CABDIUM.— Plate XX. 



Species 109. (Mus. Cuming.) 

 Cardium stellatum. Card, testa oblique qmdratd, gib- 

 bosd, valde incequilaterali, latere antico brevissimo, 

 postico angulato ; radiatim planicostatd, costis tribus 

 vel quatemis et vigiidi, utri/iqi/e subtUiter crenulatis, 

 costis anticis noduliferis ; ferrugiueo-fuscd, maculis 

 perpaucis albis stellald. 

 The starry Cockle. Shell obliquely quadrate, gibbous, 

 very inequilateral, anterior side very short, posterior 

 angulated ; radiately flatly ribbed, ribs three or four 

 and twenty in number, finely crenulated on each side, 

 anterior ribs nodidiferous ; rusty brown, starred with 

 a few white spots. 

 Reeve, Pro. Zool. Soc., 1845. 



Hab. ? 



A square gibbous shell of which the anterior side is re- 

 markably short and contracted. 



Species 110. (Mus. Cuming.) 

 Cakdium FORNICATUM. Card, testa subquadratd, antice 

 rotundatd, postice concavo-angulatd ; radiatim costatd, 

 costis qui u is et trigiuta, creberrime iiuhrirido-squainatis, 

 ad latera minutissime crenulatis, costarum interstitiis 

 subprofunde excavatis, transversim suMiliter striatis ; 

 albidd, purpurascente nodulosd, intus vivide aurantid, 

 margines versus roseo-purpured. 

 The vaulted Cockle. Shell somewhat square, rounded 

 anteriorly, concavely angulated posteriorly ; radi- 

 ately ribbed, ribs five and thirty in number, very 

 closely imbricately scaled, minutely crenulated at the 

 sides, interstices between the ribs rather deeply ex- 

 cavated, transversely finely striated ; whitish, clouded 

 with pale purple, interior bright orange, pinkish pur- 

 ple towards the margins. 

 Sowerby, Pro. Zool. Soc, 1840 ; Conch. Mus. f. 50. 



Hob. ? 



The chief peculiarity of this remarkable shell, which is 

 at present unique in the collection of H. Cuming, Esq., 

 consists in the ribs having a double pattern of sculpture, 

 being surmounted with a close-set row of small vaulted 

 scales, whilst the sides are minutely crenulated. 



Species 111. (Mus. Cuming.) 

 Cardium papillosum. Card, testa suborbiculari, con- 

 vexd, pauluhim, obliqud, radiatim costatd, costis qua- 

 temis et vigiidi, papillu brevibus undique echinatis, cos- 

 tarum interstitiis transversim impresso-punctatis ; al- 

 bidd, ferrugmeo-fusco tinctd et sparsim maculatd. 



The papillose Cockle. Shell somewhat orbicular, con- 

 vex, a little oblique ; radiately ribbed, ribs four and 

 twenty in number, echinated throughout with short 

 papillae, interstices between the ribs transversely im- 

 pressly punctured; whitish, stained and sparingly 

 spotted with rusty brown, interior white, reddish 

 brown on the posterior side. 



Poli, Testacea utriusque Siciliae, pi. 16. f. 2^1. 

 Cardium Polii, Payrandeau. 



Hab. Mediterranean. 



A well-known species, which may be easily recognised 



by the papuliferous sculpture of the ribs, and the peculiar 



transverse groove-like punctures in the interstices. 



Species 112. (Mus. Cuming.) 



Cardium crenulatum. Card, testa transverse ovatd, 

 subaquilaterali, radiatim costatd, costis vicenis con- 

 vexo-planatis, rugis transversa creniformibus sculpt is ; 

 albidd, ferrugineo-fusco postice tinctd et maculatd 



The crenulated Cockle. Shell transversely ovate, 

 nearly equilateral ; radiately ribbed, ribs about twenty 

 in number, convexly flattened, sculptured with trans- 

 verse creniform wrinkles ; whitish, stained and spotted 

 on the posterior side with rusty brown. 



Lamarck, Anirn. sans vert. (Deshayes' edit.), vol. vi. p. 407. 

 Cardium edule, var., Deshayes. 



Hab. Plymouth, Britain. 



This is one of several species, which, in my opinion, have 

 been erroneously confounded together as varieties of the 

 Cardium edule. 



Species 113. (Mus. Cuming.) 



Cardium Belticum. Card, testa termiculd, transverse 

 ovatd, subobliqud, postice coinpresso-productd ; radiatim 

 costatd, costis ad triceuis, planatis, angustis, Imvibus, 

 sicbdistantibus ; albicante, costis medianis posticisque 

 nigro-fuscis. 



The Baltic Cockle. Shell rather thin, transversely 

 ovate, somewhat oblique, posteriorly compressly pro- 

 duced ; radiately ribbed, ribs about thirty in number, 

 flattened, narrow, smooth, rather distant ; whitish, 

 middle and posterior ribs blackish brown. 



Beck, MSS. Mus. King of Denmark. 



Hab. Baltic Sea. 



May be distinguished by its narrow, flattened, smooth, 



distant, dark brown ribs, which are very conspicuous upon 



the light ground of the shell. 



