200 



NEW YORK STATE MUSEUM 



marking a marginal slit or notch; surface with fine lines of 

 growth ; and F h a n e r o t i n u s 1 a x u s [fig. 138], a very loose 

 coiled shell with widely separated wmorls gradually enlarging 

 toward the subcircular aperture and coiling nearly in the same 

 plane. 



Fjg". 134 Amphigenia el on gat a 



The pteropods are represented byTentaculites scalari- 

 f or mis [fig. 139], a strongly and regularly annulated, elon- 

 gated cone, with the subequal interspaces marked by fine, even,, 

 transverse striae. 



Among the cephalopoda occur : Cyrtoceras eugenium 

 [fig. 113], already described under the Schoharie grit; Gyro- 



