PLATE XX. 



From Bedford shales at Central College. 



Fig. 1. LlNGULA MELIE, H 507 



Fig. 2. DlSClNA, SP. 



Fig. 3. Mart inia umbonata, H. 



Fig. 4. Macrodon hamii/Toni^, H. 



Fig. 5. GONIATITES, SP. 



Fig. 6. STROPHOMENA RHOMBOIDALIS. 

 From shales above Berea Grit. 



Fig. 7. Atrypa reticularis. 



/Fig. 8. Pal^oneilo bedfordensis. 



Fig. 9. MlCRODON BELLISTRIATUS, Conr. 



Fig. 10. Orthis vanuxemi, H. 



Fig, 11. BBHEROPHON HELENA. 



Fig. 12. PTERINOPECTEN, SP. 



Fig. 13. NUCULANA DIVERSA, H. 



Fig. 14. Pleurotomaria SULCOMARGINATA. 



Fig. 15. LOXONEMA DELPHICOLA. 



Fig. 16. Orthoceras, Sp. 



