which gave rise to the common name4 ,shell oblique1 sharp pointed2 cone bent forward1 with a recurved1 almost spiral summit1 finely striated longitudinally and slightly wrinkled transversely2 aperture a round oval2 the margin at the base nearly round1 more or less regularly crenated and indented1 interior with a lengthened1 arched1 transverse muscular impression4 ,pileopsis ungarica4 ,p4 mitrula4 ,p4 intorta4 ,p4 subrufa4 ,p4 ungarica4 ,the ,fool's ,cap4 ,conical1 vertex slightly spiral1 pointed1 and recurved2 exterior pale fawn colour1 and the outer margin bordered with a fringed epidermis2 interior sometimes of a very bright pink or rose colour4 #e4 ,calyptra4 ,the ,cup and ,saucer ,limpet4 ,four species4 ,this genus of shells is remarkable for having in the interior cavity a transverse funnel or tongue-shaped testaceous appendage1 from which originated its common name4 ,shell conic1 base orbicular2 summit vertical and imperforated2 cavity deep1 having at its interior summit a tongue-like appendage4 ,this appendage is sometimes vertical and sometimes like a horseshoe1 having on it a muscular impression of variable form4 ,calyptra extinctorium4 ,c4 lvigata4 ,c4 equestris4 ,c4 tectum-sinense4 ,c4 extinctorium4 ,the extinguisher ,calyptra4 ,species in which the internal appendage is horn-shaped2 colour brownish4 ,c4 equestris4 ,the equestrian ,calyptra4 ,pl4 #cb1 fig4 #d4 ,species in which the internal appendage is like a horseshoe1 open in front4 ,c4 tectum-sinense4 ,the ,chinese roof ,calyptra4 ,shell formed of separate1 transverse1 irregular round lamin of uniform size1 attached to each other by the summit on the exterior of each1 presenting the appearance of a number of small flat ,patell piled one on the other2 colour yellowish1 margin entire1 very glossy within4 #f4 ,crepidula4 ,the ,slipper ,limpet4 ,six species4 ,very similar to the ,navicella1 but distinguished from it by not having an operculum4 ,shell irregular1 form very variable1 depressed or compressed2 spire obliquely inclined to one side2 margin entire2 cavity large1 divided by a horizontal partition1 which gives it the form of a half-decked boat4 ,crepidula fornicata4 ,c4 porcellana4 ,c4 aculeata4 ,c4 unguiformis4 ,c4 dilatata4 ,c4 ,peruviana4 ,c4 porcellana4 ,the brown-spotted ,crepidula4 ,shell thick1 flat1 summit not spiral4 ,c4 aculeata4 ,the prickly ,crepidula4 ,oval1 brown1 roughly striated1 vertex recurved1 interior blue or purple4 ,c4 sub-spirata4 ,the sub-spiral ,crepidula4 ,pl4 #cb1 fig4 #b4 ,species almost round1 summit sub-spiral2 colour yellowish white1 with a bluish tinge towards the summit4 #g4 ,ancylus4 ,the ,lake ,limpet4 ,two species4 ,this is a fresh-water shell1 found in the lakes of ,europe4 ,shell thin and brittle1 obliquely conical2 summit pointed and recurved2 margins simple1 base oval and smooth4 ,ancylus oblongus4 ,ancylus fluviatilis4 ,a4 oblongus4 ,the oblong ,ancylus4 ,aperture elongated1 vertex turned to one side1 striated concentrically2 exterior pale yellowish colour1 interior light blue4 ,a4 fluviatilis4 ,the river ,ancylus4 ,pl4 #cb1 fig4 #c4 ,simple1 oval1 almost symmetrical2 summit pointed1 compressed1 very distinct2 bent back a little to the right1 but not marginal2 the edges of the aperture entire and effuse4 ,,family ,,iv4 ,,bullacea4 ,three genera4 #a4 ,acera4 ,has no shell4 ,one species4 ,acera ,carnosa4 #b4 ,bulla4 ,one species4 ,formerly classed with the ,bulla1 but separated from it on account of the shell being entirely covered by the animal1 and never externally visible4 ,shell oval1 thin1 fragile1 more or less involuted on one side1 rendering the aperture more or less wide4 ,b4 aperta4 ,the open ,bulla4 ,pl4 #ag1 fig4 #e4 ,shell interior and very incompletely involuted1 without spire or columella2 sub-orbicular1 white1 transparent1 faintly striated1 and slightly wrinkled2 almost entirely open4 #c4 ,bulla4 ,the ,bubble4 ,eleven species4 ,the great confusion that existed in this genus1 as classed by ,linnus1 has been elucidated by the division and classification of ,lamarck4 ,this genus derived its name from the resemblance which some of the smaller species have to a bubble of water4 ,its shells are found in almost all parts of the world4 ,shell external1 oval1 involuted2 aperture very large1 open the whole length of the shell1 and generally wider at the base2 outer edge sharp and smooth2 summit umbilicated4 ,bulla lignaria4 ,b4 ampulla4 ,b4 striata4 ,b4 naucum4 ,b4 physis4 ,b4 fasciata4 ,b4 aplustre4 ,b4 hydatis4 ,b4 cornea4 ,b4 fragilis4 ,b4 solida4 ,b4 aplustre4 ,the streamer-like ,bulla4 ,pl4 #ag1 fig4 #g4 ,species completely involute2 the spire very distinct1 visible1 but not projecting1 with a kind of thickening at the anterior part of the columellar edge4 ,b4 lignaria4 ,the woodlike ,bulla4 ,species sub-involute1 no visible spire either within or without1 but narrowed towards the top when it is slightly umbilicated2 yellowish brown colour1 with transverse pale stri4 ,b4 hydatis4 ,the watery ,bulla4 ,species more solid1 thicker1 almost entirely involute2 whorls of the spire slightly visible in an umbilicus projecting interiorly from the summit4 ,b4 naucum4 ,the sea-nut ,bulla4 ,species thin2 the whorls of the spire visible externally1 but without projection1 and with a suture as if caniculated without thickening at the anterior part of the columellar edge4 ,b4 fragilis4 ,the fragile ,bulla4 ,species very thin1 rather involute2 the whorls of the spire distinct within as without2 the suture deep1 angular1 and cleft in a greater or less part of its length4 ,,family ,v4 ,,aplysiacea4 ,two genera4 #a4 ,aplysia4 ,three species4 ,this genus may almost be said to have no testaceous covering1 as it appears more like the element of a shell4 ,aplysia depilans4 ,a4 fasciata4 ,a4 punctata4 ,a4 depilans4 ,the bald ,aplysia4 ,shell dorsal1 semicircular1 of a thin yellow cartilaginous substance4 #b4 ,dolabella4 ,two species4 ,closely allied to the ,aplysia2 it is a singularly formed shell1 difficult to describe1 as it contains few of the characteristics which distinguish other shells4 ,shell rudimentary1 entirely flat1 sub-spiral1 with a summit thick and very callous4 ,dolabella ,rumphii4 ,dolabella fragilis4 ,d4 ,rumphii4 ,rumphius's ,dolabella4 ,base thick1 callous1 and sub-spiral2 dilated above1 thin1 and wedge-shaped4 ,,family ,,vi4 ,,limacinea4 ,five genera4 #a4 ,onchidium4 ,has no shell4 ,two species4 ,onchidium ,typh4 ,onchidium ,peronii4 #b4 ,parmacella4 ,one species4 ,lamarck has given a description of the animal of this genus1 but only mentions that the scutcheon contains a shell or solid crustaceous body4 ,parmacella ,olivieri4 #c4 ,limax4 ,four species4 ,the animal belonging to this genus is furnished with a coriaceous shield1 wrinkled4 ,limax rufus4 ,l4 albus4 ,l4 cinerus4 ,l4 agrestis4 #d4 ,testacella4 ,one species4 ,shell external1 very small1 ear-shaped2 very depressed1 summit inclined posteriorly1 not spiral2 aperture oval1 very large2 the left edge sharp1 a little rolled inward1 especially behind4 ,t4 ,haliotidea4 ,the ,haliotis-shaped ,testacella4 ,pl4 #ag1 fig4 #f4 ,answering to the above description2 very thin1 transparent1 and yellowish4 #e4 ,vitrina4 ,one species4 ,shell proportionally very small1 extremely thin1 pellucid1 almost membranous1 oval or sub-globular2 spire very short1 of which the last whorl is very large2 aperture large1 semilunar2 the edges sharp2 the left edge arched1 and extending itself interiorly to the summit4 ,v4 pellucida4 ,the pellucid ,vitrina4 ,pl4 #ag1 fig4 #c4 ,extremely thin1 pellucid1 and glossy2 depressed1 spire very short2 aperture large and oval2 colour pale yellowish green4 ,,family ,,vii4 ,,colimacea4 ,eleven genera4 #a4 ,helix4 ,the ,snail4 ,one hundred and seven species4 ,according to the systematic arrangement of ,lamarck1 this genus now consists of shells with peculiar characteristic distinctions4 ,by ,linnus1 marine1 land1 and fresh-water shells were united in this genus1 and so confounded that the naturalist would often look in vain for the distinguishing characters which would enable him to class and determine the genus of the object under examination4 ,notwithstanding the divisions of ,lamarck1 its species are numerous2 the shells are terrestrial1 and found in all parts of the globe2 some are rare and beautiful4 ,the term ,helix was given to this genus from the spiral form of the shell4 ,shell extremely variable in form1 generally globular1 sometimes ventricose1 conoid1 never turriculated2 summit constantly obtuse and rounded2 aperture generally of a medium size1 but sometimes very large or very small1 always modified by the turn of the spire2 oval1 semilunar1 more wide than long1 edges disunited1 entering but very little into the formation of the interior2 the right lip or margin thickened or reflected4 ,helix vesicalis4 ,h4 algira4 ,h4 pomatia4 ,h4 aspersa4 ,h4 vermiculata4 ,h4 alonensis4 ,h4 lineolata4 ,h4 picta4 ,h4 mutata4 ,h4 gigantea4 ,h4 polyzonalis4 ,h4 monozonalis4 ,h4 pulla4 ,h4 versicolor4 ,h4 ,naticoides4 ,h4 ,madagascariensis4 ,h4 galactites4 ,h4 hmastoma4 ,h4 melanotragus4 ,h4 extensa4 ,h4 lucana4 ,h4 globulus4 ,h4 melanostoma4 ,h4 clatura4 ,h4 microstoma4 ,h4 maculosa4 ,h4 ,richardi4 ,h4 ,bonplandii4 ,h4 planulata4 ,h4 labrella4 ,h4 ungulina4 ,h4 pellis-serpentis4 ,h4 ,senegalensis4 ,h4 unidentata4 ,h4 cepa4 ,h4 heteroclites4 ,h4 discolor4 ,h4 lactea4 ,h4 zonaria4 ,h4 serpentina4 ,h4 ,niciensis4 ,h4 variabilis4 ,h4 fruticum4 ,h4 neglecta4 ,h4 cespitum4 ,h4 ericetorum4 ,h4 intersecta4 ,h4 ,carthusianella4 ,h4 ,carthusiana4 ,h4 diaphana4 ,h4 concolor4 ,h4 velutina4 ,h4 ,javanica4 ,h4 ,peruviana4 ,h4 simplex4 ,h4 cidaris4 ,h4 citrina4 ,h4 guttata4 ,h4 verticillus4 ,h4 olivetorum4 ,h4 planospira4 ,h4 ,barbadensis4 ,h4 sinuata4 ,h4 hippocastanum4 ,h4 bidentalis4 ,h4 argilacea4 ,h4 vittata4 ,h4 alanda4 ,h4 arbustorum4 ,h4 candidissima4 ,h4 nemoralis4 ,h4 hortensis4 ,h4 sylvatica4 ,h4 pisana4 ,h4 splendida4 ,h4 crenulata4 ,h4 planorbula4 ,h4 macularia4 ,h4 maritima4 ,h4 strigata4 ,h4 muralis4 ,h4 rugosa4 ,h4 cornea4 ,h4 linguifera4 ,h4 incarnata4 ,h4 cinctella4 ,h4 cellaria4 ,h4 nitida4 ,h4 obvoluta4 ,h4 ,cookiana4 ,h4 pileus4 ,h4 papilla4 ,h4 punctifera4 ,h4 plicatula4 ,h4 planorbella4 ,h4 scabra4 ,h4 cariosa4 ,h4 plebeium4 ,h4 personata4 ,h4 hispida4 ,h4 rotundata4 ,h4 apicina4 ,h4 striata4 ,h4 conspurcata4 ,h4 conica4 ,h4 conoidea4 ,h4 pulchella4 ,h4 algira4 ,the yellow ,snail4 ,pl4 #ah1 fig4 #h4 ,species shaped like a ,planorbis1 rough or hairy1 more or less largely umbilicated1 margin sharp4 ,h4 ,naticoides4 ,the ,natica-shaped ,snail4 ,pl4 #ah1 fig4 #g4 ,species ventricose4 ,h4 obvoluta4 ,the small white-lipped ,snail4 ,pl4 #ah1 fig4 #i4 ,species more or less depressed1 umbilicated1 ,planorbis-shaped1 the edges of the aperture thickened1 callous1 and even toothed4 ,h4 conoides4 ,the cone-shaped ,snail4 ,pl4 #ah1 fig4 #d4 ,species conoidal2 the turns of the spire rounded4 ,h4 pomatia4 ,the edible ,snail4 ,species sub-globular1 not umbilicated2 the margin of the aperture thickened2 aperture covered with a calcareous lid resembling an operculum4 ,h4 nitida4 ,the pellucid ,snail4 ,species depressed1 more or less largely umbilicated2 the edges sharp1 but always thin and shining4 ,h4 nemoralis4 ,the grove ,snail4 ,species imperforated1 semi-globular1 thin1 and sub-pellucid2 not umbilicated1 with a light inflexion at the place of the junction of the columella with the margin of the aperture2 colour various1 inner margin white or reddish brown2 volutions five1 with several dark brown bands4 ,h4 ,carthusiana4 ,the ,carthusian ,snail4 ,species sub-depressed1 sub-umbilicated1 with a sharp edge1 thickened within by a roll4 ,h4 arbustorum4 ,the orchard ,snail4 ,sub-globular1 sub-pellucid1 sub-umbilicated1 five volutions1 finely striated longitudinally2 mottled with greenish yellow1 streaked with deep chestnut1 a broad brown band commonly at the edge of the outer lip1 and running round through the volutions to the apex4 #b4 ,carocolla4 ,eighteen species4 ,all terrestrial shells in this genus1 taken from the ,linnan ,helix on account of the peculiarity of the shell1 which is orbicular1 more or less flat on the upper part2 the circumference of the shells constantly carinated or sub-carinated2 aperture ovate1 transverse1 contiguous to the axis of the shells2 outer lip sub-angular1 sometimes toothed within4 ,carocolla acutissima4 ,c4 albilabris4 ,c4 angistoma4 ,c4 labyrinthus4 ,c4 lucerna4 ,c4 inflata4 ,c4 ,gualteriana4 ,c4 bicolor4 ,c4 ,mauritiana4 ,c4 ,madagascariensis4 ,c4 marginata4 ,c4 lychnuchus4 ,c4 planata4 ,c4 planaria4 ,c4 hispidula4 ,c4 lapicida4 ,c4 albella4 ,c4 elegans4 ,c4 lapicida4 ,the stone ,carocolla4 ,pl4 #ai1 fig4 #a4 ,species discoid1 very umbilicated2 edges thick1 but not toothed2 beautiful bands4 ,c4 elegans4 ,the elegant ,carocolla4 ,species with a conical spire a little elevated1 the base flat1 the aperture square1 with sharp edges4 ,c4 labyrinthus4 ,the winding ,carocolla4 ,species discoid1 umbilicated1 with the aperture toothed4 #c4 ,anostoma4 ,two species4 ,an extraordinary shell1 sometimes called the antique lamp from its form4 ,shell orbicular1 the spire convex and obtuse2 aperture round1 toothed within1 grinning1 turned upward to the spire2 margin reflected4 ,anostoma depressa4 ,anostoma globulosa4 ,a4 depressa4 ,the depressed ,anostoma4 ,sub-globular1 depressed and sub-carinated in its circumference1 not umbilicated2 aperture round1 the margin continued by a callosity1 toothed1 thickened1 and turned towards the back of the shell4 ,a4 globulosa4 ,the globular ,anostoma4 ,globose1 with two small punctures1 one on each side of the lip2 slightly carinated1 smooth1 and white2 margin reflected4 #d4 ,helicina4 ,four species4 ,a terrestrial shell1 distinguished from the ,helix by its transverse callous columella2 depressed and diminished in thickness at the lower part4 ,shell sub-globular or conoid1 spire low1 a little depressed2 aperture semi-ovate1 modified by the last turn of the spire2 the edge of the aperture sharp or a little reflected in a roll1 the left edge enlarged at its base in a large callosity1 which entirely covers the umbilicus and joins obliquely with the columella1 which is twisted and a little projecting2 the operculum horny1 complete1 sometimes calcareous externally4 ,helicina ,neritella4 ,h4 striata4 ,h4 fasciata4 ,h4 viridis4 ,h4 ,neritella4 ,the ,nerite-shaped ,helicina4 ,pl4 #ai1 fig4 #d4 ,species yellowish white1 finely striated1 the edge reflected in a roll4 ,h4 striata4 ,the striated ,helicina4 ,globular1 striated1 the right edge sharp1 but reflected2 the umbilical callosity rather thick1 the operculum calcareous and solidified by a marginal roll and a vertical crosspiece4 #e4 ,pupa4 ,twenty-seven species4 ,these shells are generally very small1 some not more than an eighth of an inch in length2 chiefly terrestrial4 ,shell cylindrical1 elongated1 or sub-globular1 ordinarily ventricose3 summit obtuse2 the turns of the spire numerous1 almost equal2 aperture round or oval1 with margins almost equal1 expanded1 reflected2 one or two plaits on the columellar edge1 and several teeth1 varying in number on the right margin4 ,pupa mumia4 ,p4 uva4 ,p4 sulcata4 ,p4 candida4 ,p4 labrosa4 ,p4 fusus4 ,p4 tridentata4 ,p4 fasciolata4 ,p4 quadridens4 ,p4 polyodon4 ,p4 variabilis4 ,p4 frumentum4 ,p4 secalis4 ,p4 zebra4 ,p4 unicarinata4 ,p4 maculosa4 ,p4 clavulata4 ,p4 ovularis4 ,p4 ,germanica4 ,p4 cinerea4 ,p4 tridens4 ,p4 avena4 ,p4 granum4 ,p4 fragilis4 ,p4 dolium4 ,p4 umbilicata4 ,p4 muscorum4 ,p4 ,lyonetiana4 ,lyonet's ,pupa4 ,pl4 #ah1 fig4 #e4 ,species cylindrical1 obtuse1 aperture compressed and distorted by the last whorl in its adult state making suddenly a gibbous inflection to the left4 ,p4 muscorum4 ,the moss ,pupa4 ,species very small1 oval or more or less spherical1 obtuse1 light brownish colour2 aperture large1 with one tooth2 volutions convex2 outer lip white and reflected4 ,p4 mumia4 ,the double-toothed ,pupa4 ,pl4 #ai1 fig4 #b4 ,species cylindrical1 obtuse at both ends1 aperture semi-ovate1 with two teeth4 #f4 ,clausilia4 ,twelve species4 ,remarkable for having the termination of the lower whorl quite detached from the base of the shell4 ,shell cylindrical1 elongated1 a little ventricose in the middle1 generally fusiform1 summit obtuse1 the last turn smaller than the preceding2 aperture small1 irregular1 oval2 at least one plait1 posterior to the columella1 increasing with age so as to be separated1 and forming at the posterior angle of the aperture a rounded sinus4 ,clausilia torticollis4 ,c4 truncatula4 ,c4 retusa4 ,c4 costulata4 ,c4 corrugata4 ,c4 inflata4 ,c4 teres4 ,c4 denticulata4 ,c4 collaris4 ,c4 papillaris4 ,c4 plicatula4 ,c4 rugosa4 ,c4 lvis4 ,the smooth ,clausilia4 ,pl4 #ai1 fig4 #c4 ,a regular type of this genus4 ,c4 papillaris4 ,the pimpled ,clausilia4 ,pellucid1 finely striped longitudinally1 the margins of the volutions papillose2 aperture with two plaits2 brownish colour4 #g4 ,bulimus4 ,thirty-four species4 ,the shells of this beautiful genus are all terrestrial1 and differ from the ,helix and ,bulla of ,linnus in never being of an orbicular shape4 ,the animals inhabiting them are said to be oviparous1 and have eggs nearly as large as those of a pigeon4 ,shell oval1 oblong1 sometimes sub-turriculated2 the summit of the spire obtuse1 and the last turn much greater than all the others taken together2 aperture oblong oval1 the edge disunited2 the right reflected outward in adults2 the columella smooth1 with an inflection in the middle1 at the point of junction of the columella with the mouth of the aperture which it forms4 ,bulimus ovatus4 ,b4 hmastomus4 ,b4 gallina