I>LA.TE XIII. 



Page. 

 Fig 1. InoCERAMUS EHECTUS , 145 



1. A side view of au internal cast of both valves, somewhat distorted. 



1 a. Another small cast of a left valve. 



Fig. 2. Inoceramus problematicus ? 143 



2 a. Cast of a light valve. 



2 6. A part of an internal cast of a form with a more pointed beak (partly dae to distor- 

 tion), possibly belonging to another species. 



Fig. 3. Inoceramus Simpsoni. An internal cast of a right valve, with some remaining portion^ 

 of the shell. Portions of the basal and posterior dorsal margins being broken 

 away 143 



Fig, 4. Inoceramus (nndt. sp.), side view 144 



4 a. A profile outline of same. 



