PLATE 36. 



Dentition both jaws. 



JJeutitiou upper jaw. 



Pig. 54— Notunis flavus Raf. 

 Ohio K., W. Va. lleducert ouesisth. 



Fig. 53 — JSTotnrus fiavus Jlaf. 

 Ohio K.. W. Va. Keducerl one-sixth. 



Fig. 56— Noturns insignis (Hick ) G. & J- 

 Penna. 