sultana4 ,b4 zigzag4 ,b4 undatus4 ,b4 ovoideus4 ,b4 interruptus4 ,b4 ,peruvianus4 ,b4 ,favannii4 ,b4 ,kambeul4 ,b4 calcareus4 ,b4 decollatus4 ,b4 ,lyonetianus4 ,b4 inflatus4 ,b4 radiatus4 ,b4 fragilis4 ,b4 ,guadaloupensis4 ,b4 ,richii4 ,b4 inversus4 ,b4 citrinus4 ,b4 sultanus4 ,b4 ,pythogaster4 ,b4 ,mexicanus4 ,b4 multifasciatus4 ,b4 ,bengalensis4 ,b4 ,cariborum4 ,b4 octonus4 ,b4 terebraster4 ,b4 articulatus4 ,b4 acutus4 ,b4 ventricosus4 ,b4 montanus4 ,b4 hordeaceus4 ,b4 lubricus4 ,b4 montanus4 ,the mountain ,bulimus4 ,ovate oblong1 umbilicated1 slightly striated longitudinally1 with several convex volutions2 aperture semi-oval2 brownish colour2 outer lip white and reflected4 ,b4 hmastomus4 ,the rose-lipped ,bulimus4 ,species oval or of ordinary form4 ,b4 ventricosus4 ,the ventricose ,bulimus4 ,species ventricose1 from which circumstance it derived its name4 ,b4 radiatus4 ,the radiated ,bulimus4 ,pl4 #ai1 fig4 #g4 ,species turriculated4 ,b4 citrinus4 ,the citron ,bulimus4 ,species sinistral4 ,b4 multifasciatus4 ,the many-banded ,bulimus4 ,species slightly umbilicated4 #h4 ,achatina4 ,twenty species4 ,this likewise is an elegant genus of shells1 classed by ,linnus with the ,bulla4 ,they are the largest land-shells known1 and greatly resemble the ,bulimus1 but never have their lips reflected or thickened4 ,sometimes the last whorl is compressed and attenuated at the base1 and sometimes ventricose and not compressed4 ,shell in form very variable1 but generally sub-turriculated1 ventricose1 striated longitudinally2 the summit papillose2 aperture a little variable1 but never thickened or reflected2 the right edge always acute1 the columellar margin rather strongly hollowed1 entirely formed by the columella1 of which the anterior extremity is constantly open and truncated4 ,achatina perdix4 ,a4 zebra4 ,a4 acuta4 ,a4 bicarinata4 ,a4 ,mauritiana4 ,a4 castanea4 ,a4 glans4 ,a4 ,peruviana4 ,a4 albo-lineata4 ,a4 fusco-lineata4 ,a4 immaculata4 ,a4 purpurea4 ,a4 ustulata4 ,a4 vexillum4 ,a4 ,virginea4 ,a4 ,priamus4 ,a4 fulminea4 ,a4 columnaria4 ,a4 folliculus4 ,a4 acicula4 ,a4 ,virginea4 ,the ,virginian ,achatina4 ,smooth1 conoid1 with aperture almost round2 very short1 grayish white1 with red and black transverse bands2 columella rose-coloured1 with one plait2 volutions ventricose2 inside of the lips bluish2 a transverse callosity in the interior4 ,a4 zebra4 ,the zebra ,achatina4 ,pl4 #ah1 fig4 #a4 ,species thin1 oval1 sub-ventricose1 spire prominent1 striped like a zebra4 ,a4 glans4 ,the acorn ,achatina4 ,pl4 #ah1 fig4 #b4 ,species sub-turriculated1 of which the last whorl is attenuated anteriorly4 ,a4 columnaris4 ,the columnar ,achatina4 ,pl4 #ah1 fig4 #c4 ,species evidently turriculated4 #i4 ,succinea4 ,three species4 ,a terrestrial shell1 though the animal that inhabits it is almost amphibious2 it greatly resembles the ,bulimus1 but is easily distinguished by never having the lip reflected or thickened4 ,shell very thin1 translucid1 ovate-oblong1 with a conical-pointed spire formed of a small number of whorls2 aperture very large1 oval1 oblique2 the edges disunited2 the right always acute1 the left acute and arched1 formed by the columella4 ,succinea cucullata4 ,s4 amphibia4 ,s4 oblonga4 ,s4 amphibia4 ,the amphibious ,succinea4 ,pl4 #bd1 fig4 #d4 ,species elongated1 very thin and pellucid2 spire short2 aperture expanding2 amber colour4 #aj4 ,auricula4 ,fourteen species4 ,this genus was so called from the resemblance which the aperture bears to the shape of an ear2 many of the species are named from their resemblance to the ears of particular quadrupeds4 ,it is a land-shell1 found chiefly in the ,east and ,west ,india ,islands4 ,shell thick1 solid1 more or less smooth1 oval1 oblong1 spire short and obtuse2 aperture entire1 oblong1 enlarged1 ear-shaped1 much contracted behind2 edges disunited2 right lip sometimes thick and outwardly reflected2 the left or columella with one or more teeth or thick callous plaits4 ,auricula ,mid4 ,a4 ,jud4 ,a4 ,sileni4 ,a4 leporis4 ,a4 felis4 ,a4 ,dombeiana4 ,a4 coniformis4 ,a4 scarabus4 ,a4 bovina4 ,a4 caprella4 ,a4 myosotis4 ,a4 minima4 ,a4 nitens4 ,a4 monile4 ,a4 ,jud4 ,judas's ,ear4 ,pl4 #ai1 fig4 #f4 ,species thick1 oblong1 conical1 with minute decussated stri and granulations2 light brown2 two plaits on the columella2 right outwardly reflected4 ,a4 scarabus4 ,the ,beetle's ,ear4 ,species of which the columella has three plaits1 and the whole internal side of the right edge denticulated4 ,a4 myosotis4 ,the dwarf ,auricula4 ,species minute1 with two plaits on the columella1 and one tooth behind4 ,a4 ,sileni4 ,silenus's ,ear4 ,species very small1 without plaits or teeth4 #aa4 ,cyclostoma4 ,twenty-eight species4 ,a terrestrial shell1 varying considerably in form1 but distinguished by a round aperture1 reflected lip1 and horny operculum4 ,shell more or less elevated1 volutions rounded1 summit papillose2 aperture round1 the edges united circularly and reflected2 the left having its origin very detached from the spire4 ,operculum calcareous1 complete1 not spiral2 summit sub-central4 ,cyclostoma planorbula4 ,c4 volvulus4 ,c4 carinata4 ,c4 sulcata4 ,c4 unicarinata4 ,c4 tricarinata4 ,c4 obsoleta4 ,c4 rugosa4 ,c4 labeo4 ,c4 interrupta4 ,c4 ambigua4 ,c4 semilabris4 ,c4 flavula4 ,c4 patulum4 ,c4 fasciata4 ,c4 mumia4 ,c4 quaternata4 ,c4 ferruginea4 ,c4 decussata4 ,c4 lineolata4 ,c4 mamillaris4 ,c4 ligata4 ,c4 lincinella4 ,c4 orbella4 ,c4 fimbriata4 ,c4 multilabris4 ,c4 elegans4 ,c4 truncatulum4 ,c4 elegans4 ,the elegant ,cyclostoma4 ,pl4 #ai1 fig4 #e4 ,species with spire slightly elevated1 ovate1 conical1 umbilicated2 volutions convex2 finely striated transversely4 ,c4 fasciata4 ,the banded ,cyclostoma4 ,species with spire very elevated4 ,c4 ,planorbula4 ,the ,planorbis-shaped ,cyclostoma4 ,species with spire very depressed4 ,,family ,,viii4 ,,lymn,,cea4 ,three genera4 #a4 ,planorbis4 ,twelve species4 ,taken from the ,helix of ,linnus to distinguish the aquatic from the terrestrial shells4 ,this genus is found in fresh water1 and has no operculum4 ,shell thin1 often sinistral1 discoid1 or involuted almost in the same vertical plane2 the spire not projecting and entirely lateral1 so that the shell is hollowed or depressed on each side2 aperture small1 transverse1 with edges sharp1 not reflected1 disunited by the last whorl of the spire which modifies it2 sometimes carinated4 ,planorbis cornu-arietis4 ,p4 corneus4 ,p4 carinatus4 ,p4 lutescens4 ,p4 orientalis4 ,p4 spirorbis4 ,p4 vortex4 ,p4 deformis4 ,p4 contortus4 ,p4 hispidus4 ,p4 nitidus4 ,p4 imbricatus4 ,p4 carinatus4 ,the keeled ,planorbis4 ,species with a keel2 depressed1 upper side concave4 ,p4 corneus4 ,the horny ,planorbis4 ,pl4 #bj1 fig4 #d4 ,species without a keel4 #b4 ,physa4 ,four species4 ,this genus is generally heterostrophe 7that is1 with whorls turned to the left hand72 found in fresh water2 it greatly resembles the ,lymna1 but has not a widened aperture4 ,shell often sinistral1 oval1 oblong1 or globular1 perfectly smooth2 aperture oval1 contracted posteriorly2 the right edge sharp1 advanced above the plane of the left edge2 columella twisting obliquely1 and enlarging to join itself to the anterior part of the columellar margin4 ,physa castanea4 ,p4 fontinalis4 ,p4 hypnorum4 ,p4 subopaca4 ,p4 fontinalis4 ,the fountain ,physa4 ,pl4 #bj1 fig4 #b4 ,volutions reversed1 oval1 ventricose1 pellucid1 horn-coloured2 spire short and acute4 #c4 ,lymna4 ,eleven species4 ,shell aquatic1 oval1 turreted or conical1 thin1 smooth1 spire pointed2 aperture oval1 entire2 edges disunited1 the left with a very oblique plait at the point of junction of the columella with the rest of the margin4 ,lymna stagnalis4 ,l4 palustris4 ,l4 ,virginiana4 ,l4 luteola4 ,l4 acuminata4 ,l4 auricularia4 ,l4 ovata4 ,l4 peregra4 ,l4 intermedia4 ,l4 leucostoma4 ,l4 minuta4 ,l4 stagnalis4 ,the pond ,lymna4 ,pl4 #bj1 fig4 #a4 ,ovate1 ventricose2 spire subulate and very acute2 aperture large and ovate2 horn coloured4 ,l4 leucostoma4 ,the shining ,lymna4 ,species sub-turreted1 with the right edge thickened4 ,,family ,,ix4 ,,melanides4 ,three genera4 #a4 ,melania4 ,sixteen species4 ,likewise taken from the ,helix of ,linnus4 ,shell fluviatile1 covered with epidermis1 oval1 oblong2 spire slightly pointed1 more or less turreted2 the margin of the whorls often surmounted by spires2 aperture oval1 entire2 columella smooth and arched2 closed by a thin1 horny1 complete operculum4 ,melania asperata4 ,m4 truncata4 ,m4 coarctata4 ,m4 punctata4 ,m4 corrugata4 ,m4 subulata4 ,m4 lvigata4 ,m4 clavus4 ,m4 decollata4 ,m4 amarula4 ,m4 thiarella4 ,m4 spinulosa4 ,m4 granifera4 ,m4 carinifera4 ,m4 truncatula4 ,m4 fasciolata4 ,m4 amarula4 ,the crowned ,melania4 ,pl4 #bj1 fig4 #c4 ,covered with a black epidermis1 under which the colour is deep chestnut2 ovate oblong1 with the whorls transversely keeled and coronated with triangular tubercles1 from which emanate ciliated spines4 #b4 ,melanopsis4 ,three species4 ,the shells of this genus are fluviatile1 and distinguished from the ,melania by having the upper part of the columella callous4 ,shell oval or slightly sub-turriculated2 aperture oval1 without trace of tube1 but hollowed anteriorly1 without a posterior sinus2 the columellar edge callous and rather deeply excavated2 operculum horny1 sub-spiral1 rather complete4 ,melanopsis ,buccinoides4 ,m4 costata4 ,m4 lvigata4 ,m4 ,buccinoides4 ,the ,buccinum-shaped ,melanopsis4 ,pl4 #bj1 fig4 #f4 ,species turriculated2 colour bluish white1 clouded with purple2 spiral whorls dentated4 ,m4 costata4 ,the ribbed ,melanopsis4 ,species sub-turriculated and ribbed4 ,m4 lvigata4 ,the polished ,melanopsis4 ,species ovate1 smooth1 chestnut colour4 #c4 ,pirena4 ,four species4 ,this shell resembles the ,melania1 but is easily distinguished by having a sinus at the base and another at the summit4 ,shell turreted1 aperture oblong1 closed by a horny operculum2 right lip sharp1 with a distinct sinus at the base and another at the summit2 base of the columella inclined towards the right4 ,pirena terebralis4 ,p4 spinosa4 ,p4 aurita4 ,p4 granulosa4 ,p4 terebralis4 ,the wimble ,pirena4 ,subulate1 longitudinally striated1 covered with a dark-brown epidermis2 aperture white1 outer lip expanded4 ,,family ,x4 ,,peristomides4 ,three genera4 #a4 ,valvata4 ,one species4 ,this genus contains shells found in fresh water4 ,shell sub-discoid or conoid1 umbilicated1 spiral whorls rounded2 summit papillose2 aperture round1 not modified by the last whorl2 the edges completely united1 sharp2 operculum complete1 horny1 and orbicular4 ,v4 piscinalis4 ,the ,pond ,valvata4 ,pl4 #bj1 fig4 #e4 ,small1 globular1 conoid1 deeply umbilicated2 summit obtuse2 wrinkled longitudinally1 covered with a yellowish epidermis4 #b4 ,paludina4 ,seven species4 ,generally inhabits fresh water1 though some have been found where it is quite saline4 ,shell conoid1 covered with epidermis1 spiral whorls rounded2 rather longer than broad1 edges united1 always sharp2 the commencement of the left edge immediately attached to the last whorl of the spire2 operculum horny1 complete1 or marginal1 not spiral1 with concentral elements4 ,paludina vivipara4 ,p4 achatina4 ,p4 ,bengalensis4 ,p4 unicolor4 ,p4 impura4 ,p4 muriatica4 ,p4 viridis4 ,p4 vivipara4 ,the viviparous ,paludina4 ,pl4 #ba1 fig4 #a4 ,thin1 ovate1 ventricose1 wrinkled longitudinally2 body with three brown bands3 covered with a greenish epidermis2 aperture almost round4 #c4 ,ampullaria4 ,eleven species4 ,this genus is evidently intermediary to the ,paludina and the ,natica4 ,its species are probably all fluviatile2 some attain a great size4 ,shell thin1 globular1 ventricose2 umbilicus small1 forming a compressed funnel-shaped aperture1 without interior callosity2 spire very short1 the last whorl much larger than all the others together2 aperture ovate1 longer than broad1 with margins united2 right margin smooth and sharp2 columellar lip thickened1 projecting1 and reflected over the umbilicus2 operculum horny1 rarely calcareous1 thin1 oval1 not spiral1 with concentric elements2 summit sub-marginal1 inferior1 passing obliquely by the right edge of the aperture1 but attached to the left4 ,ampullaria ,guyanensis4 ,a4 rugosa4 ,a4 fasciata4 ,a4 canaliculata4 ,a4 effusa4 ,a4 ,guinaica4 ,a4 virens4 ,a4 carinata4 ,a4 avellana4 ,a4 intorta4 ,a4 fragilis4 ,a4 ,guyanensis4 ,the ,guiana ,ampullaria4 ,globular1 thick1 with unequal longitudinal stri2 covered with brown epidermis2 inside golden colour4 ,a4 rugosa4 ,the rough ,ampullaria4 ,pl4 #ba1 fig4 #c4 ,species dextral4 ,a4 ,guinaica4 ,the ,guinea ,ampullaria4 ,species sinistral4 ,a4 carinata4 ,the carinated ,ampullaria4 ,species sinistral1 with a very large umbilicus1 spirally carinated4 ,,family ,,xi4 ,,neritacea4 ,five genera4 #a4 ,neritina4 ,twenty-one species4 ,formerly classed with the ,nerita1 but separated from it because the ,nerita is a marine shell1 and those of this genus are fluviatile4 ,they are generally thin1 smooth1 or very finely striated2 the right side of the aperture is not crenulated or dentated1 and the animal dissolves the interior of the spire4 ,shell thin1 ovate1 not umbilicated2 aperture semilunar2 inner lip reflected on the columella1 and sometimes crenated2 outer lip without teeth internally2 operculum with a lateral tooth4 ,neritina perversa4 ,n4 pulligera4 ,n4 dubia4 ,n4 zebra4 ,n4 zigzag4 ,n4 gagates4 ,n4 lugubris4 ,n4 corona4 ,n4 brevispina4 ,n4 crepidularia4 ,n4 auriculata4 ,n4 ,domingensis4 ,n4 fasciata4 ,n4 lineolata4 ,n4 semi-conica4 ,n4 strigilata4 ,n4 meleagris4 ,n4 ,virginea4 ,n4 fluviatilis4 ,n4 viridis4 ,n4 ,btica4 ,n4 fluviatilis4 ,the fresh-water ,neritina4 ,shell very small1 oval2 back convex1 smooth1 white1 with black or brown spots2 spire inclined1 lateral lip slightly denticulated2 right edge sharp1 operculum very oblique4 ,n4 zebra4 ,the zebra or striped ,neritina4 ,pl4 #ba1 fig4 #b4 ,same as ,n4 fluviatilis1 but striped instead of spotted4 ,n4 corona4 ,the crown ,neritina4 ,pl4 #ba1 fig4 #d4 ,species provided with long spines1 and with the columellar edge denticulated4 ,n4 auriculata4 ,the eared ,neritina4 ,species with the columellar edge denticulated2 the two extremities of the right edge extending beyond the aperture1 and forming with the callosity1 which is reflected over the columella1 a kind or ear1 produced by the tentacular lobe of the animal4 ,n4 perversa4 ,the perverse ,neritina4 ,species shaped like a ,calyptra1 with the superior summit vertical1 spiral2 the last whorl forming all the base of the shell4 #b4 ,navicella4 ,three species4 ,a fresh-water shell1 closely allied to the ,neritina2 it generally has the appearance of porcelain4 ,shell ovate oblong1 covered with epidermis1 shaped like a ,patella1 summit not spiral1 but straight1 turned quite to the base1 and concave beneath2 no columella2 the columellar edge replaced by a kind of sharp partition1 which covers part of the aperture1 with a sinus at its left extremity2 muscular impression shaped like a horseshoe1 open in front and interrupted behind2 thin1 calcareous operculum1 with a subulate1 lateral tooth adhering to the posterior margin2 the other edges sharp4 ,navicella elliptica4 ,n4 lineata4 ,n4 tessellata4 ,n4 elliptica4 ,the oval ,navicella4 ,shell covered with olive epidermis1 under which it is smooth1 shining1 spotted and streaked with purple1 blue1 or brown2 spire curved1 prominent1 extending beyond the margin4 #c4 ,nerita4 ,the ,hoof ,shell4 ,seventeen species4 ,a marine shell1 never spined1 but variously striated4 ,some species of this genus are very beautiful2 they are frequently worn as ornaments by the ,indians4 ,shell solid1 thick1 more or less globular1 flat beneath1 spire but little1 if at all1 projecting1 not umbilicated2 aperture large1 semilunar1 very entire2 the external margin very much hollowed2 the internal or columellar straight1 sharp1 and shaped like a partition1 often dentated2 operculum horny or calcareous1 sub-spiral2 the summit entirely marginal at its extremity1 implanted by teeth more or less marked1 and sunk in the columellar margin1 on which it seems articulated4 ,nerita exuvia4 ,n4 textilis4 ,n4 undata4 ,n4 peloronta4 ,n4 chlorostoma4 ,n4 atrata4 ,n4 polita4 ,n4 albicilla4 ,n4 chamleon4 ,n4 versicolor4 ,n4 ,ascensionis4 ,n4 ,malaccensis4 ,n4 lineata4 ,n4 scabricosta4 ,n4 plicata4 ,n4 tessellata4 ,n4 signata4 ,n4 peloronta4 ,the bleeding-tooth ,nerita4 ,pl4 #ba1 fig4 #e4 ,thick1 transversely sulcated2 inner lip with two crenulations1 with a bloody mark at their base2 under lip with two notches near its internal upper edge2 colour yellowish1 tinged with red1 with variously coloured bands4 ,n4 exuvia4 ,the exuvia ,nerita4 ,species with the inner lip toothed and tuberculated4 ,n4 polita4 ,the smooth ,nerita4 ,species with both lips toothed2 beautifully distinguished by having three or four bright crimson bands1 on a dark mottled ground1 running in a parallel direction with the convolutions of the shell4 ,a favourite ,indian ornament4 #d4 ,natica4 ,thirty-one species4 ,a marine shell1 formerly classed with the ,nerita1 but distinguished by being without teeth1 and having an umbilicus modified by the callosity4 ,shell smooth1 rather thin1 and not covered with epidermis2 the spire evident1 though low1 umbilicated2 the columellar edge not toothed1 more or less callous1 modifying the umbilicus2 the right edge thin and not toothed interiorly2 operculum calcareous or horny and smooth1 semi-spiral1 with concentric ribs fitting into a slight groove on the columella4 ,natica glaucina4 ,n4 albumen4 ,n4 mamillaris4 ,n4 mamilla4 ,n4 ampullaria4 ,n4 canrena4 ,n4 cruentata4 ,n4 millepunctata4 ,n4 vitellus4 ,n4 helvacea4 ,n4 