CARDIUM. 



Species 94. (Mus. Cuming.) 



Cardium Eichwaldii. Card, testa ovatd, crassiusculd, 

 valdi gibbosd postice subangulatd, fortiter costatd, 

 costis duabus tribute et viginti, plus minusve indis- 

 tinct!: tuberculatis ; transversim rugoso-striatd ; albidd, 

 intus alba, postice Iwiifo-fuscesceute exiliter tinctd. 



Eichwald's Cockle. Shell nearly ovate, rather thick, 

 very gibbous, slightly angulated on the posterior side, 

 strongly ribbed, ribs about two or three and twenty 

 in number, more or less indistinctly tuberculated ; 

 transversely roughly striated; whitish, interior white, 

 faintly stained with livid brown on the posterior side. 

 Cardium rusticum, Eichwald (uot of Linnaeus, nor 

 Lamarck) Fauna Caspio-Caueasia. pi. 38. f. 24-27. 



Hah. Caspian Sea. 



This species, which is intermediate between the Cardia 



edule and Lamarckii, should, I think, be distinguished on 



account of its tuberculated structure, and further peculi- 



aritv of form. 



Species 95. (Mus. Cuming.) 



Cardium nivale. Card, testa trigono-cordatd, margints 

 rerxiis subcomprcssd, past ice anyiilald, plano-depressd ; 

 radiatim planicostatd, costis quints et triginta, area 

 posticce hevibus, irrcgidaribus, nunc angiisfis, nunc lati- 

 uscii/is, a nt ids siibli'issiuie itud uloso-crenatis ; lucido- 

 a/bd, macidis niveis opacis, in areain posticaiu prcecipue, 

 profuse omatd. 



The snow-spotted Cockle. Shell triangularly cordate, 

 a little compressed towards the margins, angulated 

 and flatly depressed on the posterior side ; radiately 

 flatly ribbed, ribs five and thirty in number, those of 

 the posterior area smooth, irregular, sometimes nar- 

 row, sometimes rather broad, the anterior very finely 

 nodulously crenated ; transparent white, profusely or- 

 namented, on the posterior area especially, with opakc 

 snowy spots. 



Reeve, Pro. Zool. Soc, 1S45. 



Hob. Island of Corrigidor, Philippines (dredged from coral 

 saud at the depth of eight fathoms); Cuming. 

 An interesting new species, intermediate in form between 



the Cardia fragum and hemicardium. 



(Mus. Cuming.) 

 Cardium Caspium. Card, testa transverse ovatd, postice 

 hiante ; radiatim costatd, costis Iceviyatis, plano-de- 

 pressis, quasi detritis ; albidd, costis J/aro- aid rubido- 

 fuscescentibus, ml ns rubieundd. 

 The Caspian Cockle. Shell transversely ovate, poste- 

 riorly gaping ; radiately ribbed, ribs smooth, flatly 

 depressed, as if worn down ; whitish, ribs yellowish 

 or reddish brown, interior reddish. 

 Corbula Ca-yiin. Monodm-na Cnspia. — Eichwald, Fauna 

 Caspio-Caueasia, p. 27 4. pi. 39. f. 4 a, b, c. 

 Ilab. North coast of the Caspian Sea ; Eichwald. 



The ribs of this species being somewhat broad and pecu- 

 liarly flattened, have the appearance of coloured rays di- 

 verging from the umbones. 



Species 97. (Mus. Cuming.) 



Cardium australe. Card, testa oblique ovatd, : 

 versus attenuatd ; teiiuissime costatd, costis ; 

 simis ; albidd, roseo-purpureo pallirle marulatd, ti„d,n- 

 nibus purpureis, area postremd purpurea fasciatd, intus 

 luted, radio unico purpuraseente infi 

 que valves dkergeute. 



The southern Cockle. Shell obliquely ovate, attenu- 

 ated towards the umbones ; very finely ribbed, ribs 

 very numerous; whitish, faintly spotted with pinkish 

 purple, umbones purple, extreme posterior area banded 

 with purple, interior yellow, with a single purple ray 

 diverging beneath the umbo in each valve. 



Sowerby, Pro. Zool. Soc, 1S40. 



Hat). Australia. 



This shell, which has a peculiarly oblique form, is very 



nearly allied to the Cardium tenuicostatum. 



Species 9S. (Mus. Cuming.) 

 Cardium pulchrum. Card, testa ovatd, umbones oersu 

 subattenuatd ; radiatim tenuistime sulcata ; incarnato- 

 fuscescenle, propc margincs alba maculis roseis quadratic 

 pulchre omatd, umbonibus purpureis, in/us roseo con- 

 centrice oariegatd. 

 The pretty Cockle. Shell ovate, somewhat attenuated 

 towards the umbones; radiately very finely groovi 'I 



