CARDIUM. 221 



GREAT COCKLE. 

 PL 53./. 3. Mr. Jennings. 



20. Cardium magnum. C. testa oblonga, costis angulatis, latere serratis. 



Linn. Syst. Nat. ed. 12. p. 1123. Linn. Gmel. p. 3250. 

 Shell oblong, with angular ribs, serrated on the side. 

 Cardium elongatum. C. testa oblonga, subeequilatera, costis 40 longi- 



tudinalibus, utrinque crenato-striatis, posticis striis retrorsum imbri- 



catis. Brug. Encyc. Meth. Hist. Nat. 6. p. 228. 

 List. Conch, pi. 331. f. 168. Seba Mm. 3. pi. 86. f. 2. Born Test. pi. 3. 



f. 6, 7. Chem. Conch. 6. pi. 17. f. 179. Encyclop. Method, pi. 297. 



f. 3. Favanne Conch, pi. 52. f. G. Martin Univ. Conch. 2. pi. 80. 



This is an oblong, oval shell, with forty longitudinal 

 ribs, according to Bruguiere, but our specimens have 

 only thirty-four. It grows to a very large size, some 

 having been found six inches long and of other dimen- 

 sions in proportion ; the anterior ribs are serrated, the 

 middle ones flattish at top, and the posterior ribs im- 

 bricated ; the ground colour of the shell is white, with 

 spots, or stains, of yellow, orange, brown, or purple. 

 The inside is white, with a yellow mark reaching from 

 the apex towards the middle of the shell; some are 

 quite white within. 



Inhabits the American ocean, and is common on the 

 coasts of Jamaica, and other West India islands. 



