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PLATE XX. 



From Bedford shales at Central College. 



L-INGUEA MELIE, H 507 



DlSCINA, SP. 



MARTINIA UMBONATA, H. 



Macrodon hamiltoni^e, H. 

 goniatites, sp. 

 Strophomena rhomboidaus. 



From shales above Berea Grit. 

 Atrypa RETICULARIS. 



Pal^Eoneieo bedfordensis. 

 Microdon BEEEISTRIATUS, Conr. 

 Orthis vanuxemi, H. 



BEELEROPHON HELENA. 



Pterinopecten, SP. 



NuCUEANA DIVERSA, H. 



Peeurotomaria suecomarginata. . 

 loxonema deephicoea. 

 Orthoceras, sp. 



