CAEDIUM.— Plate II. 



Species 11. (Mus. Chiming.) 



Cardium costatum. Card, testa ovato-globosd, tenui, 

 sent \ricosa ', mbeequilaterali, latere postico Mante; radi- 

 atim costatd, costis novenis, angustis, compressis, acute 

 elevatis, earns, subdistantibus ; iiimi, interstitiis inter 



riis/a.i, pas/ iris prieripiii-, iiniijiliidiiitiiiti'r fiisrn-l'n.sriiiti.s. 



The ribbed Cockle. Shell ovately globose, thin, ven- 

 tricose, nearly equilateral, posterior side gaping; ra- 

 diately ribbed, ribs nine in number, narrow, com- 

 pressed, sharply elevated, hollow, rather distant; 

 snowy white, interstices between the ribs, the poste- 

 rior especially, longitudinally brown-banded. 



Linx.eus, Syst. Nat. (Gmelin edit.), p. 3344. 



Huh. East coast of Africa. 



This remarkable and well-known shell stands almost 

 alone in the genus, the Cardium Jtimtx, Plate V., being the 

 only other species which presents any real affinity with it. 



Species 12. (Mus. Cuming.) 

 Cardium lyratum. Card, testa rotundatd, nonnunquam 



di'/irr-ssiiisi-lilii, jin\lin- Im.ij'll iidimdilrr vnslal 'a ', n.ili.s 



orebris ,• antict transversim oblique plicato-liratd, liris 

 angustis, distantioribus, subirregulariter levite. undula- 

 tis, interstitiis longitudinaliter minutissime stria/is ; 

 looted, epidermide coccineo^rubrd indutd, umbonibus 

 purpurascente paUidissime tincUs; intas rufescente- 



The lyrated Cockle. Shell rounded, sometimes a little 

 depressed, posteriorlylongitudiually ribbed, ribs close; 

 anterior transversely obliquely plicately ridged, ridges 

 narrow, more distant, rather irregularly slightly un- 

 dulated, the interstices being longitudinally very mi- 

 nutely striated ; cream colour, covered with a deep 

 crimson-red epidermis, umbones very faintly tinged 

 with purple; interior reddish golden colour. 

 Sowerby, Pro. Zool. Soc, 1840. 



Hah. Island of Negros, Philippines (found in sandy mud 

 at the depth of seventeen fathoms); Cuming. 

 The Cardium lyratum may be distinguished from the 

 Cardium pectinatum (C.JEolicum, Porn), to which it is so 

 iiearh allied, by its having no smooth area on the pos- 

 terior side, and by its pure cream-coloured exterior enve- 

 loped in a bright crimson-red epidermis. 



Species 13. (Mus. Cuming.) 



Cardium unedo. Card, testa subcordatd, latere postico 

 angulaioi radiatim costatd, costis ad tricenis confertis, 

 interstitiis posticis ad margines aubincisis ,- flavicante, 

 costis scutellis sen liris transversis elatis Divide rosact o- 

 ruhris ornatis. 



The strawberry Cockle. Shell somewhat heart-shaped, 

 posterior side angulated ; radiatcly ribbed, ribs about 

 thirty in number, close-set, interstices on the posterior 

 side slightly open at the margins ; yellowish, ribs orna- 

 mented with bright pinkish-red, elevated cross ridges 

 or small shields. 



Linn.eus, Syst. Nat. (Gmelin edit.), p. 3250. 



Hah. Ceylon, Philippine Islands, &c, (found in sandy mud 

 at low water). 



The bright red ornamental sculpture of the ribs varies 

 in its character and size from minute cross ridges to small 

 oblong square elevated shields, as in the specimen selected 

 for illustration. 



Species 14. (Mus. Cuming.) 



Cardium pectinatum. Card, testa gibboso-globosd, ra- 

 diatim striata, striis numerosis, confertis, posticis ele- 

 vatis, anticis subobsoletis, plicis angustis subrugosis 

 oblique decussatis, aredpostremd leevigatd; albicante, 

 maculis pallide rosaceis undatis undique pictd. 



The pectinated Cockle. Shell gibbously globose, ra- 

 diatcly striated, stria 1 numerous, close-set, the poste- 

 rior elevated, the anterior .somewhat obsolete and 

 obliquely crossed with narrow slightly wrinkled plaits, 

 the extreme posterior area of the shell smooth ; white, 

 everywhere painted with waved pink spots. 



Linnaeus (not of Lamarck, nor Philippi), Mus. Uric. 

 Deshayes, note in new edition of Lamarck, vol. \i. 

 p. 404. 

 Cardium ffloUcum, Porn, Lamarck, Sowerby. 



Hob. ? 



I restore the Linnaean name of this very beautiful and 

 rare shell upon the testimony of M. Deshayes, much re- 

 gretting that the appellation erroneously followed 1>\ La- 

 marck should have become so popular amongst concholo- 

 gieal writers and amateurs. 



