122 CARDIUM. 



Cardium, No. 18. Schroeter Einleitung, iii. p. 5y. 

 Lister Conch, t. 328. f. 165. Enc. Meth. t. 299. f. 1. 



Inhabits the coasts of Campeachy. Lister. Virginia. Solander. 

 Florida. Humphreys. 



Shell about four inches and a half long, four inches broad, and 

 more than three and a half high, but is sometimes not more 

 than half so large ; it has thirty-three or thirty-four longitu- 

 dinal ribs, of which about seven at the anterior end are flatten- 

 ed, and somewhat imbricated, and a few at the posterior end 

 are without the transverse scaly striag which cross the others ; 

 one edge of the middle ribs is more rounded than the other, 

 and they all form crenatures on the margin of the shell ; the 

 colour is ferruginous, spotted, and irregularly banded trans- 

 versely with brown. 



flavum. 25. Shell sub-ovate, grooved; the ante- 

 rior margin scabrous, and the posterior, 

 toothed. 

 Cardium flavum. Linnaus Si/st. Nat. p. 1 123. Schroeter 

 Einl. iii. p. 43. t. 7. f. 11. Gmelin, p. 3251. Bruguiere 

 Enc. Method, p. 224. Wood's Conch, p. 224. 

 Inhabits the coasts of Coromandel. Schroeter. 

 Schroeter describes the Linnzean C. flavum to be oblong-oval, 

 with about twenty-seven longitudinal ribs of a sulphur colour, 

 except towards the apex and anterior end, which are white, 

 and the whole shell, by exposure to the sun, becomes white ; 

 of the ribs, five or six at the anterior end are spinous, and 

 twelve or thirteen at the other end tuberculated, with the 

 intermediate ones smooth and rounded ; it is about an inch 

 and three-quarters long, and an inch and a half broad. The 

 figure to which Born has referred for C. flavum is C. leu- 

 costomum, but his description appears to have been taken 

 from C. oblongum. 



oblongum. 26. Shell oblong, ventricose, ribbed 

 longitudinally, except at the ends, which are 

 nearly smooth. % 



Cardium oblongum. Chemnitz, vi. p. J 95. t. 19. f. 190. 



Gmelin, p. 3254. Wood's Conch, p. 223. t. 55. f. 1. and 



t. 54. f. 2. 

 Cardium flavum. Born. Mus. p. 47- t. 3. f. 8. 

 Cardium serratum. Bruguiere Enc. Meth. p. 229. 

 Cardium plebejum. Solander s MSS. 

 Enc. Method, t. 298. f. 5. 



