308 



Records of the Indian Museum. 



[Vol. X, 



Diplodonta (Fclania) ovalis, sp. n. 



(Figs. 19, iqa-b, p. 308). 



Shell small, ovate, very inequilateral, both valves irregularly, 

 concentrically striate ; umbones small, a little prominent ; dorsal 



G, M. W. drf. 



Fig. ig. Diplodonta iFelnnia) ovalis. 

 ,, 20. ,, ,, anfiaiidalei. 



,,21. ,, ,; chilkaeiisis. 



., 22. Coi'biciila (Velorifa) safparaensis. 



margin anteriorly rounded, posteriorly sloping and very slightly 

 arched ; ventral margin rounded ; anterior side abruptly des- 

 cending- almost straight in the median part ; posterior side pro- 

 duced, rounded : cardinal teeth in right valve consisting of a bifid, 

 narrow, V-shaped posterior and a very oblique, somewhat club- 

 shaped, anterior tooth in front of which is also situate a marginal 



