220 * CHAMA. 



Chama, No. 3. Schroeter Einl. iii. p. 249. 

 Cardita coucamerata. Bruguiere Enc. Meth. p. 138. 

 Walch Naturf. xii. p. 53. t. 1. f. 5 to 7. Ercc. Meth. t. 

 234. f. 6. 



Inhabits the West Indian Seas. Chemnitz. 



This rare and singular shell, for a specimen of which I am in- 

 debted to Mrs. Mawe, is about six lines long, and four 

 broad, and is white both inside and out ; it differs from all 

 other shells by having the margin contracted, and appearing 

 as if doubled over near its middle, so as to form in the 

 inside of each valve an opposite ovate chamber ; the hinge 

 is similar to that of C. catyculata, which the shell also a 

 good deal resembles in its general form. 



pectunculus. 16. Shell oblong, dilated above, and 

 produced at the base, with smooth longitu- 

 dinal ribs. 



Cardita pectunculus. Bruguiere Enc. Method, p. 4 J 2. 

 Lister Conch, t. 347. f. 185. 



Inhabits 



M. Bruguiere describes this shell to be about fourteen or 

 fifteen lines long, and six broad in the middle, of a bright 

 brown towards the summit, and whitish at the base ; it has 

 eighteen or twenty smooth convex longitudinal ribs ; it differs 

 from C. calyculata in being longer in proportion to the 

 breadth, less ventricose, more rounded at the base, and more 

 compressed at the summit, as also in the want of vaulted 

 scales on the ribs. 



coralliophaga. 17. Shell cylindrical, white, dia- 

 phanous, with decussated striae, and the 

 transverse striae scaly, and imbricated. 



Chama coralliophaga. Chemnitz, x. p. 359. 1. 172. f. 1673 



and 1674. Gmelin, p. 3305. 

 Cardita dactylus. Bruguiere Enc. Meth. p. 412. 



Inhabits the East Indian Seas, burrowed in coral. Chem- 

 nitz. 



Shell about an inch and three quarters long, and eight lines 

 broad, nearly cylindrical, and rounded at both extremities, 

 but the posterior side appears in the figure to be slightly con- 

 tracted, and elevated about a quarter of an inch above 

 the hinge. In shape it bears some resemblance to Mytilus 

 lithophagus, but it is said to have the hinge of a Chama. 