collaria4 ,n4 monilifera4 ,n4 labrella4 ,n4 rufa4 ,n4 uni-fasciata4 ,n4 melanostoma4 ,n4 aurantia4 ,n4 conica4 ,n4 plumbea4 ,n4 lineata4 ,n4 fulminea4 ,n4 maculosa4 ,n4 vittata4 ,n4 castanea4 ,n4 ,marochiensis4 ,n4 arachnoidea4 ,n4 zebra4 ,n4 zonaria4 ,n4 ,chinensis4 ,n4 ,javanica4 ,n4 cancellata4 ,n4 canrena4 ,the ,canrena ,natica4 ,sub-globular1 smooth1 umbilicus deep1 bordered anteriorly by a kind of callous column2 spire a little prominent2 exterior fawn coloured1 with bands and rays of reddish brown2 interior white2 operculum calcareous4 ,n4 castanea4 ,the chestnut ,natica4 ,pl4 #ba1 fig4 #f4 ,species with the umbilicus uncovered1 and the operculum horny4 ,n4 mamilla4 ,the nipple ,natica4 ,species with the umbilicus entirely covered over by a large callosity2 the spire papillose1 and the operculum horny4 #e4 ,janthina4 ,two species4 ,formerly classed with the ,helix1 which it somewhat resembles in form1 but properly separated1 as it differs in every other respect4 ,it is a singular marine shell1 often found in great numbers floating on the surface of the sea1 suspended by a vesicular appendage1 which stains the hand of a purple colour4 ,shell sub-globular1 ventricose1 extremely thin and fragile2 transparent1 of a beautiful violet colour2 the spire low1 lateral1 pointed1 with sub-carinated whorls2 aperture large1 sub-angular1 greatly modified by the last whorl of the spire2 edges disunited1 the left entirely formed by the columella1 which is straight and continued beyond the base1 the right edge sharp1 often with a sinus in the middle4 ,janthina communis4 ,janthina exigua4 ,j4 communis4 ,the common ,janthina4 ,pl4 #ah1 fig4 #f4 ,very fragile1 aperture triangular1 with a small notch on the margin of the outer lip2 beautiful violet colour4 ,,family ,,xii4 ,,macrostomides4 ,four genera4 #a4 ,sigaretus4 ,four species4 ,distinguished from the ,natica by the great width of the aperture1 and its short spiral columella4 ,shell oval1 more or less thick1 very depressed1 spiral short1 little elevated1 lateral2 aperture very extended1 entire1 the left edge reflected and sharp2 two lateral muscular impressions very disunited4 ,sigaretus ,haliotoideus4 ,s4 convexus4 ,s4 lvigatus4 ,s4 cancellatus4 ,s4 convexus4 ,the convex ,sigaretus4 ,pl4 #bb1 fig4 #b4 ,very thin1 smooth1 back convex1 spire white1 rather prominent2 aperture very expanded2 umbilicus rather deep2 yellow1 with a reddish tinge1 transversely striated4 ,s4 ,haliotoideus4 ,the ,haliotis-shaped ,sigaretus4 ,species thick1 solid1 depressed2 spire flattish1 aperture exposing the whole of the interior4 #b4 ,stomatella4 ,five species4 ,to be easily distinguished from the ,stomatia by not having a transversal rib4 ,shell very depressed1 orbicular or oblong2 imperforate2 interior pearly2 aperture very large1 oval1 longer than wide2 the right edge effuse1 dilated1 and open2 summit pointed and incurved4 ,stomatella imbricata4 ,s4 rubra4 ,s4 sulcifera4 ,s4 auricula4 ,s4 planulata4 ,s4 imbricata4 ,the imbricated ,stomatella4 ,pl4 #bb1 fig4 #a4 ,sub-orbicular1 convex1 sub-depressed1 rough1 covered with imbricated scales2 colour grayish brown4 ,s4 auricula4 ,the ear-shaped ,stomatella4 ,species oval1 elongated4 #c4 ,stomatia4 ,two species4 ,bearing a very great resemblance to the ,haliotis1 but is never perforated4 ,shell ear-shaped1 imperforate2 oblong1 spire elevated and recurved to one side2 aperture entire1 oblong2 interior pearly2 tuberculated1 and with a transverse sub-carinated rib4 ,s4 phymotis4 ,the tumoured ,stomatia4 ,pl4 #bb1 fig4 #f4 ,elongated oval1 striated1 tuberculated2 spire small1 contorted2 lip thin and sharp1 colour white1 interior pearly4 #d4 ,haliotis4 ,the ,ear ,shell4 ,fifteen species4 ,this genus is very beautiful1 and derived its common name from its resemblance to the human ear4 ,the exterior is generally tuberculated and loaded with marine substances1 which gives it a rough and uncouth appearance1 but the interior forms a splendid contrast by its natural iridescence4 ,each shell is furnished with a row of orifices near the margin1 varying in number from eight upward2 of these from three to seven are generally open1 and the others close4 ,these holes are made by the animal as it increases the size of the shell1 to admit the passage of a short syphon4 ,they are found adhering to rocks like the ,patella1 and are detached with great difficulty4 ,shell ear-shaped1 pearly1 recurving1 very depressed1 more or less oval1 with spire very small1 very low1 almost posterior and lateral2 aperture as large as the shell1 with margins continued2 the right thin and sharp1 the left flat1 enlarged1 and sharp2 a series of holes1 complete or incomplete1 parallel to the left margin2 one large oval muscular impression4 ,haliotis ,mid4 ,h4 iris4 ,h4 tubifera4 ,h4 excavata4 ,h4 ,australis4 ,h4 tuberculata4 ,h4 striata4 ,h4 asinina4 ,h4 glabra4 ,h4 lamellosa4 ,h4 unilateralis4 ,h4 rugosa4 ,h4 canaliculata4 ,h4 tricostalis4 ,h4 dubia4 ,h4 asinina4 ,the asinine ,haliotis4 ,internal margin very broad1 inside pearly1 smooth1 shining1 iridescent1 reflecting green1 pink1 and orange2 back clouded with brown and green2 striated longitudinally4 ,h4 costata4 ,the ribbed ,haliotis4 ,pl4 #bb1 fig4 #d1 interior4 ,pl4 #cb1 fig4 #f1 exterior4 ,species with disk rounded anteriorly4 ,h4 canaliculata4 ,the channelled ,haliotis4 ,species with disk elevated by a large parallel rib1 hollowed interiorly1 and with the anterior margin more or less irregular4 ,h4 tuberculata4 ,the tuberculated ,haliotis4 ,aperture open the whole length of the shell2 outer lip irregular1 exterior reddish brown1 striated longitudinally and wrinkled transversely1 with a few raised tubercles2 interior pearly1 reflecting the most beautiful shades of pink1 blue1 green1 and yellow4 ,,family ,,xiii4 ,,plicacea4 ,two genera4 #a4 ,tornatella4 ,six species4 ,shell thick1 oval1 convolute1 the spire very short2 the last whorl much larger than all the others united2 the external thin1 sharp1 dentated interiorly2 one or two large plaits on the columella1 of which one serves to separate the two parts of the foot4 ,tornatella flammea4 ,t4 solidula4 ,t4 fasciata4 ,t4 auricula4 ,t4 nitidula4 ,t4 pedipes4 ,t4 fasciata4 ,the banded ,tornatella4 ,spire produced1 apex acute1 aperture straightened1 with one plait on the columella2 finely striated transversely1 with two white transverse bands2 colour purplish red4 ,t4 coniformis4 ,the cone-shaped ,tornatella4 ,pl4 #bb1 fig4 #c4 ,species like a cone2 the spire entirely flat4 #b4 ,pyramidella4 ,five species4 ,shell smooth1 not covered with epidermis1 conical1 elongated or sub-turriculated2 aperture semi-oval1 entire2 the outer lip sharp1 dentated interiorly1 plaited1 enlarged over the umbilicus1 which it leaves more or less exposed4 ,pyramidella terebellum4 ,p4 dolabrata4 ,p4 plicata4 ,p4 corrugata4 ,p4 maculosa4 ,p4 dolabrata4 ,the dentated ,pyramidella4 ,pl4 #bb1 fig4 #e4 ,answers to the above description2 when placed on its base1 it falls on one side4 ,p4 terebellum4 ,the wimble ,pyramidella4 ,smooth1 glossy1 white1 with reddish-brown bands2 columella recurved2 inside of the lip smooth4 ,,family ,,xiv4 ,,scalarides4 ,three genera4 #a4 ,vermetus4 ,one species4 ,resembling in appearance the shell of a ,serpula2 but the organization of the animal caused this to be made a distinct genus4 ,its shells are usually found grouped together or intertwined with each other1 and are very remarkable for being attached to marine bodies by the attenuated and pointed extremity of the spire4 ,shell conical1 tubular1 thin1 involute spirally1 more or less close1 with whorls almost completely disunited2 free or adherent by intertwining2 aperture straight1 circular1 with edges sharp and complete2 several partitions not perforated towards the summit2 operculum horny and complete4 ,v4 lumbricales4 ,the wormlike ,vermetus4 ,pl4 #bc1 fig4 #c4 ,a flexuous shell1 with a spiral1 acute tip1 very much resembling a corkscrew2 colour reddish brown1 sometimes clouded with a darker shade4 #b4 ,scalaria4 ,seven species4 ,a marine shell1 with a circular aperture like the ,cyclostoma1 but easily distinguished by its turreted form2 longitudinal1 elevated ribs1 never connected together1 rather oblique1 and sharp2 the shape of the shell is elegant1 being a spiral cone1 formed by gibbous whorls1 unconnected by a columella1 gradually increasing from the apex to the base4 ,the colour is generally yellowish or brownish white4 ,when perfect and of good size1 they are of great value and highly prized4 ,shell sub-turreted1 the whorls of the spire more or less pressed and garnished with interrupted longitudinal ribs1 formed by the successive preservation of the reflected margin of the aperture1 which is small1 perfectly round1 with edges united1 thickened1 and outwardly reflected2 operculum horny and thin4 ,scalaria pretiosa4 ,s4 lamellosa4 ,s4 coronata4 ,s4 varicosa4 ,s4 communis4 ,s4 ,australis4 ,s4 raricosta4 ,s4 pretiosa4 ,the precious ,scalaria1 more commonly called the ,wentle ,trap1 or ,winding ,staircase4 ,pl4 #bc1 fig4 #a4 ,this shell has its spiral whorls separate1 and appears like an attenuated tube evolved round a cone2 spire detached1 with a deep umbilicus2 volutions connected by longitudinal ribs2 body extremely ventricose2 colour cream yellow4 ,s4 communis4 ,the common ,scalaria1 or false ,wentle ,trap4 ,more taper and elongated than the ,s4 pretiosa4 ,it has no umbilicus1 and the whorls are closely united4 #c4 ,delphinula4 ,three species4 ,a marine shell1 which1 like the ,scalaria1 has a round aperture1 but its solidity and pearly substance distinguishes it from the ,cyclostoma1 which is terrestrial4 ,shell thick1 pearly in the interior1 sub-discoid or conical2 the spiral whorls sometimes detached1 rounded1 spiny1 with a large umbilicus2 aperture round or multrigonal1 not modified2 edges perfectly united with a small spire1 tuberculated exteriorly4 ,delphinula laciniata4 ,d4 distorta4 ,d4 turbinopsis4 ,d4 laciniata4 ,the fringed ,delphinula4 ,pl4 #bc1 fig4 #e4 ,shell depressed1 umbilicus large1 surrounded by large vaulted scales in spiral rows2 strong waved spiral stri2 colour reddish purple1 variegated with white4 ,,family ,,xv4 ,,turbinacea4 ,seven genera4 #a4 ,solarium4 ,seven species4 ,some shells of this genus are highly valued for their beauty and rarity4 ,shell orbicular1 involuted almost in the same plane2 ,planorbis-shaped2 the spire of the right side very depressed2 umbilicus large and conical1 with edges denticulated or not at the entrance2 aperture not modified by the last whorl of the spire1 which is entirely flat2 no columella4 ,solarium perspectivum4 ,s4 granulatum4 ,s4 lvigatum4 ,s4 stramineum4 ,s4 hybridum4 ,s4 variegatum4 ,s4 luteum4 ,s4 perspectivum4 ,the perspective ,solarium4 ,pl4 #bc1 fig4 #d4 ,species very carinated in their circumference2 the aperture square2 umbilicus large and crenated2 colour yellowish1 with brown and white bands on the sutures of the volutions4 ,s4 variegatum4 ,the variegated ,solarium4 ,species sub-carinated1 aperture sub-orbicular4 #b4 ,trochus4 ,the ,top ,shell4 ,sixty-nine species4 ,this genus derived its name from its resemblance to a top4 ,the shells are marine1 found in almost all parts of the world2 some are smooth1 but the greater number are covered1 with knobs1 spines1 tuberculations1 or undulations4 ,the long spines on the margin of the ,t4 ,solaris are placed at regular distances1 and resemble the rays of the sun4 ,many1 when decorticated1 look like mother-of-pearl2 others have a splendid metallic lustre4 ,the ,t4 agglutinans possesses the faculty of covering itself with extraneous substances1 such as stones1 corals1 fragments of shells1 c4 ,of this species there are two kinds1 which1 though conchologically known only by one name1 are familiarly known by two2 the ,conchologist and the ,mineralogist2 the former so called from being loaded with shells1 and the latter with stones1 c4 ,sometimes the ,conchologist is loaded with corals only1 and then is called the ,zoologist4 ,shell thick1 generally pearly1 shaped like a top1 spire sometimes depressed1 sometimes elevated and pointed at the summit1 sharp or carinated at its circumference1 umbilicated or not2 aperture depressed1 angular or sub-angular1 sometimes heart-shaped1 with edges disunited2 the right sharp2 the columella arched1 twisted1 and often projecting forward2 operculum horny1 thin1 with numerous spiral whorls1 narrow1 and increasing a little from the centre to the circumference4 ,trochus imperialis4 ,t4 longispina4 ,t4 solaris4 ,t4 ,indicus4 ,t4 radians4 ,t4 pileus4 ,t4 calyptrformis4 ,t4 fimbriatus4 ,t4 brevispina4 ,t4 rotularius4 ,t4 stella4 ,t4 stellaris4 ,t4 niloticus4 ,t4 pyramidalis4 ,t4 noduliferus4 ,t4 crulescens4 ,t4 obeliscus4 ,t4 virgatus4 ,t4 asperatus4 ,t4 rhodostomus4 ,t4 spinulosus4 ,t4 costulatus4 ,t4 inermis4 ,t4 agglutinans4 ,t4 clatus4 ,t4 tuber4 ,t4 magus4 ,t4 merula4 ,t4 argyrostomus4 ,t4 ,cookii4 ,t4 conuloides4 ,t4 conulus4 ,t4 jujubinus4 ,t4 ,javanicus4 ,t4 annulatus4 ,t4 doliarius4 ,t4 maculatus4 ,t4 granosus4 ,t4 squarrosus4 ,t4 incrassatus4 ,t4 flammulatus4 ,t4 elatus4 ,t4 marmoratus4 ,t4 ,mauritianus4 ,t4 imbricatus4 ,t4 triserialis4 ,t4 crenulatus4 ,t4 asperulus4 ,t4 acutus4 ,t4 concavus4 ,t4 lineatus4 ,t4 zizyphinus4 ,t4 granulatus4 ,t4 granatum4 ,t4 moniliferus4 ,t4 iris4 ,t4 ornatus4 ,t4 bicingulatus4 ,t4 calliferus4 ,t4 umbilicaris4 ,t4 undatus4 ,t4 ,pharaonis4 ,t4 sagittiferus4 ,t4 carneolus4 ,t4 cinerarius4 ,t4 excavatus4 ,t4 nanus4 ,t4 pyramidatus4 ,t4 erythroleucos4 ,t4 imperialis4 ,the imperial ,trochus4 ,pl4 #bc1 fig4 #f4 ,species umbilicated1 spire very depressed1 sharp and radiated at their circumference by the preservation of an angular canal from the middle of the right margin4 ,this species is rare and beautiful1 found in ,new-,zealand4 ,t4 zizyphinus4 ,the livid ,trochus4 ,species with strong transverse stri2 colour livid1 with undulated streaks of red or brownish carnation4 ,t4 agglutinans4 ,the agglutinating or ,carrier ,trochus4 ,species umbilicated1 with spire very depressed2 the base much enlarged1 and as if excavated by the large projection of the angle of the right edge1 which advances much beyond the rounded columellar edge2 generally covered with shells1 stones1 or coral4 ,t4 niloticus4 ,the large marble ,trochus4 ,species not umbilicated1 conical1 with base flat and circular2 the columella twisted2 the aperture very angular4 ,t4 obeliscus4 ,the obelisk ,trochus4 ,species not umbilicated1 conic1 elevated1 flat and circular base2 the termination of the columella strongly twisted1 but passing down by the margin1 appearing sloped by the advance of an internal longitudinal plait4 ,t4 iris4 ,the iris ,trochus4 ,species not umbilicated1 conic1 base oblique2 aperture large1 slightly angular2 the columella twisted1 and forming a kind of tooth at its termination4 ,t4 granulatus4 ,the granulated ,trochus4 ,conic1 imperforate at the base1 spirally granulated and not marginated at the edges of the volutions2 body swelling out2 spire tapering abruptly2 apex acute1 flesh-coloured4 ,t4 umbilicaris4 ,the umbilicated ,trochus4 ,shell conico-convex1 rather flat1 rounded at the top2 apex depressed1 volutions sub-marginate2 striated spirally2 aperture compressed and angular2 umbilicus large1 extending to the apex2 colour whitish4 #c4 ,monodonta4 ,twenty-three species4 ,this genus occupies an intermediate space between the ,trochus and the ,turbo2 distinguished from the former by the aperture being more round and slightly depressed1 and from the latter by the toothlike projecting angle which the truncated columella occasions at the base of the aperture4 ,shell ovate or conoid1 aperture round and entire1 with an operculum2 outer lip disunited from the body at the top2 columella arched and truncated at the base4 ,monodonta bicolor4 ,m4 pagodus4 ,m4 tectum ,persicum4 ,m4 papillosa4 ,m4 coronaria4 ,m4 ,egyptiaca4 ,m4 carchedonius4 ,m4 tectum4 ,m4 labio4 ,m4 ,australis4 ,m4 canalifera4 ,m4 viridis4 ,m4 fragarioides4 ,m4 constricta4 ,m4 modulus4 ,m4 articulata4 ,m4 lugubris4 ,m4 punctulata4 ,m4 tricarinata4 ,m4 canaliculata4 ,m4 ,seminigra4 ,m4 rosea4 ,m4 lineata4 ,m4 coronaria4 ,the crowned ,monodonta4 ,species in which the columella greatly projects1 and the spire is entirely flat2 covered with numerous small tubercles2 colour white2 the columella tinged with red4 ,m4 labio4 ,the double-lipped ,monodonta4 ,pl4 #bc1 fig4 #b4 ,species sub-globular1 umbilicated1 spiral whorls rounded2 the columella terminated by a tooth4 ,m4 fragarioides4 ,the strawberry-shaped ,monodonta4 ,species more or less globular1 of which the columella1 almost straight1 offers but a little obstacle to its junction with the margin4 #d4 ,turbo4 ,the ,turban ,shell4 ,thirty-four species4 ,distinguished from the ,monodonta by never having the columella truncated at the base2 and from the ,trochus by being solid1 with the whorls constantly convex and never flattened4 ,like the ,trochus1 when decorticated1 the ,turbo exhibits splendid pearly1 gold1 or silver irridescent colours4 ,shell thick1 pearly in the interior2 depressed1 conical1 or sub-turreted2 umbilicated or not1 little or not carinated at its circumference2 aperture round or little depressed2 the middle of the external edge not bent1 but sometimes hollowed or sloped in some part2 the edges rarely joined by a callosity2 the columella arched1 rarely twisted1 and not truncated at the base2 operculum calcareous or horny2 the spire visible externally in the latter and interiorly in the former2 the exterior often thickened and curved4 ,turbo marmoratus4 ,t4 imperialis4 ,t4 torquatus4 ,t4 diaphanus4 ,t4 rugosus4 ,t4 coronatus4 ,t4 sarmaticus4 ,t4 cornutus4 ,t4 argyrastomus4 ,t4 ,chrysostomus4 ,t4 radiatus4 ,t4 margaritaceus4 ,t4 setosus4 ,t4 ,spenglerianus4 ,t4 petholatus4 ,t4 undulatus4 ,t4 pica4 ,t4 versicolor4 ,t4 smaragdus4 ,t4 cidaris4 ,t4 crenulatus4 ,t4 hippocastanum4 ,t4 muricatus4 ,t4 littoreus4 ,t4 ustulatus4 ,t4 ,nicobaricus4 ,t4 neritoides4 ,t4 retusus4 ,t4 rudis4 ,t4 obtusatus4 ,t4 pullus4 ,t4 crulescens4 ,t4 cancellatus4 ,t4 costatus4 ,t4 pica4 ,the ,magpie ,turbo4 ,pl4 #bd1 fig4 #f4 ,species in which the aperture is oblique2 the columella losing itself entirely in its continuation with the margin1 the umbilicus always uncovered2 colour black and white4 ,t4 setosus4 ,the bristly ,turbo4 ,thick1 transversely and deeply sulcated1 longitudinally striated2 spire short1 volutions rounded1 lip crenulated2 inside pearly1 variegated with white1 green1 and brown4 ,t4 rugosus4 ,the rough ,turbo4 ,species of which the aperture is perfectly round in the direction of the axis2 the operculum horny4 #e4 ,planaxis4 ,two species4 ,shell marine1 generally small1 solid1 of an oval conical form1 oblong1 a little sloping in front2 columella flattened and truncated anteriorly2 right margin furrowed or radiated within1 and thickened by a callosity running to its origin2 operculum oval1 thin1 horny1 and sub-spiral4 ,planaxis sulcata4 ,planaxis undulata4 ,p4 sulcata4 ,the furrowed ,planaxis4 ,pl4 #bg1 fig4 #d4 ,imperforate1 furrowed transversely2 outer lip crenulated and striated internally2 colour grayish white1 spotted with black1 forming oblique longitudinal bands4 #f4 ,phasianella4 ,the ,pheasant ,snail4 ,ten species4 ,this genus of shells is celebrated for the beauty and variety of the colouring1 disposed in such a manner as to resemble the plumage of a pheasant4 ,they are marine shells1 many of which are rare and valuable2 they possess a very distinctive character1 that of a slightly projecting angle running along the columella4 ,shell rather thick1 oval1 smooth1 without epidermis1 spire pointed2 aperture oval1 larger in front1 with disunited edges2 the right sharp2 the columella uniting itself a little with the left edge1 and offering interiorly a longitudinal callosity2 operculum calcareous1 oval1 oblong1 sub-spiral1 the summit at one of its extremities4 ,phasianella bulimoides4 ,p4 rubens4 ,p4 variegata4 ,p4 elegans4 ,p4 ,peruviana4 ,p4 lineata4 ,p4 nebulosa4 ,p4 sulcata4 ,p4 ,mauritiana4 ,p4 angulifera4 ,p4 picta4 ,the painted ,phasianella4 ,pl4 #bd1 fig4 #b4 ,species smooth1 oval1 glossy1 volutions inflated2 reddish white1 with crimson or reddish brown spots2 aperture sub-ovate4 #g4 ,turritella4 ,the ,screw ,shell4 ,thirteen species4 ,this genus is easily distinguished from all screwlike shells by a sinus on the right margin of the aperture1 not existing in any other shell of similar form4 ,shell marine1 turreted1 not pearly1 rather thin1 striated according to the turning of the spire1 which is very pointed1 and has numerous whorls2 aperture rounded2 the edges disunited posteriorly2 the right extremity thin1 and1 when perfect1 having a light sinus about the middle2 operculum horny4 ,turritella duplicata4 ,t4 terebra4 ,t4 imbricata4 ,t4 replicata4 ,t4 fuscata4 ,t4 cornea4 ,t4 brevialis4 ,t4 bicingulata4 ,t4 trisulcata4 ,t4 exoleta4 ,t4 carinifera4 ,t4 ,australis4 ,t4 ,virginiana4 ,t4 bicingulata4 ,the twice-girdled ,turritella4 ,pl4 #bd1 fig4 #e4 ,species that answers to the above description4 ,t4 terebra4 ,the auger ,turritella4 ,taper1 pointed1 acute transverse stri1 the intermediate spaces prominent and acute2 white1 reddish1 or cream coloured4 ,,family ,,xvi4 ,,canalifera4 ,eleven genera4 #a4 ,cerithium4 ,thirty-six species4 ,a beautiful and numerous genus of turreted shells1 with an expanded outer lip and short beak2 the greater part are marine2 many are found at the mouths of rivers1 and a few in lakes1 though none can properly be called river shells4 ,in appearance they are like an elongated pyramidal cone1 and the spire is at least two thirds the length of the shell4 ,the exterior is seldom smooth1 but striated1 tuberculated1 granulated1 or spinous4 ,shell more or less turreted1 generally tuberculated2 aperture small1 oval1 oblique2 the columellar edge hollowed1 callous2 the right edge sharp1 and dilating a little with age2 operculum horny1 oval1 rounded1 sub-spiral1 and striated4 ,cerithium giganteum4 ,c4 palustre4 ,c4 sulcatum4 ,c4 telescopium4 ,c4 ebeninum4 ,c4 erythronense4 ,c4 muricatum4 ,c4 radula4 ,c4 crassum4 ,c4 decollatum4 ,c4 nodulosum4 ,c4 vulgatum4 ,c4 obeliscus4 ,c4 granulatum4 ,c4 aluco4 ,c4 echinatum4 ,c4 subulatum4 ,c4 heteroclites4 ,c4 zonale4 ,c4 semiferrugineum4 ,c4 torulosum4 ,c4 tuberculatum4 ,c4 morus4 ,c4 obtusum4 ,c4 semigranosum4 ,c4 asperum4 ,c4 lineatum4 ,c4 vertagus4 ,c4 fasciatum4 ,c4 ocellatum4 ,c4 literatum4 ,c4 atratum4 ,c4 eburneum4 ,c4 punctatum4 ,c4 lima4 ,c4 perversum4 ,c4 vertagus4 ,the curved beak ,cerithium4 ,pl4 #bd1 fig4 #c4 ,species with evidently a small canal1 very short1 and recurved obliquely towards the back4 ,c4 aluco4 ,the caterpillar ,cerithium4 ,species with a canal much smaller1 but entirely straight1 and a sinus well formed at the posterior union of the two edges4 ,c4 semigranosum4 ,the semi-granulated ,cerithium4 ,fusiform1 turreted2 apex acute2 the suture with double spiral rows of large granules2 minutely striated transversely1 with sulcated granulations2 colour reddish brown4 #b4 ,pleurotoma4 ,twenty-three species4 ,distinguished from the ,cerithium by having a notch or slit in the right margin4 ,shell fusiform1 rather rugged1 spire turreted2 aperture ovate1 small1 terminated by a canal variable in length2 the right edge sharp1 more or less notched2 operculum horny4 ,pleurotoma imperialis4 ,p4 auriculifera4 ,p4 muricata4 ,p4 echinata4 ,p4 fascialis4 ,p4 bimarginata4 ,p4 buccinoides4 ,p4 cingulifera4 ,p4 flavidula4 ,p4 interrupta4 ,p4 crenularis4 ,p4 cincta4 ,p4 unizonalis4 ,p4 lineata4 ,p4 spirata4 ,p4 virgo4 ,p4 ,babylonia4 ,p4 undosa4 ,p4 marmorata4 ,p4 tigrina4 ,p4 crispa4 ,p4 albina4 ,p4 nodifera4 ,p4 ,babylonia4 ,the ,tower of ,babel ,pleurotoma4 ,pl4 #bd1 fig4 #a4 ,species in which the tube is rather long1 and the notch is a little posterior to the middle of the edge4 ,p4 auriculifera4 ,the eared ,pleurotoma4 ,species in which the tube is short1 and the notch entirely against the spire4 ,p4 nodifera4 ,the knotty or ,javanese ,pleurotoma4 ,species with outer lip largely notched and deeply crenulated2 upper volution smooth2 under volution and body striated transversely1 with angulated oblique nodules at the suture2 colour reddish yellow4 #c4 ,turbinella4 ,twenty-three species4 ,by ,linnus this genus was classed with the ,voluta1 though they are more closely allied to the ,murex2 differing1 however1 from them by having no varices4 ,shell generally turbinated1 but sometimes turreted1 rugged1 and thick2 spire variable in form2 aperture elongated1 terminated by a straight canal1 often rather short2 the left edge almost straight1 and formed by a callosity which hides the columella2 the right edge entire and sharp2 the columella with two or three unequal1 almost transverse plaits4 ,turbinella scolymus4 ,t4 rapa4 ,t4 napus4 ,t4 pyrum4 ,t4 pugillaris ,t4 leucozonalis4 ,t4 rustica4 ,t4 cingulifera4 ,t4 polygonia4 ,t4 carinifera4 ,t4 rhinoceros ,t4 cornigera4 ,t4 ceramica4 ,t4 capitellam4 ,t4 mitis4 ,t4 globulus4 ,t4 infundibulum4 ,t4 craticulata4 ,t4 lineata4 ,t4 nassatula4 ,t4 triserialis4 ,t4 variolaris4 ,t4 ocellata4 ,t4 rapa4 ,the turnip ,turbinella4 ,species fusiform and almost smooth4 ,t4 scolymus4 ,the artichoke ,turbinella4 ,species turbinated and spinous4 ,t4 infundibulum4 ,the funnel-shaped ,turbinella4 ,species turreted and fusiform4 ,t4 pyrum4 ,the pear-shaped ,turbinella4 ,species with spire short1 mucronate2 apex mammiliform1 beak long2 columella with four plaits2 colour yellowish white1 with irregular reddish brown spots4 #d4 ,cancellaria4 ,twelve species4 ,this genus is not given by ,de ,blainville precisely like ,lamarck1 as he has removed those that are greatly canaliculated either to the ,murex or ,turbinella4 ,they are all marine shells1 and greatly approximate the last-mentioned genus4 ,shell oval1 globular1 ventricose1 rugged2 the spire middling1 pointed2 aperture ovate1 enlarged1 grooved1 and sometimes sub-canaliculated anteriorly2 the right edge effuse1 concave1 sharp2 the left or columellar edge almost straight1 and marked in the middle by two or three plaits2 operculum horny4 ,cancellaria reticulata4 ,c4 asperella4 ,c4 scalaria4 ,c4 scalariformis4 ,c4 nodulosa4 ,c4 cancellata4 ,c4 senticosa4 ,c4 citharella4 ,c4 spirata4 ,c4 obliquata4 ,c4 rugosa4 ,c4 ,ziervogeliana4 ,c4 reticulata4 ,the reticulated ,cancellaria4 ,pl4 #be1 fig4 #e4 ,oval1 strong1 ventricose2 columella with three plaits2 distant1 coarse1 reticulated stri2 sometimes with yellow or orange bands2 aperture white4 #e4 ,fasciolaria4 ,eight species4 ,this genus was separated by ,lamarck from the ,murex of ,linnus on account of having no varices4 ,shell fusiform or sub-fusiform2 aperture middling1 elongated1 almost symmetrical1 terminated by a rather long straight tube2 external edge sharp2 the columellar edge with two or three oblique plaits4 ,fasciolaria tulipa4 ,f4 distans4 ,f4 trapezium4 ,f4 aurantiaca4 ,f4 coronata4 ,f4 filamentosa4 ,f4 ferruginea4 ,f4 tarentina4 ,f4 tulipa4 ,the tulip ,fasciolaria4 ,pl4 #be1 fig4 #d4 ,species fusiform1 not tuberculated4 ,f4 trapezium4 ,the striped tower ,fasciolaria4 ,species fusiform1 volutions tuberculated1 ventricose2 reddish fawn coloured1 with transverse double1 slightly undulated lines2 inside of aperture with reddish stri4 ,f4 filamentosa4 ,the threaded ,fasciolaria4 ,species turreted and tuberculated4 #f4 ,fusus4 ,thirty-six species4 ,likewise taken from the ,murex2 they are marine shells1 of an elongated fusiform shape1 with whorls ventricose in the middle or at the lower extremity4 ,shell covered with epidermis1 rough1 fusiform1 or ventricose in the middle2 prolonged behind by the spire1 but particularly forward by the canal2 aperture oval2 the columellar edge straight or nearly so2 the exterior edge sharp2 operculum oval1 horny1 with sub-concentric elements1 and summit lateral4 ,fusus colosseus4 ,f4 longissimus4 ,f4 colus4 ,f4 tuberculatus4 ,f4 ,nicobaricus4 ,f4 distans4 ,f4 torulosus4 ,f4 incrassatus4 ,f4 multicarinatus4 ,f4 sulcatus4 ,f4 antiquus4 ,f4 despectus4 ,f4 carinatus4 ,f4 proboscidiferus4 ,f4 ,islandicus4 ,f4 morio4 ,f4 coronatus4 ,f4 cochlidium4 ,f4 corona4 ,f4 raphanus4 ,f4 filosus4 ,f4 polygonoides4 ,f4 verruculatus4 ,f4 lignarius4 ,f4 ,syracusanus4 ,f4 strigosus4 ,f4 varius4 ,f4 crebricostatus4 ,f4 ,afer4 ,f4 rubens4 ,f4 sinistralis4 ,f4 ,nifat4 ,f4 articulatus4 ,f4 buccinatus4 ,f4 aculeiformis4 ,f4 scalarinus4 ,f4 colus4 ,the spindle ,fusus4 ,pl4 #be1 fig4 #c4 ,species turreted or sub-turreted1 not umbilicated2 outer lip entire1 columella smooth4 ,f4 filosus4 ,the threaded ,fusus4 ,species sub-turreted and umbilicated4 #g4 ,pyrula4 ,twenty-eight species4 ,distinguished from the ,fusus by having a short depressed spire1 and the last whorl very large and ventricose1 giving this shell the shape of a pear4 ,shell pyriform by the depression of the spire1 the canal conical1 very long or middling1 sometimes a little sloped2 aperture oval1 very large2 columella smooth4 ,pyrula canaliculata4 ,p4 carica4 ,p4 perversa4 ,p4 candelabrum4 ,p4 ternatana4 ,p4 bezoar4 ,p4 rapa4 ,p4 papyracea4 ,p4 tuba4 ,p4 bucephala4 ,p4 vespertilio4 ,p4 melongena4 ,p4 reticulata4 ,p4 ficus4 ,p4 ficoides4 ,p4 spirata4 ,p4 spirillus4 ,p4 elongata4 ,p4 galcodes4 ,p4 angulata4 ,p4 squamosa4 ,p4 nodosa4 ,p4 citrina4 ,p4 abbreviata4 ,p4 neritoidea4 ,p4 deformis4 ,p4 lineata4 ,p4 plicata4 ,p4 melongena4 ,the open-mouth ,pyrula4 ,pl4 #be1 fig4 #f4 ,species ventricose1 tube or canal short2 aperture very large and effuse2 tuberculated1 striated longitudinally4 ,p4 ficus4 ,the fig ,pyrula4 ,spire very short2 volutions rounded above2 very thin and ventricose2 colour yellowish brown1 with dark brown spots2 covered with decussated stri4 #h4 ,struthiolaria4 ,two species4 ,the shells of this genus are marine1 inhabited by mollusca1 that1 by frequently moving in and out of the shell while wandering on the shore in search of food1 produce singular callosities on the two edges of the aperture4 ,they generally resemble the ,murex and ,buccinum1 but are distinguished by a thickened marginal lip on the right side4 ,shell ovate1 spire produced2 aperture sinuous1 terminated at the base by a very short canal2 straight1 and without a notch2 columellar edge callous and effuse2 right edge with a thickened varix4 ,struthiolaria nodulosa4 ,struthiolaria crenulata4 ,s4 nodulosa4 ,the nodulous ,struthiolaria4 ,pl4 #be1 fig #a4 ,ovate1 grooved and striated transversely2 top of volutions flattened and nodulous2 cream-coloured1 with undulated1 brownish-yellow longitudinal lines2 interior of lip yellowish4 #i4 ,ranella4 ,fourteen species4 ,this genus of shells has two rows of varices or thickened bands1 arranged on either side in rows1 so that it forms a distinct division between the ,struthiolaria and the ,murex4 ,shell oval1 as if depressed by the preservation of each side of a longitudinal thickened band2 aperture oval1 almost symmetrical by the excavation of the columellar edge1 terminating anteriorly by a short canal1 often a little sloping2 a sinus at the posterior junction of the two edges4 ,ranella gigantea4 ,r4 leucostoma4 ,r4 candisata4 ,r4 ,argus4 ,r4 ranina4 ,r4 spinosa4 ,r4 bufonia4 ,r4 granulata4 ,r4 granifera4 ,r4 semigranosa4 ,r4 bitubercularis4 ,r4 crumena4 ,r4 anceps4 ,r4 pygma4 ,r4 ranina4 ,the froglike ,ranella4 ,pl4 #be1 fig4 #b4 ,species not umbilicated4 ,r4 granulata4 ,the granulated ,ranella4 ,species not umbilicated4 ,r4 spinosa4 ,the prickly ,ranella4 ,species of which the varices have elongated spines2 beak sulcated2 outer lip internally crenated2 acute1 short1 distinct muricated tubercles2 fawn coloured4 #aj4 ,murex4 ,the ,trumpet ,shell4 ,sixty-six species4 ,though so greatly divided by ,lamarck1 this is a beautiful and numerous genus1 comprehending only such shells as have three or more varices on each whorl4 ,these varices show the number of times the animal has increased the size of its shell1 and what proportion is added at each increase4 ,the shells are generally irregular in form1 arising from their surfaces being usually armed with spines1 knobs1 stri1 or foliations4 ,shell generally oval2 the spire always but little elevated1 armed with longitudinal transverse varices or thickened bands2 aperture small2 very oval and symmetrical by the excavation of the left edge1 formed by a plate applied on the columella1 terminated anteriorly by a middling sized canal1 sometimes very long and close2 the right edge more or less adorned with varices2 operculum horny1 oval1 complete1 almost circular1 with sub-concentric partitions2 summit terminal4 ,murex crassispina4 ,m4 ,haustellum4 ,m4 acanthopterus4 ,m4 tenuispina4 ,m4 rarispina4 ,m4 inflatus4 ,m4 elongatus4 ,m4 palmaros4 ,m4 brevifrons4 ,m4 calcitrapa4 ,m4 adustus4 ,m4 rufus4 ,m4 axicornis4 ,m4 cervicornis4 ,m4 aculeatus4 ,m4 microphyllus4 ,m4 brassica4 ,m4 saxatilis4 ,m4 endivia4 ,m4 radix4 ,m4 melanomathos4 ,m4 hexagonus4 ,m4 scorpio4 ,m4 secundus4 ,m4 ,tarentinus4 ,m4 scaber4 ,m4 costularis4 ,m4 cornutus4 ,m4 brandaris4 ,m4 ternispina4 ,m4 brevispina4 ,m4 tenuirostrum4 ,m4 motacilla4 ,m4 asperrimus4 ,m4 phyllopterus4 ,m4 capucinus4 ,m4 tripterus4 ,m4 trigonularis4 ,m4 uncinarius4 ,m4 hemitripterus4 ,m4 gibbosus4 ,m4 triqueter4 ,m4 trigonulus4 ,m4 quadrifrons4 ,m4 turbinatus4 ,m4 trunculus4 ,m4 anguliferus4 ,m4 melonulus4 ,m4 ,magellanicus4 ,m4 lamellosus4 ,m4 erinaceus4 ,m4 cinguliferus4 ,m4 subcarinatus4 ,m4 torosus4 ,m4 polygonulus4 ,m4 vitulinus4 ,m4 angularis4 ,m4 crispatus4 ,m4 fenestratus4 ,m4 cingulatus4 ,m4 lyratus4 ,m4 concatenatus4 ,m4 granarius4 ,m4 fimbriatus4 ,m4 pulchellus4 ,m4 aciculatus4 ,m4 crassispina4 ,the thick-spined ,murex4 ,pl4 #bf1 fig4 #c4 ,species with tube very long and spiny4 ,m4 adustus4 ,the burnt ,murex4 ,pl4 #bf1 fig4 #a4 ,species with three ramified varices4 ,m4 ,haustellum4 ,the ,snipe ,murex4 ,pl4 #bf1 fig4 #d4 ,species with tube very long1 and without spines4 ,m4 acanthopterus4 ,the prickly ,murex4 ,species with three varices on each whorl4 ,m4 melanomathos4 ,the black-spined ,murex4 ,species which have whorls with more than three varices2 the tube almost close4 ,m4 lyratus4 ,the lyre-shaped ,murex4 ,species sub-turreted4 ,m4 vitulinus4 ,the young ,murex4 ,species sub-globular2 the spire and the canal rather short1 very open2 the aperture sub-effuse4 #aa4 ,triton4 ,thirty-one species4 ,in this genus the varices are in longitudinal rows or series1 but alternating1 few in number1 sometimes only one on each whorl4 ,they are never spinous or foliated1 though frequently plaited or tuberculated4 ,the ,triton variegatus type of this genus is one of the largest spiral shells4 ,shell oval1 with spire and canal straight1 middling1 generally rough1 garnished with varices1 rare1 scattered1 and preserved in longitudinal rows2 aperture sub-oval1 elongated1 terminated by a short1 open canal2 the columellar edge less hollowed than the right1 and covered with a callosity2 operculum horny1 oval1 rounded1 and rather large4 ,triton variegatus4 ,t4 nodiferus4 ,t4 ,australis4 ,t4 lampas4 ,t4 scrobiculator4 ,t4 ,spengleri4 ,t4 corrugatus4 ,t4 succinctus4 ,t4 pilearis4 ,t4 lotorium4 ,t4 femoralis4 ,t4 subdistortus4 ,t4 cancellatus4 ,t4 maculosus4 ,t4 clandestinus4 ,t4 pyrum4 ,t4 cynocephalum4 ,t4 tripus4 ,t4 canaliferus4 ,t4 retusus4 ,t4 clavator4 ,t4 tuberosus4 ,t4 vespaceus4 ,t4 chlorostomus4 ,t4 anus4 ,t4 clathratus4 ,t4 rubecula4 ,t4 cutaceus4 ,t4 dolarius4 ,t4 ,tranquebaricus4 ,t4 undosus4 ,t4 variegatus4 ,the trumpet ,triton4 ,pl4 #bf1 fig4 #e4 ,the smoothest species1 oblong1 ventricose1 tubiform2 aperture dilated2 suture of the spire crenulated2 pillar lip grooved obliquely2 colour pale purple1 clouded and spotted with brown4 ,t4 cutaceus4 ,the rough-skin ,triton4 ,species with spire rather short1 always very tuberculated1 often umbilicated2 a sinus at the posterior junction of the two edges4 ,t4 anus4 ,the grinning ,triton4 ,species similar to the ,t4 cutaceus1 but having the aperture surrounded by a thin dilated membrane and irregular teeth4 ,,family ,,xvii4 ,,alata4 ,three genera4 #a4 ,rostellaria4 ,three species4 ,lamarck formed this genus from the ,strombus of ,linnus on account of having a sinus in the lower part of the right margin contiguous to the canal4 ,the beak is generally curved1 and short in comparison to the length of the spire1 but sometimes it is straight1 and equal in length to the other part of the shell4 ,the ,r4 rectirostris is one of the most rare shells known4 ,shell sub-depressed1 turreted1 with spire produced and pointed2 aperture oval by the excavation of the columellar edge2 the right margin dilating by age1 and having a sinus contiguous to the pointed canal which terminates the shell4 ,rostellaria curvirostris4 ,r4 rectirostris4 ,r4 pes-,pelicani4 ,r4 curvirostris4 ,the curved beak ,rostellaria4 ,pl4 #bg1 fig4 #b4 ,species with the right edge digitated4 ,r4 pes-,pelicani4 ,the ,pelican's foot ,rostellaria4 ,species turreted1 with four digitations on the right edge2 body and volutions ribbed longitudinally and crowned with papill2 flesh-coloured or white4 #b4 ,pteroceras4 ,seven species4 ,formed from the ,strombus1 being distinct from it by not having the canal at the base shortened or truncated4 ,it greatly resembles the ,rostellaria1 but the sinus of the right margin is distant from the body4 ,from its digitation or long recurved claws it has often been called the ,spider ,shell4 ,shell oblong-ovate1 ventricose1 canal elongated1 attenuated1 and often closed2 right margin dilating by age into an expanded1 digitated wing1 attached to and covering a short spire1 with a sinus in the lower part not contiguous to the body4 ,pteroceras truncata4 ,p4 lambis4 ,p4 millepeda4 ,p4 pseudoscorpio4 ,p4 scorpio4 ,p4 aurantia4 ,p4 chiragra4 ,p4 chiragra4 ,the ,devil's ,claw4 ,pl4 #bh1 fig4 #c4 ,tuberculated1 with six digitated1 canaliculated rays1 closed in the adult shell2 outer lip internally striated4 ,p4 scorpio4 ,the ,scorpion ,pteroceras4 ,species with digitations on the external edge1 varying in number from six to ten4 #c4 ,strombus4 ,the ,wing ,shell4 ,thirty-two species4 ,as now defined and characterized by ,lamarck1 is easily distinguished by not having the winged aperture on the right side dentated or digitated1 and the sinus therein always separated from the canal4 ,in some species the exterior is variously striated1 smooth1 wrinkled longitudinally1 or tuberculated2 the interior presents vivid and beautiful colours4 ,these shells frequently attain a large size and great solidity4 ,shell thick1 sub-involute1 diconic1 or ventricose1 terminated like a cone before and behind2 aperture very long1 narrow1 terminated anteriorly by a canal more or less elongated1 recurved2 the edges parallel2 the external dilating with age1 offering behind a gutter at its attachment to the spire1 and before a sinus more posterior than the canal1 through which passes the head of the animal2 operculum horny1 long1 and narrow1 with elements as if imbricated2 the summit terminal4 ,strombus gigas4 ,s4 accipitrinus4 ,s4 latissimus4 ,s4 tricornis4 ,s4 ,canarium4 ,s4 ,isabella4 ,s4 vittatus4 ,s4 epidromis4 ,s4 gallus4 ,s4 bituberculatus4 ,s4 cristatus4 ,s4 dilatatus4 ,s4 bubonius4 ,s4 lentiginosus4 ,s4 auris-,dian4 ,s4 pugilis4 ,s4 pyrulatus4 ,s4 gibberulus4 ,s4 ,luhuanus4 ,s4 ,mauritianus4 ,s4 colomba4 ,s4 succinctus4 ,s4 troglodytes4 ,s4 tridentatus4 ,s4 urceus4 ,s4 plicatus4 ,s4 ,floridus4 ,s4 papilio4 ,s4 lineatus4 ,s4 marginatus4 ,s4 turritus4 ,s4 cancellatus4 ,s4 polyfasciatus4 ,the many-banded ,strombus4 ,pl4 #bh1 fig4 #b4 ,species distinguished by its bands1 and by having the margin of the outer lip thickened4 ,s4 auris-,dian4 ,diana's ,ear ,strombus4 ,oblong-ovate2 spire acute1 tuberculated1 and transversely striated2 base recurved1 outer lip thick1 anterior lobe with a finger-like termination4 ,s4 pugilis4 ,the fighting1 or thick-spined ,strombus4 ,anterior lip prominent1 rounded1 smooth2 spire crowned with spines1 the outermost whorl cancellate2 columella much reflected2 beak three-lobed1 obtuse1 flesh-coloured1 and polished within4 ,,family ,,xviii4 ,,purpurifera4 ,eleven genera4 #a4 ,cassidaria4 ,five species4 ,marine shell1 sometimes confounded with the ,cassis1 but distinguished by the canal which terminates the aperture being ascendant1 very little arched1 and not suddenly recurved4 ,shell sub-globular1 ventricose1 tuberculated1 or fluted2 spire short and pointed2 aperture long1 oval1 sub-canaliculated anteriorly2 the right edge effuse and folded back2 the columella covered over with a broad1 smooth callosity1 uniting behind to the right edge2 operculum horny4 ,cassidaria echinophora4 ,c4 ,tyrrhena4 ,c4 cingulata4 ,c4 striata4 ,c4 oniscus4 ,c4 echinophora4 ,the tuberculated ,cassidaria4 ,pl4 #bg1 fig4 #e4 ,species oval1 sub-globular1 canal sub-ascendant1 with tuberculated belts or ribs4 ,c4 ,tyrrhena4 ,the ,tyrrhenian ,cassidaria4 ,species ovate1 grooved transversely1 volutions convex2 apex with one tubercle2 tawny colour4 #b4 ,cassis4 ,the ,helmet ,shell4 ,twenty-five species4 ,this genus was formed from the ,buccinum1 from which it is easily distinguished2 the latter having only a notch at the base1 and the ,cassis with a canal abruptly turned towards the back of the shell4 ,shell inflated oval1 sub-involute1 spire very little projecting2 aperture long1 oval1 sometimes very narrow1 terminated anteriorly by a very short canal1 sloped and recurved obliquely towards the back2 the right edge more or less concave1 reflected backward1 and often dentated within2 the columella covered with a large callosity1 denticulated or wrinkled in all its length2 operculum horny4 ,cassis cornuta4 ,c4 tuberosa4 ,c4 ,madagascariensis4 ,c4 flammea4 ,c4 fascinata4 ,c4 glauca4 ,c4 rufa4 ,c4 pennata4 ,c4 testiculus4 ,c4 achatina4 ,c4 crumena4 ,c4 plicaria4 ,c4 areola4 ,c4 zebra4 ,c4 decussata4 ,c4 abbreviata4 ,c4 sulcosa4 ,c4 granulosa4 ,c4 saburon4 ,c4 canaliculata4 ,c4 pyrum4 ,c4 ,ceylanica4 ,c4 semigranosa4 ,c4 vibex4 ,c4 erinaceus4 ,c4 tuberosa4 ,the tuberous ,cassis4 ,pl4 #bh1 fig4 #e4 ,species in which the aperture is long1 the external edge almost straight1 and the spire with thickened bands4 ,c4 flammea4 ,the flaming ,cassis4 ,species in which the aperture is sub-oval1 and the external edge excavated2 spire short1 base triangular2 columella rugose2 outer lip thickened4 ,c4 areola4 ,the draught-board ,cassis4 ,smooth1 shiny1 white1 with square orange tesselated spots2 spire short and conical1 with decussated stri2 lower part of columella rugose4 #c4 ,ricinula4 ,nine species4 ,shell oval or sub-globular1 thick1 armed with points or tubercles1 with a depressed spire2 aperture narrow1 elongated1 notched1 sometimes canaliculated anteriorly1 and digitated externally2 the left edge more or less callous1 sometimes denticulated2 operculum horny1 oval1 transverse1 with elements slightly imbricated4 ,ricinula horrida4 ,r4 clathrata4 ,r4 arachnoidea4 ,r4 miticula4 ,r4 digitata4 ,r4 pisolina4 ,r4 aspera4 ,r4 morus4 ,r4 mutica4 ,r4 horrida4 ,the horrid ,ricinula4 ,pl4 #bf1 fig4 #b4 ,species without a canal2 exterior covered with strong1 obtuse black tubercles1 with the interstices white1 striated transversely2 interior rich purple colour2 outer lip with five triangular grooved radii1 between which at their base the margin is crenulated4 ,r4 digitata4 ,the digitated ,ricinula4 ,species canaliculated2 two long palmated digits at the side of the aperture4 #d4 ,purpura4 ,fifty species4 ,this genus has its name from the purple liquid produced by the animal1 from which the ancients extracted the ,tyrian purple dye4 ,this is the last genus that presents the appearance of a canal at the base of the aperture1 and therefore rightly precedes the remaining genera of this family1 all of which are without a canal4 ,shell oval1 thick1 generally tuberculated2 spire short2 the last whorl much greater than all the others united2 aperture oval1 greatly dilated1 terminated anteriorly by a canal short1 oblique1 and notched at the extremity2 the columellar edge almost straight1 covered with a callosity pointed anteriorly2 operculum horny1 flat1 almost semicircular1 with transverse stri slightly marked2 the summit behind4 ,purpura ,persica4 ,p4 ,rudolphi4 ,p4 patula4 ,p4 collumellaris4 ,p4 succincta4 ,p4 consul4 ,p4 armigera4 ,p4 bitubercularis4 ,p4 hippocastanum4 ,p4 undata4 ,p4 hmastoma4 ,p4 manicella4 ,p4 bufo4 ,p4 callosa4 ,p4 neritoides4 ,p4 planospira4 ,p4 callifera4 ,p4 coronata4 ,p4 sacellum4 ,p4 squamosa4 ,p4 rugosa4 ,p4 textilosa4 ,p4 sertum4 ,p4 ,francolinus4 ,p4 limbosa4 ,p4 ligata4 ,p4 cruentata4 ,p4 lapillus4 ,p4 imbricata4 ,p4 lagenaria4 ,p4 cateracta4 ,p4 bicostalis4 ,p4 plicata4 ,p4 fiscella4 ,p4 thiarella4 ,p4 rustica4 ,p4 carinifera4 ,p4 scalariformis4 ,p4 hystrix4 ,p4 deltoidea4 ,p4 unifascialis4 ,p4 retusa4 ,p4 trochlea4 ,p4 semi-imbricata4 ,p4 echinulata4 ,p4 clavus4 ,p4 fasciolaris4 ,p4 vexillum4 ,p4 bizonalis4 ,p4 nucleus4 ,p4 ,persica4 ,the ,persian ,purpura4 ,pl4 #bh1 fig4 #d4 ,transversely sulcated and striated between the ridges2 colour burnt-umber1 ridges yellowish1 with dark brown spots2 upper ridge and the superior edges of the volutions mucronate2 interior sulcated and striated4 ,p4 lapillus4 ,the common ,purpura4 ,species small1 white1 sometimes banded with yellow or brown1 with a scaly surface4 #e4 ,monoceros4 ,the ,unicorn4 ,five species4 ,derived its name from the long1 conical-pointed1 somewhat recurved tooth in the outer lip1 by which alone it can well be distinguished from the ,purpura2 and with this characteristic difference the description of the shell of the ,purpura will answer for this genus4 ,monoceros cingulatum4 ,m4 imbricatum4 ,m4 striatum4 ,m4 glabratum4 ,m4 crassilabrum4 ,m4 cingulatum4 ,the belted ,monoceras4 ,cylindrical1 columella not smooth1 but irregularly plaited or wrinkled1 and the tooth does not extend within the interior of the whorls as in the other species1 but appears affixed only to the edge of the lip2 volutions flattened in their upper edges2 transverse spiral brown bands4 #f4 ,concholepas4 ,one species4 ,formerly considered a ,patella1 but distinct from it on account of having an operculum4 ,it is particularly distinguished by having two teeth at the base of the right side4 ,shell wide1 rough1 oval1 spire very short1 not projecting2 aperture very large1 oval1 effuse1 sloped anteriorly2 the edges united2 the right or external very thick1 dentated2 the two teeth which limit the slope are a little larger than the others2 muscular impression visible1 and almost in form of a horseshoe2 operculum horny and rudimentary4 ,c4 ,peruvianus4 ,the ,peruvian ,concholepas4 ,pl4 #bh1 fig4 #a4 ,the type of this genus2 exterior dark brown1 interior white4 #g4 ,harpa4 ,the ,harp ,shell4 ,eight species4 ,this genus of shells is truly beautiful2 it was classed by ,linnus with the ,buccinum1 but ,lamarck considered that they were1 for their beauty1 worthy of forming a genus by themselves4 ,shell oval1 inflated1 rather thin1 with longitudinal parallel ribs1 formed by the preservation of the thickening of the right margin2 the spire very short1 pointed1 the last whorl much longer than all the others together2 aperture large1 ovate1 widely notched anteriorly2 the right edge much excavated and thickened outwardly2 the columella smooth1 and terminated in a point anteriorly4 ,harpa imperialis4 ,h4 ventricosa4 ,h4 conoidalis4 ,h4 nobilis4 ,h4 articularis4 ,h4 rosea4 ,h4 minor4 ,h4 striata4 ,h4 imperialis4 ,the imperial ,harp4 ,species in which the number of ribs far exceeds that of any other1 and occasions it often to be called the many-ridged harp2 a small spiral keel round the summit4 ,a rare and valuable species4 ,h4 nobilis4 ,the noble ,harp4 ,pl4 #bi1 fig4 #b4 ,a regular species4 ,h4 rosea4 ,the roseate ,harp4 ,oblong-ovate2 flesh coloured1 with roseate interrupted bands2 ribs remote2 columella of a fine rosy hue4 #h4 ,dolium4 ,the ,tun ,shell4 ,seven species4 ,the shells of this genus are generally large1 thin1 and globose1 with a wide aperture1 and toothed or crenated outer lip2 they have a brittle and light structure1 and although some of them grow to a very large size1 they retain their characteristic fragility and thinness4 ,shell sub-globular1 very ventricose1 thin1 encircled by decurrent flutings2 the spire very short2 the last turn much larger than all the others together2 aperture oblong1 very large1 by the great excavation of the right edge1 which is crenated through all its length2 columella twisted2 operculum unknown4 ,dolium galea4 ,d4 olearium4 ,d4 maculatum4 ,d4 fasciatum4 ,d4 pomum4 ,d4 variegatum4 ,d4 perdix4 ,d4 perdix4 ,the ,partridge ,dolium4 ,pl4 #bi1 fig4 #d4 ,species sub-umbilicated1 ovate-oblong1 thin1 thickly ribbed1 and convex2 colour reddish brown1 clouded and spotted with white4 ,d4 galea4 ,the brown ,tun4 ,species not umbilicated2 sometimes exceeds ten inches in diameter4 #i4 ,buccinum4 ,the ,whelk4 ,fifty-eight species4 ,notwithstanding the divisions of the ,linnan ,buccinum into so many different genera1 it still presents a great variety and diversity of species4 ,shell slightly covered with epidermis1 oval1 elongated2 the spire middling elevated2 aperture oblong1 oval1 notched1 and sometimes sub-canaliculated anteriorly2 the right edge thick1 not reflected2 columella simple and swelled at the upper part2 operculum horny1 complete1 oval1 with sub-concentric elements2 the summit slightly marked and marginal4 ,buccinum undatum4 ,b4 glaciale4 ,b4 ,anglicanum4 ,b4 papyraceum4 ,b4 annulatum4 ,b4 lvissimum4 ,b4 crenulatum4 ,b4 reticulatum4 ,b4 ,tranquebaricum4 ,b4 lineatum4 ,b4 fuscatum4 ,b4 lineolatum4 ,b4 maculosum4 ,b4 politum4 ,b4 suturale4 ,b4 mutabile4 ,b4 inflatum4 ,b4 retusum4 ,b4 ventricosum4 ,b4 gemmulatum4 ,b4 ,coromandelianum4 ,b4 fasciatum4 ,b4 miga4 ,b4 lyratum4 ,b4 arcularia4 ,b4 coronatum4 ,b4 ,thersites4 ,b4 pauperatum4 ,b4 neriteum4 ,b4 testudineum4 ,b4 achatinum4 ,b4 glans4 ,b4 papillosum4 ,b4 olivaceum4 ,b4 canaliculatum4 ,b4 tricarinatum4 ,b4 ,brasilianum4 ,b4 semiconvexum4 ,b4 fasciolatum4 ,b4 vinosum4 ,b4 tenuiplicatum4 ,b4 sub-spinosum4 ,b4 ,ascanias4 ,b4 lvigatum4 ,b4 flexuosum4 ,b4 aciculatum4 ,b4 corniculatum4 ,b4 cribrarium4 ,b4 grana4 ,b4 coccinella4 ,b4 zebra4 ,b4 dermestoideum4 ,b4 aurantium4 ,b4 pedicular4 ,b4 gibbolusum4 ,b4 pullus4 ,b4 marginulatum4 ,b4 polygonatum4 ,b4 undatum4 ,the common ,whelk1 or waved ,buccinum4 ,species oval1 slightly ventricose1 and sub-carinated on the whorls of the spire2 sulcated obliquely2 striated transversely and longitudinally2 volutions convex2 aperture white or yellow2 covered with a yellowish epidermis4 ,b4 papillosum4 ,the prickly-lip ,buccinum4 ,pl4 #bi1 fig4 #a4 ,species with the spire elevated1 more or less tuberculated1 the edges of the aperture separated posteriorly by a narrow1 rather deep sinus2 the right dentated anteriorly4 ,b4 reticulatum4 ,the reticulated ,buccinum4 ,species short1 ventricose1 sub-globular4 ,b4 achatinum4 ,the ,agathine ,buccinum4 ,species smooth1 the spire rather elevated2 the aperture wider anteriorly4 #aj4 ,eburna4 ,five species4 ,shell oval or elongated1 smooth2 the spire pointed1 its whorls as if rounded2 aperture ovate1 elongated1 effuse1 and widely notched anteriorly2 the right margin entire2 the columella callous posteriorly1 umbilicated1 sub-canaliculated at its external or right side4 ,eburna glabrata4 ,e4 ,ceylanica4 ,e4 spirata4 ,e4 areolata4 ,e4 lutosa4 ,e4 ,ceylanica4 ,the ,ceylon ,eburna4 ,pl4 #bi1 fig4 #c4 ,species smooth1 white1 with irregular large purplish spots2 apex acute1 tipped with blue2 sutures with an elevated line2 umbilicus filled with spines4 #aa4 ,terebra4 ,the ,needle ,shell4 ,twenty-four species4 ,this genus of shells is remarkable for their sharp1 lengthened1 and spiral form1 which obtained for them the common name of ,needles4 ,shell elongated oval1 spire pointed1 slightly elevated1 or sub-turreted2 aperture wide1 oval1 strongly notched anteriorly2 lower end of the columella twisted or oblique4 ,terebra maculata4 ,t4 flammea4 ,t4 crenulata4 ,t4 dimidiata4 ,t4 striatula4 ,t4 chlorata4 ,t4 cerithina4 ,t4 raphanula4 ,t4 muscaria4 ,t4 subulata4 ,t4 oculata4 ,t4 duplicata4 ,t4 ,babylonia4 ,t4 corrugata4 ,t4 ,senegalensis4 ,t4 crulescens4 ,t4 cingulifera4 ,t4 myuros4 ,t4 scabrella4 ,t4 strigilata4 ,t4 lanceata4 ,t4 aciculina4 ,t4 granulosa4 ,t4 vittata4 ,t4 ,buccinoides4 ,the ,buccinum-shaped ,terebra4 ,pl4 #bg1 fig4 #c4 ,answers to the above description4 ,t4 vittata4 ,the filleted ,terebra4 ,species smooth1 pale fawn coloured2 transversely striated1 with transverse purplish fillets4 ,t4 maculata4 ,the spotted ,terebra4 ,pl4 #bg1 fig4 #a4 ,species very long1 spire pointed2 aperture oval1 small1 widely notched anteriorly2 the external edge thin and sharp1 the left with an oblique thickening at its extremity4 ,,family ,,xix4 ,,columellaria4 ,five genera4 #a4 ,columbella4 ,eighteen species4 ,the shells of this genus are short1 small1 and rather thick2 found in the seas of hot countries4 ,the ,c4 mercatoria is very common on the