44 Mr. J. C. Melvill and Mr. Abercrombie on 



Leda (Schum.) 

 L. {Nuc2ilmta, Link.) Mauritiana (Sowb.). 



YOLDIA (Moller). 

 Y. Nicobarica (Brug). 

 Specimens of this family are uncommon. 



Fam. Carditid.^. 



Cardita (Brug.). 



C. antiquata (Lam.). 



C. calyadata (Lam.). 



The former is very common at Bombay, while the latter 

 occurs at Ratnagiri. 



Fam. CardiiDvE. 



Cardium (Linn.). 



C. coronatum (Speng.) = Asiatiawi (Brug.). 



C. latum (Bern.). 



Coronatum is extremely common, and from an examina- 

 tion of a vast quantity of specimens, we conclude that 

 Asiatiacm is merely a larger form of the same shell. 



Latum is uncommon, some specimens covered with a 

 bristly epidermis, others nearly smooth. 



Fam. Chamid^. 



CllAMA (Linn.). 



C. macropJiylla (Chem.). 



A single specimen from Bombay is, without much 

 doubt, this species, which is of unusually wide distribution, 

 having its centre of distribution in the West Indies. 



Fam. CYPRINID.E. 



LiBiTiNA. (Schum.) = Cypricardia (Lam.). 

 L. vellicata (Reeve). Common. 



