MYA. 103 



beak is prominent, and placed very near the end of the 

 shell ; when the valves are closed, the gape or opening 

 appears very large, and shows the hinge with its rudi- 

 ments of teeth. 



This species is found, according to Mr. Montagu, on 

 the Dorset coast, at Torbay, and at Plymouth, bur- 

 rowed in detached pieces of lime-stone ; and its cham- 

 ber is often lined with shelly matter, that sometimes 

 protrudes, like a tube, a quarter of an inch beyond the 

 stone. Mr, Montagu has specimens of this My a, not 

 only in lime- stone, but also in fluor, and in granite ! 



WHITE NORWAY GAPER. 



24. Mya nitida. M. testa ovali, alba, Icevi; cardinis utriusque dente 

 obtuso. Linn. Gmel. p. 3222. 



Shell oval, white and smooth ; hinge with an obtuse tooth in each valve. 

 Muller, Zool. Dan. Prodr. 2963. 



Described only by Muller. Inhabits Norway. 

 ** With teeth inserted into the opposite valve. 



DUTCH GAPER. 

 PI. 19. /. 1, 2. Mr. Sowerby. 



25. Mya Batava. M. testa subovali, utraque extremitate rotundata. 

 Linn. Trans. 8. p. 37. 



Shell of a suboval shape, rounded at both ends. 



Schr'dt. Flussconch, t. 3. f. 2. 4 & 5. Chemn. Conch. 6. t. 1. f. 6. En- 

 cyclop. Method, t. 248. f. 2. Donor. Brit. Shells, t. 174. M. Pic- 

 tornm. Mont. Test. Brit. p. 36. 



This shell has been confounded with the true 31. 

 Pictorum, but may be distinguished by its shape, which 

 is always less pointed at the apex, and generally less 

 prominent at the beak, than in the M. Pictorum. It is 



