"21t> CHAMA. 



Chama antiquata Linneeus Syst. Nat. p. 1138* Born 

 Mus. p. 82. Chemnitz, vii. p. 108. t. 48. f. 488 and 

 489- Schroeter Einl. iii. p. 234. Gmelin, p. 3300. 

 Brooks's Introd. p. 70. t. 3 f. 33. 

 Chama decora. Solander's MSS. 

 Cardita sulcata. Bruguiere Enc. Meth. p. 405. 

 Bonanni Rec. 2. f. 98, and Kirch, f. 96. Lister Conch. 

 t. 346. f. 183. Petiver Gaz. t. 59- f- 9- Gualter, t. 

 v 71. f. I and L. Knorr, ii. t. 20. f. 3. JEwc. itM. t. 

 233. f. 2. 

 Inhabits the Mediterranean. Bonanni, fyc. Straights of Gi- 

 braltar. Petiver. 

 Shell about an inch long, and nearly equally broad, and has 

 from sixteen to eighteen strong convex longitudinal ribs ; the 

 colour is pale or yellowish brown, and the ribs are variegated 

 with white and ferruginous spots ; posterior depressions 

 cordiform. 



ajar. 7. Shell somewhat heart-shaped, slightly pro- 

 duced at the anterior end, with longitudinal 

 ilattish ribs, and transversely striated and 

 tuberculated ; posterior depression sub-orbi- 

 cular. 



Cardita Ajar. Bruguiere Enc. Meth. p. 406. 



Chama antiquata. Solander's MSS. 



Chama antiquata Var. Chemnitz, vii. p. 1 10. t. 48. f. 490 



and 491. 

 L'Ajar." Adanson Senegal, p. 222. t. 16. f. 2. 

 Enc. Meth. t. 233. f. 3. 



Inhabits the Mouths of the Niger. Adanson. Coasts of 

 Tranquebar. Bruguiere. 



M. Bruguiere says, that this shell differs from C. antiquata t 

 by being more produced at the anterior end, by having from 

 twenty-one to twenty-six strong flattened ribs, and the pos- 

 terior depression more orbicular, and less cordiform. Bru- 

 guiere considers Lister's t. 497- f. 52. which is Venus imbri- 

 cata of Gmelin, to be a fossil variety of this species, and 

 says, it is common at Courtagnon. I suspect from his short 

 MS. description, in Sir Jos. Banks's library, that Dr. 

 Solander considered this shell to be the Linnaean C. anti- 

 quata, and that the preceding species is his C. decora. 



trapezia. 8. Shell trapeziform, gibbous, with lou- 



