CARDIUM. 



Species 49. (Mus. Cuming.) 



Caedium biradiatum. Card, testa elongato-ovatd, um- 

 bones versus attenuatd, radiatim striata, areis posticd 

 antiedgue lavigatisj alba, maculis roseis undatis spar- 

 sis variegatd, intus rosea vivide biradiatd. 



The double-rayed Cockle. Shell elongately ovate, 

 attenuated towards the umbones, radiately striated, 

 posterior and anterior areas smooth ; white, sparingly 

 variegated with waved pink sputs, interior vividly 

 stained with two pink rays. 



Bruguiere, Diet. Enc. Meth. No. 25. 



Cardium Icevigatum, Chemnitz, Conch. Cab., vol. vi. 

 pi. 18. f. 185 and 186. 



Ilab. Island of Burias, Philippines (foimd among coral 

 sand at the depth of about six fathoms) ; Cuming. 



The characteristic mark of this species, as its name im- 

 plies, is represented by the two pink rays which diverge 

 from within the umbone in each valve. I regret not having 

 exhibited the interior of the shell in the accompanying plate, 

 but the character is most accurately displayed by Chemnitz 

 in the figure above referred to. 



Species 50. (Mus. Cuming.) 

 Cardium tenuicostatum. Card, testa transversa ovatd, 



Sllbub/iq/'ir, Inmirnlii, mi/rimsii, niilmlim mrlililixiimr 



costatd, costis numerosissimis, nunc quadragenis, nunc 

 duabus tribusve et quinquaginta, muticis; albidd, costis 

 maculis parvis run/ml is undatim variegatis, umbonibus 

 roseo-purpurascentibus. 



The thin-bibbed Cockle. Shell transversely ovate, 

 rather oblique, somewhat thin, ventricose, radiately 

 very finely ribbed, ribs very numerous, sometimes forty 

 in number, sometimes about fifty-two or -three in 

 number, smooth; whitish, ribs variegated in a waved 

 manner with small flesh-colour spots, umbones rose- 

 purple. 



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

 372. 



Hob. New Holland. 



The ribs of this species appear to be much more numerous 



in some specimens than in others, varying from forty to 



two or three and fifty in each valve. 



Species 51. (Mus. Cuming.) 



Cardium procerum. Card, testa obhngo-ovatd, tumidd, 

 latere antico rotundato, postico subqwdraio-angulato, 

 serrato; radiatim costatd, costis quinis et mginti, platm- 

 latis, arcuatim striatis, quaternis extremo-anticis obso- 

 letiusculis, ceeteris postice angulatis ; fusco-alMcante, 

 costis maculis perpaucis purpureo-Juscis exilit( r tmctis, 



;„/,■/,;. 



'■"!"■ 



/Justin 



epidermide ficUli lot 

 purpureo-fuscis. 



The tall Cockle. Shell oblong-ovate, swollen, anterior 

 side rounded, posterior somewhat squarely angulated, 

 serrated, radiatelj ribbed, ribs five and twenty in num- 

 ber, flattened, arcuately striated, the four extreme an- 

 terior ribs rather obsolete, the rest posteriorly angu- 

 lated; brownish-white, ribs faintly stained with a very 

 few purple-brown spots, covered with a thin earthy 

 epidermis, posterior margins purple-brown within. 



Sowerby, Pro. Zool. Soc, 1333. 



Testa juvenis, — Cardium laticostatim, Sowerby. 



Hab. Ileal Llejos, Central America (found in course sand 

 at a depth of from four to six fathoms) ; Cu 

 A fine bold species collected by Mr. Cuming at the 



above named locality, of which the Cardium laticostatum 



of Sowerby is unquestionably the young. 



Species 52. (Mus. Cuming.) 



Cardium pseudo-fossi 

 lateraliter subproduc 



Card, testa depresso-ovatd, 

 diatim costatd, costis nume- 

 rosissimis, ad quinquagenis angustis, larrih ■ 

 illinc tumidiusculis ,■ ferrugineo-albd. 

 The fossil-like Cockle. Shell depresslj ovate, a little 

 produced on each side, radiately ribbed, ribs very nu- 

 merous, aboul fifty in number, narrow, smooth, a tittle 

 swollen here and there ; rusty white. 



Reeve, Pro. Zool. Soc., 1844. 



Hob. ? 



This is a remarkable speciesand has so much the ap- 

 pearance of being in a fossi] state, thai I only fell satis- 

 fied to tie' contrarj upon discovering a large portion of 

 fresh homy ligament attached to the hinge of one of 



Mr. Cuming's specimens. 



December IS 14. 



