23 



probably Da Costa was led to believe it was no other 

 than the young of that fhell. 



In this (late of uncertainty we are rather inclined to 

 give credit to fo able a naturalifi:, than to add ours as a 

 new fpccies, with a greater probability of its being the 

 fame. The Parvus feems to be a very local fpecies : is 

 found in great abundance in decayed wood, below the 

 town of Salcomb on the coall of South Devon, the only 

 place we ever met with it : and where the Crifpatus is 

 never found, but the DaEylus and Candidus equally 

 plentiful. The PhoLadcs are all flightly connected at the 

 hinge, and rarely found perfeft except when alive, as the 

 acceffory valves foon feparate. In a live flate thefe fmaller 

 valves or plates are evident and dillinguifhing chara6lei-s. 



'6; 5 

 Pholas Crlfpata. Lin. Syfi. t^. llll. 2S. Crispatus. 



Gmel. Syji. p. 3216. 6. 



Chem. Couch, viii. t. 102. f. 872. to 874. 



Don. Br. Shells, ii. t. 62. 



Pult. Cat. Dorfd. p. 27. 



Tiirt. Lin. iv. p. 173. 

 Pholas Crifpatus. Br. Zool. t. 40. f. 12. 

 Pholas Bifrons. Ba. Cojia. p. 242. t. 16. f. 4'. 4, 



Lifter. Co«c/z.t.436.f.279. Sii.Anat. 19. f. 8. 



LI. Angl. t. 5. f. 38. 

 Pholas Parvus. Bon. Br. Shells, ii. t. 69. young. 



P. with a (Irong, gibbous, opaque fliell, fub-oval, obtufe, 

 and very open at both ends : tranfverfely flriated ; half 



the 



