109 



&ZVLU8 VII. 



CARDIUMrf 



SHELL BIVALVE, NEARLY EQUILATERAL, AND THE 

 VALVES EQUAL ; HINGE WITH TWO PRIMARY 

 TEETH ALTERNATING WITH THOSE OPPOSITE, 

 AND THE LATERAL TEETH REMOTE AND IN- 

 SERTED. 



costatum. 1. Shell gibbous, equivalve, with high, 

 keeled, < 

 nal ribs. 



keeled, concave, membranaceous, longitudi- 



Cardium costatum. Linnceus Syst. Nat. p. 1121. Born. 



Mus. p. 40. Chemnitz, vi. p. 156. t. 15. f. 151 and 152. 



Schroeter Einl. iii. p. 27. Barbut's Verm. p. 28. t. 3. 



f. 7. Gmelin, p. 3244. Bruguiere Enc. Meth. p. 224. 



Lamarck Syst. des Anim. p. 119- Wood's Conch, p. 



231. t. 56. f. 1, 

 Lister Conch, t. 327. f. 164. Rumphius, t. 48. f. 6. Gual- 



ter,t.72.~D. Argenville, t. 23. f. A. Adanson, t. 18. 



f. 2. .Krcorr, i. t. 28. f. 2. Favanne, t. 52. f. B. £«c. 



Method, t. 293. f. 1 . 

 Inhabits the African Seas. Linnaus. Mouth of the river 

 Congo. Lister. Senegal. Adanson. Guinea. Humphreys. 

 Coasts of Naples. Ulysses. 



f The following of Gmelin's species appear to me to be undeserving of no- 

 tice : C. albidum, p. 3256. C. cancellatum, p. 3256. C.flexuosum, p. 3255. C\ 

 gaditanum, p. 3255. C. rubiginosum, p. 3256. C. trilaterum, p. 3253. C. triste, 

 p. 3253. and C. virescens, p. 3256. C. lithocardium, p, 3246. has been found in a 

 fossil state only. 



