Pago. 



Fig.^y. CUCULLiEA (Trigonarca?) obliqua , 148 



1. Internal cast of a left valve. 

 1 a. Another larger one of same. 

 1 6. A cast of right valve of same. 



Fig. 2. CoRBULA (cast in sandstone) 150 



Fig. 3. Inoceramus erectus. An anterior view of an internal cast of the two valves partly 145 

 opened. Their lower margins are distorted, and probably were originally as 

 broad as indicated by the outlines below. 



Fig. 4. Inoceramus deformis 146 



j^j " ' 4. Cast of a right valve, with a part of the anterior margin and beak broken away. 

 4 a. Another view of sariie. 



Fig. 5. Mactka (Trigonella?) arenaria 154 



A view of the exterior of the left valve. 