shores of the ,atlantic in warm latitudes1 and was formerly used as money4 ,shell thick1 turbinated2 spire short1 obtuse2 aperture narrow1 elongated1 terminated by a very short canal or notch1 rendered narrow by an inflation at the inner side of the right edge1 and by some plaits on the columella2 a very small horny operculum4 ,columbella strombiformis4 ,c4 rustica4 ,c4 mercatoria4 ,c4 ,hebra4 ,c4 flavida4 ,c4 semipunctata4 ,c4 bizonalis4 ,c4 reticulata4 ,c4 pardalina4 ,c4 scripta4 ,c4 ovulata4 ,c4 nitida4 ,c4 zonalis4 ,c4 fulgurans4 ,c4 mendicaria4 ,c4 turturina4 ,c4 punctata4 ,c4 unifascialis4 ,c4 strombiformis4 ,the ,strombus-shaped ,columbella4 ,pl4 #bi1 fig4 #f4 ,the type of this genus1 partly characterized by its name4 ,c4 mercatoria4 ,the merchant ,columbella4 ,ovate1 white1 sulcated1 transversely clouded with brown or yellow2 outer lip dentated internally4 #b4 ,mitra4 ,the ,mitre ,shell4 ,eighty species4 ,a numerous and elegant genus of shells1 separated by ,lamarck from the ,voluta on account of possessing several strong distinctive characters4 ,the spire is always pointed1 and the columellar plaits1 diminishing in size1 are always transverse and parallel to each other4 ,the exterior is sometimes most beautifully marked with transverse grooves1 stri1 punctures1 or granulations2 the colour of almost every hue4 ,shell turreted1 sub-fusiform1 and oval2 the spire always pointed at the summit2 the aperture small1 triangular1 wider and strongly notched anteriorly2 the external edge sharp1 almost straight1 always longer than the columella1 which is formed by a very thin callosity1 and marked with oblique parallel plaits1 of which those anterior are the shortest4 ,mitra episcopalis4 ,m4 papalis4 ,m4 pontificalis4 ,m4 puncticulata4 ,m4 millepora4 ,m4 cardinalis4 ,m4 archiepiscopalis4 ,m4 versicolor4 ,m4 sanguinolenta4 ,m4 pediculus4 ,m4 lactea4 ,m4 cornicularis4 ,m4 lutescens4 ,m4 striatula4 ,m4 subulata4 ,m4 cornea4 ,m4 tringa4 ,m4 melaniana4 ,m4 ferruginea4 ,m4 terebralis4 ,m4 adusta4 ,m4 granulosa4 ,m4 crocata4 ,m4 casta4 ,m4 nexilis4 ,m4 olivaria4 ,m4 scabriuscula4 ,m4 granatina4 ,m4 crenifera4 ,m4 serpentina4 ,m4 tniata4 ,m4 plicaria4 ,m4 corrugata4 ,m4 costellaris4 ,m4 lyrata4 ,m4 melongena4 ,m4 cinctella4 ,m4 vulpecula4 ,m4 ,caffra4 ,m4 sanguisuga4 ,m4 stigmataria4 ,m4 filosa4 ,m4 fissurata4 ,m4 arenosa4 ,m4 clavulus4 ,m4 literata4 ,m4 ,peronii4 ,m4 obliquata4 ,m4 oniscina4 ,m4 scutulata4 ,m4 dactylus4 ,m4 fenestrata4 ,m4 crenulata4 ,m4 texturata4 ,m4 conulus4 ,m4 limbifera4 ,m4 aurantiaca4 ,m4 amphorella4 ,m4 coronata4 ,m4 paupercula4 ,m4 cucumerina4 ,m4 patriarchalis4 ,m4 muriculata4 ,m4 torulosa4 ,m4 ebenus4 ,m4 harpformis4 ,m4 semifasciata4 ,m4 retusa4 ,m4 microzonias4 ,m4 ficulina4 ,m4 nucleola4 ,m4 unifascialis4 ,m4 bacillum4 ,m4 conularis4 ,m4 plumbea4 ,m4 larva4 ,m4 pisolina4 ,m4 dermestina4 ,m4 granulifera4 ,m4 tabanula4 ,m4 episcopalis4 ,the episcopal ,mitre4 ,pl4 #ca1 fig4 #g4 ,species turreted1 with spiral whorls very wide and entire2 the aperture effuse anteriorly4 ,m4 papalis4 ,the papal ,mitre4 ,species with coronated whorls4 ,m4 pontificalis4 ,the pontifical ,mitre4 ,species covered with a yellowish epidermis1 beneath which are interrupted fillets of orange coloured spots2 spire crowned with tubercles4 ,m4 micozonias4 ,the small white-banded ,mitre4 ,species sub-ovate1 spire very short1 generally tubercled4 ,m4 dactylus4 ,the six-plaited ,mitre4 ,species oval1 spire very short1 and generally latticed4 ,m4 tniata4 ,the riband ,mitre4 ,species flaring1 turreted1 ribbed2 spire more than half the length of the shell2 aperture very narrow1 long1 sub-canaliculated1 with one plait4 #c4 ,voluta4 ,the ,volute or ,wreath4 #dd species4 ,this genus1 as established by ,linnus1 included shells of different families1 promiscuously blended together1 rendering it difficult to determine satisfactorily respecting shells under examination4 ,as arranged and classified by ,lamarck1 it is still a numerous and beautiful genus1 containing some of the most rare and costly shells1 particularly ,v4 ,junonia or ,peacock ,volute1 of which very few are known4 ,they vary considerably in size2 some are very minute1 and others large2 they are found chiefly in the seas of the torrid zone or southern hemisphere4 ,shell oval1 more or less ventricose2 the first whorls of the spire mamillose2 aperture in general much more long than wide1 strongly and obliquely notched anteriorly2 the right edge a little reflected1 entire2 the columellar edge excavated1 and adorned with great plaits1 more or less oblique1 and a little variable in number with age4 ,voluta nautica4 ,v4 diadema4 ,v4 armata4 ,v4 ducalis4 ,v4 tesselata4 ,v4 ,neptuni4 ,v4 cymbium4 ,v4 olla4 ,v4 proboscidalis4 ,v4 porcina4 ,v4 thiopica4 ,v4 melo4 ,v4 imperialis4 ,v4 pellis-serpentis4 ,v4 vespertilio4 ,v4 ,hebra4 ,v4 musica4 ,v4 chlorosina4 ,v4 lvigata4 ,v4 polyzonalis4 ,v4 nodulosa4 ,v4 magnifica4 ,v4 ancilla4 ,v4 ,magellanica4 ,v4 ,pacifica4 ,v4 fulminata4 ,v4 ,junonia4 ,v4 scapha4 ,v4 ,brasiliana4 ,v4 mitis4 ,v4 nivosa4 ,v4 serpentina4 ,v4 thiarella4 ,v4 carneolata4 ,v4 ,guinaica4 ,v4 fulva4 ,v4 sulcata4 ,v4 nucleus4 ,v4 undulata4 ,v4 lapponica4 ,v4 vexillum4 ,v4 volvacea4 ,v4 festiva4 ,v4 mitrformis4 ,v4 thiopica4 ,the thiopian ,volute4 ,pl4 #cj1 fig4 #b4 ,species large1 oval1 convex1 ventricose2 spire papillary1 with whorls coronated with elevated hollow spines4 ,v4 musica4 ,the music ,volute4 ,species oval1 marked like musical notes set in scores on its surface2 spire sub-tuberculated4 ,v4 ,magellanica4 ,the ,magellan ,volute4 ,species sub-fusiform1 elongated1 and sub-turreted2 no spines or tubercles on the whorls4 #d4 ,marginella4 ,twenty-four species4 ,distinguished from the ,voluta1 from which it was taken1 by having the outer lip thickened4 ,shell smooth1 polished1 ovate1 oblong1 sub-conic1 spire short and papillary2 aperture narrow1 sub-ovate1 by a light curve of the right edge1 which is inflated or reflected1 slightly notched anteriorly2 the columellar edge marked with three distinct oblique plaits4 ,marginella glabrella4 ,m4 radiata4 ,m4 quinqueplicata4 ,m4 limbata4 ,m4 rosea4 ,m4 lifasciata4 ,m4 faba4 ,m4 dentifera4 ,m4 dactylus4 ,m4 bullata4 ,m4 cornea4 ,m4 avellana4 ,m4 nubeculata4 ,m4 crulescens4 ,m4 aurantia4 ,m4 bivaricosa4 ,m4 longivaricosa4 ,m4 muscaria4 ,m4 eburnea4 ,m4 formicula4 ,m4 persicula4 ,m4 lineata4 ,m4 tessellata4 ,m4 interrupta4 ,m4 lineata4 ,the lineated ,marginella4 ,pl4 #cj1 fig4 #c4 ,species with aperture as long as the shell2 spire not projecting1 sometimes sunk or umbilicated4 ,m4 faba4 ,the ,bean ,marginella4 ,species with aperture shorter than the shell1 and the spire projecting4 ,m4 crulescens4 ,the cerulean ,marginella4 ,species with surface bluish white2 spire short and acute2 four plaits on the columella2 interior lip brownish purple4 #e4 ,volvaria4 ,five species4 ,the connecting genus between those shells that have a columella and those that are evolved upon their own axis4 ,distinguished from the ,marginella by not having a thickened outer lip4 ,the shells are marine1 and generally very small4 ,shell cylindrical1 convolute2 spire obsolete or concealed2 aperture narrow1 the whole length of the shell1 with one or more plaits on the columella at the lower part4 ,volvaria monilis4 ,v4 pallida4 ,v4 triticea4 ,v4 oryza4 ,v4 miliacea4 ,v4 monilis4 ,the ,necklace ,volvaria4 ,pl4 #bi1 fig4 #e4 ,species greatly involuted2 aperture very narrow and very long2 plaits on the anterior part of the columellar edge2 the exterior edge thin4 ,,family ,,xx4 ,,convoluta4 ,six genera4 #a4 ,ovula4 ,the ,egg4 #ab species4 ,this is the first genus of ,lamarck's arrangement of convoluted shells2 it is nearly allied to the ,cypra1 but easily distinguished from it by the want of spire1 and by not having teeth on the columellar lip2 the right lip is reflected inwardly1 sometimes wrinkled and sometimes smooth4 ,shell oblong1 convex1 resembling the ,cypra in form1 with the two extremities of the aperture notched1 and more or less prolonged like a tube2 the left margin dentated4 ,ovula oviformis4 ,o4 angulosa4 ,o4 verrucosa4 ,o4 hordacea4 ,o4 spelta4 ,o4 birostris4 ,o4 lactea4 ,o4 carnea4 ,o4 triticea4 ,o4 gibbosa4 ,o4 acicularis4 ,o4 volva4 ,o4 volva4 ,the ,weaver's ,shuttle4 ,pl4 #cd1 fig4 #d4 ,species in which the right edge is not thickened or dentated1 and with each extremity elongated1 producing a long1 straight tube1 which increases with age4 ,one of the most rare shells of this genus4 ,o4 oviformis4 ,the egg-shaped ,ovula4 ,pl4 #cd1 fig4 #a4 ,species ovate1 much inflated1 ventricose in the centre1 very glossy and white2 right edge dentated1 the tube of each extremity very prominent2 interior of aperture reddish purple4 ,o4 gibbosa4 ,the belted ,ovula4 ,pl4 #cd1 fig4 #b4 ,species gibbous1 neither end dentated2 tubes little marked1 and with the body of the shell encircled by a blunt keel4 ,o4 verrucosa4 ,the warty ,ovula4 ,pl4 #cd1 fig4 #c4 ,species in which the right end is dentated1 with a notch and a knob above at each extremity4 #b4 ,cypra4 ,the ,cowrie4 #fh species4 ,this genus derived its name from the ,cyprian goddess1 on account of the beauty of its polished shells4 ,they are generally smooth1 of great brilliancy of colour1 and elegantly marked with dots1 zigzag lines1 undulations1 or stripes1 and covered with an enamel-like glaze4 ,they are found buried in the sand at the bottom of the sea1 and are covered by the animal with a thin membrane1 which preserves the polish and prevents other testaceous bodies from adhering to them4 ,this membrane consists of two parts1 and arises on both sides of the shell in the form of wings1 furnishing the testaceous and colouring matter2 in some species they do not quite meet on the back of the shell1 and the uncovered space is marked by a coloured dorsal line2 when these membranous wings overlap each other1 this line is nearly obsolete4 ,these shells often differ much with age2 at first in thickness1 then because the edges are thin1 sharp1 hardly dentated1 unless internally2 and1 lastly1 sometimes in the outline2 this is because the two lobes of the mantle1 by turning over the primitive shell during the creeping of the animal1 deposite new calcareous matter4 ,de ,blainville cannot admit the hypothesis of ,bruguiere1 that these animals can completely abandon their shell to form a new one4 ,shell1 when full grown and mature1 is solid1 oval1 convex1 very smooth1 involute2 the spire entirely posterior1 very small1 often concealed by a calcareous layer deposited by the lobes of the mantle1 leaving in some species a small cavity like an umbilicus2 aperture longitudinal1 very narrow1 slightly curved1 as long as the shell1 with edges internally dentated1 and notched at each extremity4 ,shell1 when young and immature1 is very thin1 the edges of the aperture not dentated2 the right margin sharp and not reflected4 ,cypra cerina4 ,c4 exanthema4 ,c4 tigris4 ,c4 tigrina4 ,c4 ,argus4 ,c4 testudinaria4 ,c4 ,mauritiana4 ,c4 mappa4 ,c4 ,arabica4 ,c4 histrio4 ,c4 scurra4 ,c4 rattus4 ,c4 stercoraria4 ,c4 mus4 ,c4 ventriculus4 ,c4 ,aurora4 ,c4 lynx4 ,c4 adusta4 ,c4 erosa4 ,c4 caurica4 ,c4 ,isabella4 ,c4 ocellata4 ,c4 cribraria4 ,c4 turdus4 ,c4 olivacea4 ,c4 stolida4 ,c4 hirundo4 ,c4 undata4 ,c4 zigzag4 ,c4 flaveola4 ,c4 sanguinolenta4 ,c4 poraria4 ,c4 ursellus4 ,c4 asellus4 ,c4 moniliaris4 ,c4 stercus-muscarum4 ,c4 talpa4 ,c4 carneola4 ,c4 lurida4 ,c4 vitellus4 ,c4 caput-serpentis4 ,c4 cinerea4 ,c4 zonata4 ,c4 sordida4 ,c4 icterina4 ,c4 miliaris4 ,c4 variolaria4 ,c4 rufa4 ,c4 cicercula4 ,c4 lota4 ,c4 globulus4 ,c4 ovulata4 ,c4 helvola4 ,c4 ,arabicula4 ,c4 staphyla4 ,c4 pustulata4 ,c4 nucleus4 ,c4 limacina4 ,c4 moneta4 ,c4 obvelata4 ,c4 annulus4 ,c4 radians4 ,c4 oniscus4 ,c4 pediculus4 ,c4 oryza4 ,c4 coccinella4 ,c4 ,australis4 ,c4 albella4 ,c4 exanthema4 ,the measly ,cypra4 ,species oblong-ovate1 brown1 with round white spots2 dorsal line grayish2 marginal teeth brown2 spire not quite concealed4 ,c4 ,pantherina4 ,the ,panther ,cypra4 ,pl4 #ca1 fig4 #d4 ,species regular1 beautifully spotted like a panther4 #c4 ,terebellum4 ,one species4 ,shell convolute1 thin1 shining1 sub-cylindrical1 pointed behind1 truncated before2 aperture longitudinal1 edges entire1 columella truncated4 ,t4 subulatum4 ,the awl-shaped ,terebellum4 ,pl4 #ca1 fig4 #c4 ,answers to the above description1 being the only living species known4 #d4 ,ancillaria4 ,four species4 ,an intermediate genus between the ,terebellum and the ,oliva2 distinguished from the former by a callous oblique band at the base of the columella2 and from the latter by not having the spiral whorls separated by a groove4 ,shell smooth1 oval1 oblong1 pointed behind1 enlarged and truncated before2 the columella covered anteriorly by a callous oblique band2 the right lip obtuse4 ,ancillaria cinnamomea4 ,a4 ventricosa4 ,a4 marginata4 ,a4 candida4 ,a4 cinnamomea4 ,the cinnamon ,ancillaria4 ,pl4 #cj1 fig4 #e4 ,species with spire nearly obsolete2 shell chestnut colour1 with white bands2 varix of the columella reddish and somewhat striated4 #e4 ,oliva4 ,the ,olive4 ,sixty-two species4 ,an oval1 involuted1 internal shell1 distinguished from the ,ancillaria by a narrow canal continued from its upper angle around the sutures of the spiral whorls4 ,it was formerly classed with the ,voluta1 which genus has not the canal1 so that they cannot be mistaken for each other4 ,there is a callosity uniting with the spiral canal1 and another at the base of the columella4 ,shell thick1 solid1 smooth1 oval1 elongated1 sub-cylindrical2 the spiral whorls very small1 separated by a canal2 aperture long1 narrow2 the columellar edge reflected anteriorly by a callosity1 and striated obliquely through all its length4 ,the shells are generally clouded or covered with waved lines of a brownish colour1 more or less dark4 ,oliva porphyria4 ,o4 textilina4 ,o4 erythrostoma4 ,o4 pica4 ,o4 tremulina4 ,o4 angulata4 ,o4 maura4 ,o4 sepulturalis4 ,o4 fulminans4 ,o4 irisans4 ,o4 elegans4 ,o4 episcopalis4 ,o4 venulata4 ,o4 guttata4 ,o4 leucopha4 ,o4 undata4 ,o4 inflata4 ,o4 bicincta4 ,o4 harpularia4 ,o4 hepatica4 ,o4 ustulata4 ,o4 avellana4 ,o4 tessellata4 ,o4 carneola4 ,o4 espidula4 ,o4 oriola4 ,o4 candida4 ,o4 volutella4 ,o4 tigrina4 ,o4 ,brasiliana4 ,o4 utriculus4 ,o4 reticularis4 ,o4 flammulata4 ,o4 granitella4 ,o4 araneosa4 ,o4 literata4 ,o4 scripta4 ,o4 tricolor4 ,o4 sanguinolenta4 ,o4 mustelina4 ,o4 lugubris4 ,o4 funebralis4 ,o4 glandiformis4 ,o4 ,peruviana4 ,o4 ,senegalensis4 ,o4 fusiformis4 ,o4 auricularis4 ,o4 acuminata4 ,o4 subulata4 ,o4 luteola4 ,o4 testacea4 ,o4 hiatula4 ,o4 obtusaria4 ,o4 ,ceylanica4 ,o4 nebulosa4 ,o4 fabagina4 ,o4 conoidalis4 ,o4 undatella4 ,o4 eburnea4 ,o4 nana4 ,o4 zonalis4 ,o4 oryza4 ,o4 subulata4 ,the awl-shaped ,olive4 ,pl4 #cj1 fig #a4 ,species elongated1 with very projecting spire4 ,o4 undata4 ,the waved ,olive4 ,pl4 #cj1 fig4 #d4 ,species oval1 spire hardly projecting4 ,o4 cruenta4 ,the bloody ,olive4 ,species cylindrical1 suture canal deep2 fawn colour1 with triangular spots of purple1 and two dark brown spots on the edge of the outer lip4 #f4 ,conus4 ,the ,cone4 ,one hundred and eighty-one species4 ,a genus valued on account of the beauty1 symmetry1 and variety of its species2 some of its shells are very rare and remarkable for their richness of colouring2 some are coronated1 and others have a plain spire4 ,they are all covered with an epidermis1 beneath which is generally a smooth surface1 with sometimes a high polish2 a few are granulated and tuberculated4 ,they are found in great abundance in the seas of warm climates4 ,shell conic1 covered with a membranous periosteum1 thick1 solid1 involuted2 the summit of the cone anterior2 the spire little or not at all projecting2 aperture longitudinal1 very narrow1 turning towards its anterior extremity2 the external edge straight1 with oblique plaits in its anterior part2 operculum very small and horny1 sub-spiral1 with summit terminal4 ,conus marmoreus4 ,c4 ,bandanus4 ,c4 nocturnus4 ,c4 ,nicobaricus4 ,c4 araneosus4 ,c4 zonatus4 ,c4 imperialis4 ,c4 fuscatus4 ,c4 viridulus4 ,c4 regius4 ,c4 tulipa4 ,c4 geographicus4 ,c4 punctatus4 ,c4 tniatus4 ,c4 musicus4 ,c4 miliaris4 ,c4 mus4 ,c4 lividus4 ,c4 ,barbadensis4 ,c4 roseus4 ,c4 cedo-nulli4 ,c4 aurantius4 ,c4 nebulosus4 ,c4 minimus4 ,c4 sulcatus4 ,c4 ,hebrus4 ,c4 vermiculatus4 ,c4 arenatus4 ,c4 pulicarius4 ,c4 fustigatus4 ,c4 obesus4 ,c4 varius4 ,c4 millepunctatus4 ,c4 literatus4 ,c4 eburneus4 ,c4 tesselatus4 ,c4 generalis4 ,c4 ,maldivus4 ,c4 ,malacanus4 ,c4 lineatus4 ,c4 monile4 ,c4 centurio4 ,c4 vitulinus4 ,c4 vulpinus4 ,c4 flavidus4 ,c4 virgo4 ,c4 daucus4 ,c4 pastinaca4 ,c4 capitaneus4 ,c4 classiarius4 ,c4 vittatus4 ,c4 mustelinus4 ,c4 vexillum4 ,c4 ,sumatrensis4 ,c4 figulinus4 ,c4 quercinus4 ,c4 cardinalis4 ,c4 ,magellanicus4 ,c4 distans4 ,c4 pontificalis4 ,c4 ,caledonicus4 ,c4 sponsalis4 ,c4 puncturatus4 ,c4 ,ceylanensis4 ,c4 lamellosus4 ,c4 pusillus4 ,c4 exiguus4 ,c4 asper4 ,c4 hyna4 ,c4 miles4 ,c4 ammiralis4 ,c4 genuanus4 ,c4 papilionaceus4 ,c4 ,siamensis4 ,c4 ,prometheus4 ,c4 glaucus4 ,c4 ,suratensis4 ,c4 monachus4 ,c4 ranunculus4 ,c4 anemone4 ,c4 achatinus4 ,c4 cinereus4 ,c4 stramineus4 ,c4 zebra4 ,c4 lacteus4 ,c4 cingulatus4 ,c4 vicarius4 ,c4 mercator4 ,c4 ochraceus4 ,c4 betulinus4 ,c4 ,mediterraneus4 ,c4 puncticulatus4 ,c4 ,proteus4 ,c4 leoninus4 ,c4 augur4 ,c4 pertusus4 ,c4 nivosus4 ,c4 fulgurans4 ,c4 acuminatus4 ,c4 amadis4 ,c4 ,janus4 ,c4 flammeus4 ,c4 lithoglyphus4 ,c4 testudinarius4 ,c4 venulatus4 ,c4 qustor4 ,c4 muscosus4 ,c4 ,narcissus4 ,c4 ,mozambicus4 ,c4 ,guinaicus4 ,c4 ,franciscanus4 ,c4 informis4 ,c4 rattus4 ,c4 ,jamaicensis4 ,c4 amabilis4 ,c4 ,omaicus4 ,c4 nobilis4 ,c4 aurisiacus4 ,c4 terminus4 ,c4 striatus4 ,c4 gubernator4 ,c4 granulatus4 ,c4 terebra4 ,c4 verulosus4 ,c4 raphanus4 ,c4 magus4 ,c4 spectrum4 ,c4 bullatus4 ,c4 ,mauritianus4 ,c4 fumigatus4 ,c4 eques4 ,c4 luzonicus4 ,c4 catus4 ,c4 verrucosus4 ,c4 acutangulus4 ,c4 mindanus4 ,c4 ,japonicus4 ,c4 pusio4 ,c4 columba4 ,c4 madurensis4 ,c4 nemocanus4 ,c4 cancellatus4 ,c4 fusiformis4 ,c4 crulescens4 ,c4 ,aurora4 ,c4 ,taitensis4 ,c4 ,adansonii4 ,c4 tinianus4 ,c4 ,portoricanus4 ,c4 crocatus4 ,c4 strigatus4 ,c4 glans4 ,c4 mitratus4 ,c4 nussatella4 ,c4 aulicus4 ,c4 auratus4 ,c4 colubrinus4 ,c4 clavus4 ,c4 auricomus4 ,c4 omaria4 ,c4 rubiginosus4 ,c4 pennaceus4 ,c4 prlatus4 ,c4 panniculus4 ,c4 cervus4 ,c4 stercus-muscarum4 ,c4 ,timorensis4 ,c4 nimbosus4 ,c4 dux4 ,c4 tendineus4 ,c4 prfectus4 ,c4 melancholicus4 ,c4 archiepiscopus4 ,c4 canonicus4 ,c4 episcopus4 ,c4 abbas4 ,c4 legatus4 ,c4 textilis4 ,c4 pyramidalis4 ,c4 gloria-maris4 ,c4 ,australis4 ,c4 textilis4 ,the embroidered ,cone4 ,pl4 #ca1 fig4 #b4 ,species ovate1 slightly elongated2 the spire rather projecting1 pointed1 not coronated4 ,c4 imperialis4 ,the imperial ,cone4 ,species conic1 spire coronated1 projecting1 or flat4 ,c4 striatus4 ,the striated ,cone4 ,species oblong-ovate1 gibbous1 not coronated1 clouded and strongly striated transversely4 ,c4 generalis4 ,the general ,cone4 ,species conic1 spire projecting1 not crowned with tubercles2 colour reddish brown1 or clouded with orange and interrupted fillets4 ,c4 mustelinus4 ,the ,weasel ,cone4 ,pl4 #ca1 fig4 #a4 ,species with base sub-truncated2 spire channelled and banded with orange spots2 body whitish1 encircled in the middle by orange-spotted bands4 ,,family ,,xxi4 ,,nautilacea4 ,two genera4 #a4 ,spirula4 ,one species4 ,an involute1 symmetrical1 discoid shell1 whose whorls do not touch each other2 the septa or partitions are brilliant pearl1 concave externally1 pierced by a tube called the siphon or siphuncle1 placed close to the inner edge of the aperture2 covered with a thin epidermis4 ,s4 ,peronii4 ,peron's ,spirula4 ,pl4 #cf1 fig4 #b4 ,answers to the above description2 colour yellowish white4 #b4 ,nautilus4 ,two species4 ,an elegant1 well-known shell1 more or less ventricose1 discoid1 slightly compressed1 umbilicated or not1 but never papillose2 the septa simple1 transverse1 not visible externally1 the last deeply sunk and perforated by a siphon running through them all2 edges entire4 ,the ,n4 ,pompilius1 when dissected1 displays its beautiful pearly chambers2 fine specimens are often converted into drinking-cups by the ,orientals1 who sometimes remove the outer coating1 so that its whole appearance is pearly4 ,the ,nautilis varies in size2 some are microscopic2 and although they have received different names1 and on account of the animal have been made to form different genera1 it was deemed unnecessary to treat of them here4 ,nautilus ,pompilius4 ,nautilus umbilicatus4 ,n4 ,pompilius4 ,the ,pompilius ,nautilus4 ,pl4 #cf1 fig4 #c4 ,species not umbilicated2 the back rounded2 aperture round and pearly2 siphon sub-central2 pale yellow1 with chestnut streaks and undulations4 ,n4 umbilicatus4 ,the umbilicated ,pompilius4 ,pl4 #cf1 fig4 #a4 ,species umbilicated1 sub-orbicular2 pale fawn colour1 with chestnut undated transverse clouds4 ,,family ,,xxii4 ,,heteropoda4 ,two genera4 #a4 ,argonauta4 ,the ,paper ,sailor4 ,three species4 ,the shells of this genus are remarkable for their fragility1 delicacy1 and elegance2 they resemble a scroll1 ornamented with various canaliculated grooves from the summit to the margin1 which is bicarinated4 ,the colour is usually bluish1 but the keel is of a darker hue2 they vary greatly in size4 ,shell navicular1 symmetrical1 very thin1 compressed1 bicarinated1 sub-involuted longitudinally in the same plane2 aperture very large1 entire1 symmetrical1 square in front1 slightly modified by the turn of the summit1 and provided on each side with an earlike appendage1 with thick and smooth edges2 lips sharp4 ,argonauta argo4 ,a4 tuberculosa4 ,a4 nitida4 ,a4 argo4 ,the ,portuguese man-of-war4 ,pl4 #ce1 fig4 #a4 ,characterized above2 shell whitish1 fragile1 keel rather narrow1 with sharp-pointed tuberculations2 sides striated transversely1 wrinkled longitudinally4 ,a4 tuberculosa4 ,the tuberculated ,argonaut4 ,pl4 #ce1 fig4 #b4 ,species more convex at the sides1 with nodulous elevations2 keel broader1 points more obtuse4 #b4 ,carinaria4 ,the glassy ,nautilus4 ,three species4 ,in form and texture greatly resembling the ,argonauta1 but distinguished by only having one keel on the whole length of the back4 ,shell symmetrical1 carinated or not1 very thin1 slightly compressed1 without spire1 but with the summit slightly recurved posteriorly2 aperture oval and very entire4 ,carinaria vitrea4 ,c4 fragilis4 ,c4 cymbium4 ,c4 vitrea4 ,the glassy ,carinaria4 ,species very rare and beautiful1 thin1 papyraceous1 very fragile and semitransparent2 a serrated keel rises up its front1 and the sides are decorated with ribs parallel to the base4 ,c4 fragilis4 ,the fragile ,carinaria4 ,species smaller1 very thin1 striated longitudinally1 diverging from the summit to the margin2 no keel4 ,c4 cymbium4 ,the minute ,carinaria4 ,species not larger than a grain of sand4 ,,glossary ,,of ,,terms ,,used ,,in ,,conchology4 ,a4 ,abbreviated1 shortened1 cut short4 ,abdomen1 the belly4 ,aculeated1 furnished with1 or ending in1 prickles4 ,acuminated1 ending in a sharp point sharp pointed4 ,adnate1 adhering or growing together1 adjoining4 ,alated1 winged1 applied to the expanded lip of the ,strombus genus1 c4 ,ambitus1 the circumference or outline of the valves4 ,annulated1 formed or divided into distinct rings4 ,annulations1 rings4 ,antiquated1 longitudinally furrowed1 but interrupted by transverse furrows1 as if the shell had acquired new growth at each furrow4 ,aperture1 the mouth or opening of the shell4 ,apex1 the tip or point of the spire4 ,apophysis1 an excrescence4 ,approximating1 approaching near to1 or near together4 ,arcuated1 bent in the form of an arch4 ,arcuations1 bendings1 curvings4 ,area1 the surface contained between lines or boundaries4 ,arenose1 sandy4 ,areola1 a small area or circle4 ,articulations1 junctures1 or joinings4 ,ascititious1 supplemental1 additional4 ,attenuated1 thin1 slender4 ,aurated1 eared1 having ears as in the scallops4 ,auricled1 having appendages like ears4 ,auriform1 ear-shaped4 ,b4 ,barb1 anything that grows in place of a beard4 ,base1 in univalves1 that part of the shell by which it is affixed to rocks1 c41 and in multivalves the opposite extremity to the apex4 ,in univalves1 the opposite end to the apex4 ,beak1 the continuation of the body of univalves in which the canal is situated4 ,beard1 the process by which some bivalves adhere to rocks1 c4 ,bellying1 distended in the middle4 ,bi1 prefixed to any word1 signifies two4 ,biangulated1 having two corners or angles4 ,bicuspid1 having two points4 ,bidentate1 having two teeth4 ,bifid1 opening with a cleft4 ,bifarious1 parting in opposite directions4 ,bilabiate1 furnished both with an outer and inner lip4 ,bilobate1 divided into two lobes4 ,bimarginate1 furnished with a double margin as far as the lip4 ,biradiate1 having two rays4 ,bivalve1 consisting of two valves or divisions4 ,blotched1 spotted in an irregular way4 ,blunt1 obtuse1 opposed to acute4 ,borer1 a piercer4 ,brinded1 streaked4 ,bulging1 gibbous1 swollen out4 ,bullate1 of a blistered appearance4 ,byssus1 a beard1 common in the ,mytilus and ,pinna4 ,c4 ,calcareous1 relating to lime1 of a limy nature4 ,callosity1 a protuberance4 ,callus1 is composed of two short ribs1 united at the base1 and converging at the apex towards the hinder part of the shell4 ,campanulate1 bell-shaped4 ,canaliculated1 made like a pipe or gutter4 ,cancellated1 longitudinally and transversely ribbed4 ,carinate1 having a longitudinal prominence like the keel of a vessel4 ,carinated1 keeled4 ,cartilage1 a flexible fibrous substance by which the valves are united1 situated near the beak4 ,cauda1 the elongated base of the venter1 lip1 and columella4 ,cicatrix1 the glossy impression in the inside of the valves1 to which the muscles of the animal are affixed4 ,ciliate1 edged with parallel hairs1 bristles1 or appendages1 like the eyelids4 ,cinereous1 of ash colour1 of the colour of wood ashes4 ,clavate1 club-shaped1 thicker towards the top1 elongated towards the base4 ,cochle1 shells of one piece1 univalves4 ,cochleate1 twisted like a screw or the shell of a snail4 ,columella1 the upright pillar in the centre of most of the univalve shells4 ,commissure1 a joint or seam4 ,complicated1 doubled together4 ,compressed1 perpendicularly squeezed together1 in opposition to depressed1 which is horizontally flattened4 ,concamerated1 arched over1 vaulted4 ,concamerations1 divided into compartments1 as in the ,nautili4 ,concave1 hollowed out like a bowl4 ,concentric1 running to a centre4 ,conch1 shells consisting of two or more pieces or valves1 bivalves1 or multivalves4 ,cone1 the form of a sugar-loaf4 ,confluent1 running together4 ,conoid1 a figure like a cone1 sugar-loaf-shaped4 ,contorted1 twisted1 or incumbent on each other1 in an oblique direction4 ,contracted1 shortened1 shrunk up4 ,convoluted1 rolled upon itself1 twisted spirally1 like a piece of paper rolled between the finger and thumb4 ,cordate1 heart-shaped4 ,cordiform1 resembling the form of a heart4 ,coriaceous1 of a leather-like consistence4 ,corneous1 of a horn colour1 resembling a horn4 ,coronal1 relating to the crown or top4 ,coronated1 crowned1 or girt towards the apex4 ,costated1 ribbed1 having large ribs4 ,corpus1 the body of the shell1 the last or great wreath in which the aperture is situated4 ,cortex1 the anterior skin or epidermis4 ,crenulated1 notched at the margin1 scalloped4 ,crispated1 rough with waving lines4 ,cuneiform1 shaped like a wedge4 ,cylindrical1 round like a cylinder or a roller4 ,cymbiform1 boat-shaped4 ,d4 ,decorticated1 worn1 divested of epidermis or skin4 ,decussated1 generally applied to stri or lines which are crossed1 or which intersect each other perpendicularly or horizontally4 ,deflexed1 bent aside4 ,dentary1 of or belonging to the teeth4 ,dentile1 a small tooth1 such as the tooth of a saw4 ,denticulated1 set with small teeth1 as in the ,arca4 ,depressed1 pressed down horizontally1 low1 shallow1 flat4 ,dexter valve1 is the right valve4 ,diaphanous1 transparent1 clear1 pellucid4 ,digitated1 fingered or clawed1 as in the lobes of the outer lip of the ,strombi1 c4 ,disk1 the middle part of the valves1 or that which lies between the umbo and the margin4 ,divaricated1 straddling1 spreading out widely4 ,divergent1 tending to various parts or directions from one point4 ,dorsum1 the back2 it generally means the upper surface of the body of the shell1 when laid upon the aperture or opening4 ,in the genera of ,patella and ,haliotis1 the back means the upper convex surface4 ,dotted1 punctured like a thimble4 ,duplicated1 divided into plaits or folds4 ,duplicature1 a fold1 anything doubled4 ,e4 ,echinated1 bristled like a hog1 set with spines4 ,effuse1 spread out4 ,elliptical1 having the form of an ellipsis1 oval4 ,elongated1 lengthened1 drawn out4 ,emarginate1 with the edge or margin notched4 ,emarginated1 ,ensiform1 sabre-shaped4 ,entire1 whole1 uninterrupted1 not divided4 ,epidermis1 the outer coating or scarfskin of the shell4 ,equidistant1 being at the same distance4 ,equilateral1 having all sides alike4 ,equivalve1 having both valves of equal dimensions4 ,exolete1 worn or faded4 ,exserted1 standing out1 protruding4 ,extraneous1 not belonging to a particular thing4 ,f4 ,falcated1 bent or hooked like a scythe4 ,fasciated1 filleted1 or covered with bands4 ,fascicled1 clustered together as in a bundle4 ,fasciculated1 consisting of little bundles4 ,fastigate1 flat and even at top4 ,faux1 what can be seen of the cavity of the first chamber of the shell1 by looking in at the aperture4 ,ferruginous1 of an iron colour1 or rust coloured4 ,filament1 a slender threadlike process4 ,filiform1 thread-shaped1 slender1 and of equal thickness4 ,fimbriated1 fringed4 ,fissure1 a cleft1 a little slit1 or narrow chasm4 ,flexuous1 zigzag1 with angles gently winding4 ,flexure1 a bending4 ,fluviatic1 of or belonging to a river4 ,fluviatile1 belonging to fresh water4 ,foliaceous1 consisting of lamin or leaves4 ,foliated1 bent into lamin or leaves4 ,fornix1 the excavated part under the umbo4 ,it likewise signifies the upper1 or convex shell in the ,ostrea4 ,fragile1 brittle1 easily broken4 ,front1 in univalves1 when the aperture is turned towards the observer4 ,furcated1 forked4 ,furrow1 a small trench or hollow4 ,fuscated1 darkened1 obscured4 ,fusiform1 spindle-shaped1 intermediate between the conical and oval4 ,g4 ,gap1 an opening in bivalves when the valves are shut as in the ,pholades1 ,my1 c4 ,geminated1 marked with a double elevated stri connecting the wreaths4 ,geniculate1 keeled4 ,genus1 an assemblage of species possessing certain characters in common1 by which they are distinguished from all others4 ,genera1 the plural of genus4 ,gibbous1 bulged or bulging4 ,glabrous1 smooth1 having a smooth surface4 ,globose1 globular4 ,granulated1 beaded1 in small grains or beads4 ,groove1 a hollow channel4 ,h4 ,hemispherical1 in the shape of a half globe4 ,hirsute1 rough1 beset with strong hairs4 ,heteroclitical1 synonymous with heterostrophe4 ,heterostrophe1 reversed1 applied to shells whose spires turn in a contrary direction to the usual way4 ,hispid1 hairy4 ,i ,j4 ,jagged1 denticulated1 uneven1 toothed like a saw4 ,imbricate1 placed like the tiles of a house4 ,imperforated1 not pierced with a hole1 wanting an umbilicus4 ,inequilateral1 when the anterior and posterior sides make different angles with the hinge4 ,inequivalve1 where one valve is more convex than the other1 or dissimilar in other respects1 as in the common oyster4 ,inarticulate1 indistinct1 not properly formed4 ,incumbent1 one lying over the other4 ,incurved1 bent inward1 crooked4 ,incurvated1 ,indented1 unequally marked1 hollowed4 ,inflated1 tumid1 swollen1 as if blown out4 ,inflected1 bent inward4 ,indexed1 bent towards each other4 ,intercostal1 placed between the ribs4 ,internode1 the space between one knot or joint and another4 ,interrupted1 divided1 separated4 ,interstice1 space between one part and another1 a crevice4 ,intortion1 the turning or twisting in any particular direction4 ,involucre1 a covering4 ,involution1 that part which involves or inwraps another4 ,involute1 where the exterior lip is turned inward at the margin1 as in the ,cypra4 ,isabella-colour1 a brownish yellow with a shade of brownish red4 ,juncture1 the joining of the whorl in univalve shells4 ,k4 ,keel1 the longitudinal prominence in the ,argonauta4 ,knob1 a protuberance1 any part bluntly arising above the rest4 ,l4 ,labra1 the lips4 ,laciniate1 jagged or cut into irregular segments4 ,lacunose1 having the surface covered with pits4 ,lamellar1 consisting of films on plates4 ,lamellated1 divided into distinct plaits or foliations4 ,lamin1 thin plates1 laid one coat above another4 ,lanceolate1 oblong1 and gradually tapering like the head of a lance4 ,lateral1 extending to one side from the centre4 ,latticed1 having longitudinal lines or furrows1 decussate by transverse ones4 ,lenticulate1 doubly convex1 of the form of a lens4 ,ligament1 a solid body1 softer than a cartilage1 but harder than a membrane1 which connects the valves in bivalves4 ,limb1 the margin of bivalve shells4 ,linear1 composed of lines4 ,lineate1 marked with lines4 ,lip1 the outer edge of the aperture of univalves4 ,littoral1 of or belonging to the shore4 ,lobated1 rounded at the edges4 ,longitudinal1 the length of the shell from the apex to the base4 ,lubricity1 slipperiness1 smoothness of surface4 ,lunated1 formed like a half moon4 ,lunulated1 crescent-shaped4 ,lunule1 a crescent-like mark or spot1 situated near the anterior and posterior slopes in bivalve shells4 ,luniform1 in the shape of a crescent4 ,m4 ,margin1 the whole circumference or outline of the shell in bivalves4 ,marginated1 having a prominent margin or border4 ,membrane1 a web of several sorts of fibres4 ,membranaceous1 consisting of membranes4 ,mottled1 clouded or spotted with various colours4 ,mucronate1 ending in a sharp rigid point4 ,multilocular1 many-chambered1 consisting of several divisions4 ,muricated1 clothed with sharp spines4 ,n4 ,nacred1 pearly1 pearlaceous4 ,nemoral1 of or belonging to a wood4 ,nited1 glossy4 ,nodose1 knotty4 ,nucleus1 a kernel4 ,o4 ,ob1 prefixed to words1 is used for inversely or inverted2 as obconic1 inversely conic2 obcordate1 inversely heart-shaped4 ,oblong-ovate1 egg-shaped or oval4 ,obsolete1 indistinct1 not well defined4 ,ocellated1 applied to eyelike spots4 ,ochreous1 of the colour of yellow ochre4 ,offuscated1 darkened1 clouded1 dimmed4 ,olivaceous1 being of a greenish olive colour4 ,operculum1 a lid which closes the aperture of some turbinated univalves2 and also some of the tops of multivalves4 ,orbicular1 spherical1 circular1 round4 ,order1 the second division of the animal kingdom4 ,orders are made up of a plurality of genera4 ,orifice1 an opening or perforation4 ,ovate1 shaped like the longitudinal section of an egg4 ,ovoid1 oval4 ,p4 ,palmated1 webbed1 as in the feet of some water-birds4 ,papill1 small dots or pimples4 ,papillary1 having the surface covered with dots or pimples4 ,papillous1 ,papillose1 pimpled1 dotted4 ,papyraceous1 thin as paper4 ,parasitical1 living on some other body4 ,patulous1 with a gap or opening4 ,pearlaceous1 of or like mother-of-pearl4 ,partitions1 calcareous processes1 dividing the shells of