- 1C7. - 



sculpture, fewer ard coarser teeth, deeper and sharper internal 

 marginal crenulations. 



Oeourrenoe ,- Upper Oligocene.- S nto Domingo (Gahb, 1873; 

 Guppy, 1874, 1876), ?Gumana, Venezuela (''uppy, 1874). Lo'"er 

 Miocene: Bowden beds, Bov;den, Jamaica (Gu py, 1866, 1874; Dall, 1898) 



