PLATE LXXXIX. 



Mya minor ex flavo viridescens. Pictorum Da Costa. Br. Condi 

 p. 228. tab. 14. fig. 4. 4. 



Pennant and Da Costa hav6 erroneously given this as the Mya. 

 pictorum of Linnzeus, from which it differs in several respects. The 

 Mya pictorum is much more ovate, or egg-shaped, as Linnaeus ex- 

 presses it, and thinner than the present shell, which is of a lengthened, 

 or rather oblong form, and remarkably thick, though semi*transparent. 

 In adopting a new specific name that of oblonga would have been 

 preferred, had it not been pre-engaged by Gmelin to a totally distinct 

 species. 



This species is common in rivers and fresh waters, and sometimes 

 produce little pearls. 



