CARDIUM. 



Species 83. (Mus. Saul.) 



Cardium Deshayesii. Card, testa rotundato-cordatd, 

 gibbosd, subaquilaterali ; radiatim costatd, costis dua- 

 bus et viginli, squamarum brevium cocMeurifurmium, 

 umbones versus foruiea,diii,,i,serie uuied Medio aruiatis, 

 squamis anticis la/ioribus, depressiusculis ; costarum 

 iaterstitik transrersim corrugato-striatis ; pallidefer- 

 rugineo-fuscescente. 



Ueshayes' Cockle. Shell rotundately cordate, gibbous, 

 nearly equilateral; radiately ribbed, ribs two and 

 twenty in number, armed down the middle with a row 

 of short spoon-shaped scales, vaulting over towards 

 the umbones, anterior scales wider and rather de- 

 pressed ; interstices between the ribs transversely 

 marked with wrinkled striae ; pale rusty brown. 



Payrandeau, Cat. Moll, de Corse. 



Hah. Islands of Corsica, Sicily, &c. ; Mediterranean. 



This species is certainly distinct from any of the prickly 

 group which inhabit the Mediterranean ; the scales being 

 of a peculiar spoon-shape, not papuliferous, and, contrary 

 to the usual order of scales, arched over, or back as it were, 

 towards the umbones. 



Species 84. (Mus. Cuming.) 



Cardium isocardia. Card, testa oblique cordatd, gib- 

 bow. ; radiatim costatd, costis tribiis eel quateruis et 

 triginta, squamiferis, squamis fornicatis, eleratiuseuHs, 

 postice subplanatis, squamis anticis pies miiiusre nbtuso- 

 callosis ; stramiued, purpureo-fuseeseeu/e hie ilhe nebu- 



losa ; intus, umbones versus pracipue', vicide purpurea- 

 coceined. 

 The Eaui-HEART Cockle. Shell obliquely heart-shaped, 



gibbous; radiately ribbed, ribs three or four and thirty 

 in number, squamiferous, scales vaulted, rather ele- 

 vated, slightly flattened on the posterior side, anterior 

 scales more or less obtusely thickened ; pale straw 

 colour, stained here and there with purple-brown, in- 

 terior bright purple scarlet, especially towards the 

 umbones. 



Linn-eus, Syst. Nat. (Gmelin's edit.), p. 3249. 



Hoi. Island of Nevis, West Indies (dredged from sandy 

 mud at a depth of from six to ten fathoms). 



Little need be added to assist the identification of this 

 magnificent and well known shell, except a caution against 

 confounding it with the Cardium consors, from which it 

 differs in the particulars noted in the description of that 

 species, (Sp. 86). 



Species 85. (Mus. Cuming.) 

 Cardium orbita. Card, testa ovali, gibbosd, postice sub- 

 angulatd ; radiatim costatd, costis duabus et quadra- 

 giuta, quorum anticis rotundatis, crenatw, mediants 

 utriuque obtuso-squamatis, squamis panis, alternis, ob- 

 Uquis, post ids postice squamatis, squamis majoribus, bre- 

 riljus obtusis; costarum interstitiis, pra-eipue mediums, 

 profundi orbitatis ; a/bidd,fulco aut purpurascente pal- 

 lide variegatd, intus alba, marginibus ciride pnrpureis. 

 The deep-rut Cockle. Shell oval, gibbous, slightly 

 angulated on the posterior side ; radiately ribbed, 

 ribs two and forty in number, of which the anterior 

 are rounded and crenated, the middle are obtusely 

 sealed on each side, the scales being small, alternate, 

 and oblique, and the posterior are scaled on the pos- 

 terior side, the scales being larger, but still short and 

 obscure ; interstices between the ribs, especially those 

 of the middle ribs, deeply excavated or rutted ; whitish, 

 palely variegated with fulvous yellow or purple, inte- 

 rior white, margins richly stained with purple. 

 Broderip and Sowerby, Pro. Zool. Soc., 1833. 

 Hab. Island of Annaa, Pacific Ocean (found in fine coral 

 sand on the reefs) ; Cuming. 

 The sculpture of this species is well characterized by the 

 oblique alternately diverging minute scales which ornament 

 the middle ribs. 



There is another remarkably fine specimen in the collec- 

 tion of Win. Metcalfe, Esq. 



Species 86. (Mus. Cuming.) 



Cardium consors. Card, testa oblique cordatd, gibbosU- 

 simd ; radiatim costatd, costis duabus et triginta, squa- 

 miJeris,squai)iisereeti)-j\)rnieatis,uuiuerosis,crebcrrimif, 

 postice compres.so-planis, squamis autieis obtuso-callosis ; 

 albicaiile, eel strummed, j'u*co-rufescente, postice prct- 

 cipue, liitcld et marmoratd; intus purpurascente. 



The consort Cockle. Shell obliquely heart-shaped, very 

 gibbous ; radiately ribbed, ribs two and thirty in nuru- 



March 1845. 



