EXPLANATION OF PLATE XXXVI. 



Palatine boues of Pylhonomovpha, one-half natural size : «, from the outside ; b, from the iuuer side ; and, 

 , c, from below. 



Fig. 1. Liodon dys})do>: 



2. Liodon proriger. 



3. Clidastes tortor. 



4. Clidastes slmops. 



5. Plateearpiis curtirostris. 



6. Plateearpiis coryphccus. 



7. Plateearpiis interims. 



