Page. 

 Fig. 1. CUCULLiEA (TniGONAnCA ?) 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. INOCEKAMU.S ERECTUS. Au anterior view of an internal cast of the two valves partly 14-5 

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

 broad as indicated by the outlines below. 



Fig. 4. Inoceramus deformis . 



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

 4 a. Another view of same. 



Fig. 5. Mactr.^ (Trigonella? ) arenaria , 154 



A view of the exterior of the loft valve. 



