60 



Notes on Species of Corbiculadce. 



the beaks are less full and less prominent ; the hinge-margin is 

 more delicate and straighter, and the color of the epidermis is 



lighter and not so uniform. 



Fig. 4. 



Corbicula fluminea. 



I dedicate this species to the memory of the author of the 

 Yerminm terrestrium, etc., the first who described species of 

 this genus. 



I am indebted to Mr. Wheatley for my specimens of Cor- 

 bicula Millleriana. 



4. Corbicula Clieimiitziaiia, nov. spec. 



C. testa triangulari, rcquilaterali, compressiuscula ; latere antico rotun- 

 dato, postico attenuato ; umbonibus tumi- 

 dulis, incurvis, approximatis, integris; car- 

 dine incrassato ; valvis solidiusculis, intus 

 pallide-violaceis, ad margines saturatioribus ; 

 lunula ovato-lanceolata ; striis numerosis, ad 

 marginem inferiorem imbricatis ; epider- 

 mide luteo-virescente, subuitente vestita. 



Long. 35 ; lat. 31 ; diam. 19 mill. 



Hob. — China ? Collect. Prime. 



Corbicula Chemnitziana. 



and not much inflated. 



The shell is triangular, equilateral, 

 The anterior side is rounded and the 





