arclicd ; posterior margin obtusely 

 little convex ; anterior margin sha 

 truncated. 



DUNKER. Proc. Zool. Soc, 18C1. 



Hah. Isl, Zebu, Philippines. 



runcaterl, a 

 I, obliquelj' 



rectis ; terminis oblique truncalu, antico decliri, 

 postico acclivi. 



The rule Solen. Shell straight, short, pjale fulvous, 

 rather rhomboirlal ; dorsal and ventral margins 

 straight ; ends obliquely truncated, anterior 

 sloped downward, posterior sloped upwards. 



Di'NKER. Proc. Zool Soc, 1861, 



H„b. Malacca. 



The dorsal and ventral margins are straight, and the 

 ends obli((Ucly parallel. 



