C A R D I U M. 



Plate IX. 



Species 44. (Mus. Cuming.) 



Cardium rubicundum. Card, testa oblongo-ovatd, vix 

 obliqud, radiatim costatd, costis acute, coiivexis, septeuis 

 ft triginta, quorum triente untied squamoso-crenatd, 

 mediarw, utringue obtuso-squamatd, posticd tuberculoid; 

 rubicundd, umbones versus albieante rubido-fusco macu- 

 latil : marginOus intus vivide rubris. 



The bright red Cockle. Shell oblong-ovate, very 

 slightly oblique, radiately ribbed, ribs sharply convex, 

 seven and thirty in number, the anterior third portion 

 squamosely crenated, the middle portion obtusely 

 scaled on both sides, the posterior portion obliquely 

 tubercled; bright red, whitish towards the urnbones 

 spotted with reddish brown, margins edged with 

 bright pinkish red interiorly. 



Reeve, Pro. Zool. Soc, 1844. 



Hub. Zanzibar, East Coast of Africa. 



An extremely pretty species, remarkable for its vivid 



colouring, and for the elaborate character of its sculpture. 



Species 45. (Mus. Cuming.) 



CaRDIUM ASSIMILE. Can/, tex/ti tib/oiit/o-tirtifd, ob/iijue 

 radiatim costatd, costis quinis at triginta, bad lads, 

 approjdmatis, summitatem versus attenuatis, antieis ere- 

 natis, postremis tubercvlatis, meditinix Lerdms. h item- 

 liter subti/issiiiie iiiipresso-serratis ; pa/tide pvrpvreo- 

 rufescente, umbones versus albieante, maculis sparsis 

 varieejatd. 



The assimilating Cockle. Shell oblong, ovate, ob- 

 liquely radiately ribbed, ribs five and thirty in number, 

 broad and approximated at the base, attenuated to- 

 wards the summit, anterior rib crenated, the extreme 

 posterior tuberculated, the middle smooth and very 

 finely impressly serrated at the sides ; pale purple red, 

 whitish towards the umbones, variegated with scat- 

 tered spots. 



Reeve, Pro. Zool. Soc, 1844. 



Hab. Zanzibar, East Coast of Mica. 



This species approximates very closely to the Cm/in,,/ 



subelongatum, yet then' are differences which cannol be 



overlooked j it has a greater number of ribs, and the ribs 



are of another structure. 



Species 46. (Fig. 46 and 47, Mus. Cuming.) 



Cardium elongatum. Card, testa elongato-ovatd, latert 

 postico subquadrate, serrate; radiatim costatd, costis 

 tribus et quadraginta, plamlatis, creberrimis, antieis 

 subtilissime crenuMis; albidd,Jiamcante 

 diiiiacidatd, costis, posticis prcccipue, versus margines 

 fuscesci'ute tinctis. 



The elongated Cockle. Shell elongately ovate, poste- 

 rior side somewhat square, serrated, radiately ribbed, 

 ribs three and forty in number, flattened, very close- 

 set, the anterior very finely crenulated; whitish, or- 

 namented with a few scattered large yellowish spots, 

 ribs, the posterior especially, stained with brown to- 

 wards the margins. 



Bkuguiere, Diet. Enc. Me'th., No. 26. 

 Sowerby, Conch, ffius. f. 49. 



Hab. Island of Ticao, Philippines (found among coral sand 

 in deep water) ; Cuming. 

 A fine shell in which the ribs are peculiarly flattened, 



and so closely arranged, that the interstitial grooves have 



the appearance of deep narrow cuts. 



For Species 47. see Plate XIII. 



Species 48. (Mus. Cuming.) 

 Cardium Pennantii. Card, testa depresso-cordatd, sub- 

 obliqud, valde inaquilaterali, radiatim exitissime sul- 



catd. am! /inxl'ied 1,1-ri ; snrdide.jliirieanle, t jdtb r,„idt 

 teiini l,l et Jielili indiitd, in/l's tilbd. 



Pennant's Cockle. Shell depressly cordate, rather ob- 

 lique, very inequilateral, radiately very faintly grooved, 

 posterior area smooth; dirty yellowish colour covered 

 with a thin smooth earthy epidermis, interior n bite 



Beck, MSS., II. M. The King of Denmark's Museum 

 Cardium lavigatum Pennant. 



Hab. Exmouth, Devon, (found in sandy mud in deep 

 water); Cuming. 

 The grooves of this -peeies, which lias been confounded 



with the C. lavigatum, are almost obsolete. 



December 1S44. 



