Pavia c le ve i 
more abruptly elevated than in F. fraguia . The intercostal fur- 
rows in the former appear relatively deeper, and not infrequently 
exothecal dissepiments can he seen In them. These two are the 
only differential characters that I could discover. However, 
perfect specimens might show differences in septal and costal 
dentations and in the character of the p&li. 
The diagnosis of F, c level is admittedly not satisfactory , 
hut the specimen upon which it is based is important, as it shows 
that the Pay 1 a f ragum group existed in the West Indies as far 
hack as Bocene or Lower Oligocene time 
