C A R D I U M 



Plate XIV. 



Species 67. (Mus. Cuming.) 

 Cardium Dupiichense. Curd, testa orbiculari-ovatd, cras- 

 siusculd, radiatim costatd, costis quaternis senisve et 

 viginti grandibus, prominentibus, subdistantibus, postre- 

 mis muricatis, mediants lavibus, postvcl subtilissime ere- 

 nulatis, cceteris rugoso-crenatis ; alia, epidermide lutes- 

 cente-fuscd indutd, intus vivide purpureo-rubrd. 

 The Dupuch Cockle. Shell orbicularly ovate, rather 

 thick, radiately ribbed, ribs tour or six and twenty in 

 number, large, prominent, rather distant, extreme pos- 

 terior ribs prickly, middle ribs smooth, posteriorly very 

 finely crenulated, the rest rugosely crenated; white, 

 covered with a yellowish brown epidermis, bright pur- 

 ple crimson within. 

 Reeve, Pro. Zool. Soc, IS 15. 



lluli. Island of Dupuch, Torres Straits (found on the reefs 

 at low water); Dring, II. M. S. Beagle. 

 The sculpture and general external character of this 

 shell are very similar to those of the following species ; it 

 is, however, of a shorter and more orbicular form, and sin- 

 gularly characterised by its deep crimson interior. 



Species 68. (Mus. Cuming.) 



( 'akiiiI'M Lsroosl'M. Card, lestuobluiiiju-orutd, erussiuscutu, 

 radiatim costatd, costis octonis et viginti ad tricenis, 

 interstitiis profundi excavatis ,• costis postremis muri- 

 cato-squamosis, medianis lavibus, postice cremtlatis, an- 

 tick rugoso-crenatis ; albidd, rufo maculato-fasciatd. 



THE rugose Cockle. Shell oblong-ovate, rather thick, 

 radiately ribbed, ribs from eight and twenty to thirty 

 in number, interstices deepl) excavated ; extreme pos- 

 terior ribs prickly scaled, middle ribs smooth, poste- 

 riorly crenulated, anterior rugosely crenated; white, 

 banded with faint red spots. 



Lamarck, Anim. sans vert. (Deshayes' edit.), vol.iv. p.400. 

 Cardium magnum, Chemnitz. 



Hub. Ceylon, Nicobar, Madagascar, &c. 



The deep interstices between the ribs of this species give 



them an exceedingly prominent character. 



Specie. 69. (Mus. Cuming.) 



CaRDII'M L.EVIGATUM. Curd, lestd uhltiihjn-oriilu, temneii- 



lii, ventricosd, laevigata, radiatim subobsolete striata, 

 area postremd non striata; albidd, autjlavicanie, rufes- 

 cente pallidissime fasciatim nebulosd et radiatd; intus 

 pallide aureo-pmicante. 

 The SMOOTH Cockle. Shell oblong-ovate, rather thin, 

 ventricose, smooth, somewhat obsoletely rayed with 

 strise, extreme posterior area not striated; whitish or 



January 



yellowish, clouded with bands of very faint red or 

 flesh tint, radiately lincated with the same; interior 

 tinged with pale golden yellow. 



Linn.eus, Syst. Nat. (not of Lamarck, nor Pennant). 



Hub. Island of Margarita, West Inches. 



I fully concur with the valuable observations made by 

 M. Deshayes, relative to the Cardium lavigatum of Linnaeus, 

 in his edition of the ' Anim. sans vert.' (vol. vi. p. 402, note). 

 The shell here represented answers in each particular both 

 to his description of that species, and to the figure referred 

 to by him in the ' Encyclopedic Methodique.' There is 

 certainly a great discrepancy in the localities, but the cha- 

 racters mentioned in the following paragraph arc defined 

 in this specimen with particular distinctness ; " Elle a une 

 forme ovale, sa sm-face montre des stries ties efface'es, ob- 

 solete* et longitudinales, qui sc terminent sur le bord en 

 un nombre egal de dentelures. La eoquille est rousse en 

 dehors avec des taches nuageuses plus ou moins grandes, 

 d'un blanc assez pur ; d'autrcs Ibis le blanc domiiie, et la 

 eoquille est parsemee de petites taches rousses." 



Species 70. (Mus. Saul.) 

 Cardium angulatum. Card, testa subquadrato-ovatd, 

 depressiusculd, postice angulatd, radiatim a 

 quinis et triginta ad quadragt nis, angulato-convexis, 

 postremis peculiariter planulatis pastier muricatis, rne- 

 diunis utrinque oblique crenulatis, anticis creberrimi 

 ereiiatis ; albidd, purpurascente zonatd, latere postico 

 intus extusque purpurascente tincto. 

 The angulated Cockle. Shell rather squarely ovate, 

 rather depressed, posterior side angulated, radiately 

 ribbed, ribs from the and thirty to forty, angularly 

 convex, extreme posterior ribs peculiarly flattened, 

 prickly on the posterior side, middle ribs obliquely 

 crenulated on both sides, anterior ribs ver) closelj 

 crenated; white, zoned with pale purple, posterior 

 side stained with pale purple within and without. 

 LAMARCK, Anim. sans vert. ( Deshayes' edit.), vol.vi. p. 336. 



Hub. ? 



This species ma\ be teeognbei] lir-t, b\ the -ipiare an- 

 gulated growth of the posterior side; secondly, by the 

 strong oblique crenulated sculpture of the middle and pos- 

 terior ribs (" Les cotes ilu cote poslerieur," says Lamarck, 

 " sont comine crenelees obliquement par des tubercules") ; 

 and thirdly, b) its purple colouring. The ribs are extremely 

 variable in number; in one specimen before me the) are 

 thirty-nine to fort) in number, in another thirty-five, whilst 

 Lamarck mentions tliim-two onK. 



is l 



