MYA. 97 



Chemnitz has figured this shell from a specimen in 

 Spengler's museum. 



Its country is unknown. 



NICOBAR GAPER. 



11. Mya Nicobarica. M. testa tequivalvi, ovato-oblonga, decussatim 

 striata ; cardinis dente solitario, lato, perpendicular i, cochleariformi. 

 Linn. Gmel. p. 3221. 



Shell of equal valves, snowy, oblong oval, with decussated striee ; hinge 

 with a single, broad, perpendicular, and spoon-shaped tooth. 



Mya Candida Indies orientalis, testa oblonga, antice angulata, postice 

 rotvndata. Chemn. Conch. 6. pi. 3. f. 17, 18. 



The valves of this shell are on one side convex, 

 broad, and rounded at the margin ; on the other more 

 angular, narrow, flat, and gaping. The tooth is large, 

 and the shell is about an inch and a quarter long, and 

 an inch and three quarters broad. 



It inhabits the Nicobar Islands. 



BEAKED GAPER. 



12. Mya rostrata. M. testa fragilissima, alba, diaphana, memh'anacea, 

 antice rostro cylindrico producto, hiante ; postice tumido et rotundato ; 

 cardinis dente minuto excavato. 



Shell very fragile, white, diaphanous, and membranous, the fore part 

 produced into a cylindrical beak, the hind part round and tumid ; 

 hinge with a small excavated tooth. 



Chemn. Conch. 11. p. 189. vignette C. D. 



This shell is figured by Chemnitz, of a pear shape, 

 with one end remarkably lengthened, and gaping ; the 

 valves are very thin and finely striated concentrically ; 

 they close in all parts, except the end of the beak, and 

 are delicately white within. 



VOL. I. 



