PLATE CXXXIV. 



CHAMA COR. 



HEART-SHAPED CHAMA, 

 GENERIC CHARACTER. 



Animal a Tethys. Shell bivalve, and rather coarse. Hinge with 

 a callous gibbosity, obliquely inserted into an oblique hollow : ante- 

 rior slope closed. 



SPECIFIC CHARACTER 



AND 



SYNONYMS. 



Shell subrotund, and smooth : beaks recurved : anterior slope 



gaping. 



Chama Cor : testa subrotunda lsevi : natibus recurvatis rimahiante. 

 Mas. Lad. Ulr. 516. n. 88. — Gmel. 8yst. Nat. 

 T. 1. p. 6. p. 3299. sp. I. 



As an inhabitant of the Mediterranean, the Adriatic, and Caspian 

 sea, this curious shell has been long since known ; but as a Britis I 

 species has not been before described. It was discovered several ye?irs 

 ago in the seas about the islands in the North ' of Scotland, by 3 

 Agneu, Gardener to the late Duchess of Portland ; and since that 



G 2 