the genus ,nautilus1 ,serpula1 c4 ,pectinated1 resembling the teeth of a comb4 ,pedicle1 the support of the ,lepas ,anatifera1 and its corresponding species1 by which they are attached to wood1 c4 ,peduncle1 a foot-stalk or tube on which anything is seated4 ,pediform1 foot-shaped4 ,pelagic1 belonging to the deep sea4 ,pellicle1 the skin or film4 ,pellucid1 transparent1 clear1 bright4 ,pentagonal1 having five angles4 ,perforated1 pierced with holes4 ,pervious1 admitting passage4 ,phosphorescent1 emitting light in the dark4 ,pillar1 in univalves is the internal continuation of the columella or inner lips1 and extends from the base to the apex4 ,pinnated1 winged4 ,plaited1 folded4 ,plaits1 folds4 ,plicated1 folded or plaited1 as in the pillar of the volute tribe4 ,plumose1 having a feathery appearance4 ,polythalmous1 divided into several chambers4 ,porcate1 marked with raised longitudinal lines4 ,porrected1 projecting4 ,prismatic1 generally applied to the colours of shells1 being like those of the prism2 iridescent4 ,produced1 lengthened out4 ,protrude1 to thrust forward4 ,protuberances1 plaits higher or more elevated than the parts adjoining4 ,punctuated1 with small hollows like the punctures of a thimble4 ,pyriform1 pear-shaped4 ,q4 ,quadrangular1 having four right angles4 ,quadruplicated1 having four plaits4 ,r4 ,radiated1 furnished with rays4 ,radicated1 is when the shell is fixed by the base to another body4 ,rectangular1 having right angles4 ,recurvated1 turned backward4 ,recurved1 bowed back4 ,reflected1 thrown backward1 or bent back4 ,reflex1 the same as recurvated4 ,reflexed1 ,refracted1 abruptly bent1 as if broken4 ,reniform1 kidney-shaped4 ,repand1 with a serpentine margin4 ,replicated1 folded or plaited1 so as to form a groove or channel4 ,reticulated1 formed like a piece of network4 ,retroflected1 bent backward4 ,retrousse1 cocked up1 turned up4 ,retroverted1 turned back4 ,retuse1 ending in an obtuse sinus4 ,rotundated1 blunted1 or turned at the edge4 ,reversed spire1 is when the volutions turn the reverse way of a common corkscrew1 or to the sun's apparent motion4 ,revolute1 rolled backward4 ,ribbed1 having longitudinal or transverse ridges4 ,ridge1 the upper part of a slope4 ,rima1 the interstice between the valves when the hymen is removed4 ,rostrum1 the beak2 the extension of the shell1 in which the canal is situated4 ,rotund1 round1 circular1 spherical4 ,rudimentary1 the commencement or first elements of anything2 generally applied to the indistinct teeth of shells4 ,rufous1 of a reddish colour4 ,rugose1 rugged1 full of wrinkles4 ,s4 ,sanguinaceous1 of a blood colour1 or resembling blood4 ,scabrous1 rough1 rugged1 harsh1 or like a file4 ,scalloped1 indented at the edges4 ,scrobiculate1 pitted1 having the surface covered with hollows4 ,scorbiculous1 a depression or cavity4 ,scutellated1 shield-shaped4 ,scutelliform1 ,seam1 the line formed by the union of the valves4 ,semi1 is used in composition in the sense of half4 ,semi-cordate1 half heart-shaped4 ,semi-cylindrical1 half cylindrical1 cut through lengthways4 ,semi-orbicular1 the shape of a half globe4 ,semi-lunar1 the shape of a half moon4 ,semi-pellucid1 somewhat pellucid or shining4 ,septiform1 in the shape of a partition4 ,serrated1 like the teeth of a saw4 ,serrulated1 very minutely serrated4 ,sessile1 sitting or seated4 ,seta1 a bristle4 ,setaceous1 bristly1 covered with bristles4 ,setiferous1 bearing bristles4 ,setose1 covered with bristles4 ,sinister valve1 is the left valve4 ,sinus1 a groove or cavity4 ,siphunculus1 a cylindrical canal perforating the partitions in polythalmous shells2 for instance1 as in the ,nautilus ,spirula4 ,solitary1 generally applied to a single tooth in bivalves4 ,spatulate1 rounded and broad at the top1 and becoming narrow like a spatula or battledore4 ,species1 the division of a family or genus1 containing such as agree with it in general characters1 or such as are derived from one common parentage4 ,spiny1 thorny1 covered with thornlike processes4 ,spinous1 having spines like a hedgehog4 ,spire1 all the whorls of univalve shells1 excepting the one in which the aperture is situated1 which is termed the body4 ,spiral1 twisted like a corkscrew4 ,squamose1 scaly4 ,stellated1 starred1 consisting of star-like figures4 ,striated1 scored1 or covered with fine threadlike lines4 ,sub1 in composition1 means almost1 or approaching to2 as sub-globose1 somewhat globular4 ,subarcuated1 somewhat arched4 ,sub-conic1 somewhat conical4 ,sub-diaphanous1 somewhat transparent or clear4 ,sub-rotund1 nearly globular4 ,subulate1 awl-shaped4 ,sulcated1 furrowed4 ,sulci1 furrows or ridges4 ,summit1 the tip or apex4 ,sature1 a hollow line of division in univalve shells1 the spiral line of which separates the wreaths4 ,t4 ,tentacula1 the feelers of snails which inhabit shells4 ,tesselated1 checkered like a chessboard4 ,testacea1 the third order of worms1 including those which are covered with a testaceous shell4 ,testaceous1 consisting of carbonate of lime and animal matter4 ,tetragonal1 four cornered4 ,torose1 swelling into knobs or protuberances4 ,tortuosity1 wreath1 flexure4 ,tortuous1 twisted1 wreathed1 winding4 ,transverse1 placed across or crossways4 ,when the breadth of a shell is greater than its length1 it is called transverse4 ,trapeziform1 shaped like a trapezium4 ,trigonal1 having three angles4 ,truncated1 stunted1 cut short or abruptly off at the end4 ,tubercle1 a little knot or pimple4 ,tuberculated1 knotted1 pimpled4 ,tuberosities1 prominent knots or excrescences4 ,tubular1 in the shape of a hollow tube4 ,tubulate1 tubulous or hollow4 ,tunicated1 coated4 ,turbinated1 shaped like a top or pear4 ,turgid1 swollen4 ,u ,v4 ,valve1 the whole of univalve shells1 of shells in one piece2 and the half of bivalves1 or shells in two divisions1 c4 ,varices1 longitudinal ribs in univalve shells4 ,variety1 is when one species differs some little degree from that of another4 ,vaulted1 like the roof of one's mouth4 ,venter1 the belly1 situated in the body of the shell2 being the most prominent part when the aperture is turned to the observer4 ,ventral1 belonging to the belly4 ,ventricose1 inflated1 swelled in the middle4 ,vermiform1 worm-shaped4 ,vertex1 in the ,patella the top or most prominent part1 situated in general nearly in the middle4 ,in the genus ,bulla it is used for the apex4 ,verrucose1 warted4 ,verticulated1 whorled4 ,umbilicated1 having a depression in the centre like a navel4 ,umbo1 in bivalve shells1 the round part which turns over the hinge4 ,umbonate1 bossed1 having a raised knob in the centre ,undulated1 waved1 having a waved surface4 ,ungulate1 shaped like a horse's hoof4 ,unilocular1 with a single chamber or compartment4 ,univalve1 shells consisting of one valve or piece4 ,volutions1 the wreaths or turnings of the shells of univalves4 ,urceolate1 swelling in the middle like a pitcher4 ,vulva1 a spatulated mark in several bivalve shells2 formed when the valves are united on the posterior and anterior slopes4 ,w4 ,whorl1 one of the wreaths or turnings of the spire of univalves4 ,z4 ,zigzag1 having contrary turnings and windings4 ,zoned1 surrounded with one or more girdles4 ,,index ,,to ,,the ,,classes1 ,,families1 ,,genera1 ,,and ,,plates4 ,n4,b4--,the ,classes are printed in ,small ,capitals1 the ,families in ,italics1 and the ,genera in the ,ordinary ,type4 ,a4 ,class4 ,fam4 ,gen4 ,plate4 ,fig4 ,page4 ,acasta #b #a #d #bj ,acera #d #d #a #aja ,achatina #d #g #h #ah #a-c #aac ,alata #d #ag #c #adi ,amphidesma #c #e #g #f #i #ci ,amphitrita #a #c #d #ac ,amphitrite #a #c #d #ad ,ampullaria #d #aj #c #ba #c #abj ,anostoma #d #g #c #aji ,anatifera #b #a #g #d #e #ba ,anatina #c #d #b #ab #e #cc ,ancillaria #d #bj #d #cj #e #afi ,ancylus #d #c #g #cb #c #aja ,,annelides #a #d #aa ,anodonta #c #ac #c #aa #b1 #c #fh ,anomia #c #ai #e #af #a #hi ,aplysiacea #d #e #b #ajc ,aplysia #d #e #a #ajc ,arca #c #aa #b #aj #e #fc ,arenicola #a #a #a #aa ,arcacea #c #aa #d #fa ,argonauta #d #bb #a #ce #a1 #b #agf ,aspergillum #c #a #a #cc #c #bc ,auricula #d #g #aj #ai #f #aae ,avicula #c #ag #d #ad #c #gi ,b4 ,balanus #b #a #c #d #a #ai ,brachiopoda #c #bj #c #hi ,buccinum #d #ah #i #bi #a #aei ,bulimus #d #g #g #ai #g #aab ,bulla #d #d #c #ag #g #ajb ,bullacea #d #d #c #aja ,bulla #d #d #b #ag #e #ajb ,c4 ,calyptracea #d #c #g #ig ,calyptra #d #c #e #cb #d #ajj ,canalifera #d #af #aa #ach ,cancellaria #d #af #d #be #e #adb ,capsa #c #h #i #h #g #di ,cardiacea #c #aj #e #eg ,cardita #c #aj #b #aj #c #ei ,cardium #c #aj #a #aj #b #eh ,carinaria #d #bb #b #agf ,carocolla #d #g #b #ai #a #ajh ,cassidaria #d #aj #a #bg #e #aeb ,cassis #d #ah #b #bh #e #aec ,castalia #c #ab #b #aa #e #fe ,chama #c #ad #a #ab #b #fi ,cerithium #d #af #a #bd #c #aci ,chamacea #c #ad #c #fi ,chiton #d #b #c #a #a-d #ie ,chitonellus #d #b #b #ic ,cineras #b #a #i #bb ,,cirrhipedes #b #a #ag ,cirrhipedes #b #a #aj #ag ,clausilia #d #g #f #ai #c #aaa ,clavagella #c #a #b #bc ,cleodora #d #a #c #ib ,clio #d #a #b #ib ,clymene #a #b #a #ab ,colimacea #d #g #aa #aje ,columbella #d #ai #a #bi #f #afa ,columellaria #d #ai #e #afj ,conchacea #c #i #g #di ,,conchifera #c #bj #bc ,convoluta #d #bj #f #aff ,conus #d #bj #f #ca #a1 #b #agd ,corbis #c #h #f #h #a #df ,corbula #c #f #a #f #f #ci ,corbulacea #c #f #b #ci ,concholepas #d #ah #f #bh #a #aef ,coronula #b #a #b #d #c #ai ,crania #c #ai #f #af #d #hi ,crassatella #c #e #c #f #d #cg ,crassina #c #h #aj #f #a #di ,crenatula #c #ag #a #ad #b #gf ,crepidula #d #c #f #cb #b #aja ,creusia #b #a #e #d #b #bj ,cuculla #c #aa #a #aj #a #fa ,cyclas #c #i #a #i #g #ej ,cyclostoma #d #g #aa #ai #e #aaf ,cymbulia #d #a #e #ic ,cyrena #c #i #b #f #g #ea ,cypra #d #bj #a #cd #d #afi ,cypricardia #c #aj #c #aj #f #fj ,cyprina #c #i #d #i #b #eb ,cytherea #c #i #e #i #d #ed ,d4 ,delphinula #d #ad #c #bc #e #aca ,dentalium #a #b #b #cc #a #ab ,dolabella #d #e #b #ajc ,dolium #d #ah #h #bi #d #aeg ,donax #c #h #h #h #d #dh ,dorsali #a #a #b #aa ,e4 ,eburna #d #ah #aj #bi #c #aei ,emarginula #d #c #b #cb #e #ih ,erycina #c #e #d #f #e #cg ,etheria #c #ad #b #aa #a #ga ,f4 ,fasciolaria #d #af #e #be #d #adb ,fissurella #d #c #c #cb #a #ii ,fistulana #c #a #c #cc #e #bd ,fusus #d #af #f #be #c #adc ,g4 ,galathea #c #i #c #f #h #ea ,galeolaria #a #d #d #af ,gastrochna #c #b #b #c #a #bh ,glycimeris #c #c #d #ca ,gryphea #c #ai #a #af #b #he ,h4 ,haliotis #d #ab #d #bb #d1 #f #abg ,harpa #d #ah #g #bi #b #aef ,helicina #d #g #d #ai #d #aji ,helix #d #g #a #ah #d-i #ajg ,heteropoda #d #bb #b #age ,hiatella #c #aj #d #aj #d #fj ,hippopus #c #ae #b #ab #a #gb ,hyala #d #a #a #ib ,hyria #c #ac #b #e #d #fg ,i4 ,iridina #c #ac #d #fi ,isocardia #c #aj #e #ab #d #fa ,j4 ,janthina #d #aa #e #ah #f #abe ,l4 ,lima #c #ah #b #ae #c #hj ,limacinea #d #f #e #ajd ,limacina #d #a #d #ic ,limax #d #f #c #ajd ,lingula #c #bj #c #ag #b #ia ,l4 ,lithophagi #c #g #c #dj ,lucina #c #h #g #h #h #dg ,lutraria #c #e #a #cc ,lymncea #d #h #c #aaf ,lymna #d #h #c #ba #a #aag ,m4 ,mactracea #c #e #g #cc ,mactra #c #e #b #i #f #cf ,macrostomides #d #ab #d #abe ,magilus #a #d #e #af ,malleacea #c #ag #e #gf ,malleus #c #ag #c #ad #d #gh ,maldani #a #b #b #ab ,marginella #d #ai #d #cj #c #afe ,melanides #d #i #c #aag ,melania #d #i #a #bj #c #aah ,melanopsis #d #i #b #bj #f #aah ,meleagrina #c #ag #e #gi ,mitra #d #ai #b #ca #g #afb ,modiola #c #af #b #ab #f #gd ,,mollusca #d #bb #ib ,monoceros #d #ah #e #aee ,monodonta #d #ae #c #bc #b #ace ,murex #d #af #aj #bf #a1 #c1 #d #adg ,myaria #c #d #b #cb ,mya #c #d #a #e #a1 #c #cb ,mytilus #c #af #a #gc ,mytilacea #c #af #c #gh ,n4 ,naiades #c #ac #d #ff ,natica #d #aa #d #ba #f #abd ,nautilacea #d #ba #b #agd ,nautilus #d #ba #b #cf #a1 #c #age ,navicella #d #aa #b #abb ,nerita #d #aa #c #ba #e #abc ,neritina #d #aa #a #ba #b1 #d #aba ,neritacea #d #aa #e #aba ,nucula #c #aa #d #aa #g #fd ,nymphacea #c #h #aj #db ,o4 ,oliva #d #bj #e #cj #a1 #d #aga ,onchidium #d #f #a #ajd ,orbicula #c #bj #a #ag #d #ij ,ostrea #c #ai #b #af #e #hg ,ostracea #c #ai #f #he ,otion #b #a #aj #bb ,ovula #d #bj #a #cd #a-d #aff ,p4 ,paludina ,parmacella #d #f #b #ajd ,parmophora #d #c #a #ig ,patella #d #b #d #b #a-g #ie ,pandora #c #f #b #f #c #dj ,panopa #c #c #b #e #b #ca ,pecten #c #ah #c #ae #d #hb ,pectinaria #a #c #a #ac ,pectunculus #c #aa #c #aa #f #fd ,pedum #c #ah #a #ae #e #hj ,pectinides #c #ah #g #hj ,peristomides #d #aj #c #aai ,perna #c #ag #b #ad #a #gg ,petricola #c #g #b #g #c #da ,phasianella #d #ae #f #bd #b #acg ,pholas #c #b #a #c #b-e #bg ,pholadaria #c #b #b #bf ,physa #d #h #b #bj #b #aag ,phyllidia #d #b #a #ic ,phyllidiacea #d #b #d #ic ,pirena #d #i #c #aai ,pinna #c #af #c #ac #a1 #b #ge ,pileopsis #d #c #d #ii ,planorbis #d #h #a #bj #d #aaf ,plicacea #d #ac #b #abh ,planaxis #d #ae #e #bg #d #acf ,placuna #c #ai #d #af #c #hh ,pleurotoma #d #af #b #bd #a #adj ,plicatula #c #ah #e #ae #b #hc ,plagiostoma #c #ah #d #hc ,pneumodermon #d #a #f #ic ,pollicipes #b #a #h #d #d1 #f #bb ,podopsis #c #ah #g #he ,psammobia #c #h #b #g #a #dc ,psammota #c #h #c #g #e #dc ,pteroceras #d #ag #b #bh #c #aej ,pteropoda #d #a #f #ib ,pupa #d #g #e #ah #e #aaj ,pupa #d #g #ae #ai #b #aaa ,purpura #d #ah #d #bh #d #aee ,purpurifera #d #ah #a #aea ,pyramidella #d #ac #b #bb #e #abi ,pyrula #d #af #g #be #f #add ,pyrgoma #b #a #f #ba ,r4 ,ranella #d #af #i #be #b #ade ,ricinula #d #ah #c #bf #b #aec ,rostellaria #d #ag #a #bg #b #adi ,s4 ,sabellaria #a #c #b #cc #b #ac ,sanguinolaria #c #h #a #g #d #db ,saxicava #c #g #a #g #f #dj ,scalaria #d #ad #d #bc #a #acj ,scalarides #d #ad #c #abi ,septaria #c #a #d #be ,serpula #a #d #b #ad ,serpulacea #a #d #e #ad ,sigaretus #d #ab #a #bb #b #abf ,siliquaria #a #a #b #cc #d #aa ,solarium #d #ae #a #bc #d #aca ,solecurtus #c #c #c #ca #f #ca ,solen #c #c #a #ca #e #bi ,solenides #c #c #d #bi ,solenimya #c #e #f #f #b #ch ,spirorbis #a #d #a #ad ,spirula #d #ba #a #cf #b #age ,spondylus #c #ah #f #ae #a #hd ,stomatella #d #ab #b #bb #a #aea ,stomatia #d #ab #c #bb #f #add ,strombus #d #ag #c #bh #b #abf ,struthiolaria #d #af #h #be #a #abf ,succinea #d #g #i #bd #d #aad ,t4 ,tellina #c #h #d #h #e #de ,tellinides #c #h #e #h #c #df ,terebella #a #c #c #ad ,terebellum #d #bj #c #ca #c #afi ,terebra #d #ah #aa #bg #a1 #c #afj ,terebratula #c #bj #b #ag #a #ij ,teredo #c #a #f #be ,teredina #c #a #e #be ,testacella #d #f #d #ag #f #ajd ,tornatella #d #ac #a #bb #c #abh ,trochus #d #ae #b #bc #f #acc ,tridacna #c #ae #a #ab #c #ga ,tridacnites #c #ae #b #ga ,trigonia #c #ab #a #aa #d #fe ,trigonacea #c #ab #b #fe ,triton #d #af #aa #bf #e #adh ,tubicola #c #a #f #bc ,tubicinella #b #a #a #ah ,turbo #d #ae #d #bd #f #acf ,turbinacea #d #ae #g #aca ,turbinella #d #af #c #adj ,turritella #d #ae #g #bd #c #aci ,u4 ,v4 ,ungulina #c #e #e #cg ,unio #c #ac #a #h #f #fg ,valvata #d #aj #a #bj #e #aai ,venericardia #c #i #g #i #a #eg ,venerirupis #c #g #c #g #b #db ,venus #c #i #f #h #b1 #c #ef ,vermilia #a #d #c #ae ,vermetus #d #ad #a #bc #c #abi ,vitrina #d #f #e #ag #c #ajd ,voluta #d #ai #c #cj #b #afd ,volvaria #d #ai #e #bi #e #afe ,vulsella #c #ai #c #ae #f #hg ,illustration3 ,pl4 #a4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #b4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #c4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #d4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #e4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford4 ,illustration3 ,pl4 #f4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #g4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #h4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #i4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #aj4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #aa4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #ab4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #ac4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #ad4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #ae4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #af4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #ag4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #ah4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #ai4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #bj4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #ba4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #bb4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #bc4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #bd4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #be4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #bf4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #bg4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #bh4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #bi4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #cj4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #ca4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #cb4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #cc4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #cd4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #ce4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ,illustration3 ,pl4 #cf4--,lith4 of ,d4 ,w4 ,kellogg ,co4 ,hartford1 ,ct4 ---------------------------------------- -------------------------------- ,,transcriber',s ,,notes #a4 ,p4 iv1 changed 8muscles0 to 8mussels0 and 8die0 to 8dye04 #b4 ,p4 #ga1 changed 8,clamp0 to 8,clam04 #c4 ,p4 #aed1 changed 8die0 to 8dye04 #d4 ,p4 #agd1 changed 8,o4 legatus40 to 8,c4 legatus404 #e4 ,silently corrected typographical errors4 #f4 ,retained anachronistic and non-standard spellings as printed4 #g4 ,enclosed italics font in underscores4