128 GARDIUM. 



fimbriatum. 37. Shell somewhat heart-shaped, 

 with twenty-four longitudinal ribs, and the 

 margin fringed. 



Cardium fimbriatum. Wood's Conch, p. 234. t. 56. f. 4 

 and 5. 



Inhabits 



Mr. Wood, who has described this shell from the extensive 

 cabinet of Mr. Jennings, says, that iu colour and appearance 

 it much resembles C. edule, but terminates at the margin, 

 in a white fringe or furbelow, which is so strongly charac- 

 teristic, that the species can never be mistaken. 



rusticum. 38. Shell transversely ovate, antiquated, 

 with twenty remote ribs, and the interstices 

 wrinkled. 



Cardium rusticum. Limiceus Syst. Hat. p. 1124. Born. 



Mus. p. 49. Chemnitz, vi. p. 201. 1. 19- f- 197. Schroeter 



Einl. iii. p. 48. Gmelin, p. 3252. Bruguiere Enc. 



Meth. p. 222. Wood's Conch, p. 225. t. 55. f. 2 and 3. 

 Cardium fasciatum. Gmelin, p. 3256. 

 Lister Conch, t.329- f. 166. Gualter, t. 71. f. M. Knorr, 



vi. t. 8. f. 3. Regenfuss, i. t. 12. f. 77 and 78. 

 Inhabits the Mediterranean and coasts of Southern Europe. 



Linnccus. 

 The length is about an inch and a half, the breadth about 

 half a line more,, and the height an inch and a quarter ; the 

 outer surface is white, more or less marked with yellowish 

 • or bluish brown bands ; and the inside is white, or pale 

 brown ; there are most commonly twenty, or sometimes 

 twenty-two longitudinal ribs, which are separated by broader 

 and more rugged interstices than in C. edule. 



islandicum. 39. Shell gibbous, with about thirty- 

 six longitudinal triangular ribs. 



Cardium Islandicum. Chemnitz, vi. p. 200. t. 19- f. 195 and 

 196. Gmelin, p. 3252. Bruguiere Enc. Meth. p. 222. 

 Wood's Conch, p. 227. 

 Cardium, No. 14. Schroeter Einl. iii. p. 58. 

 Enc. Meth. t. 300. f. 8. 

 Inhabits the coasts of Iceland and Greenland. Chemnitz. 

 This shell is of about the same size, and at first sight has much 

 the appearance of C. edule, but Chemnitz says it may be at 

 once distinguished by its having at least thirty-six ribs, which 



