PLATE XXXV. 



PAGE. 



Fig. 1. Ptyonius pectinatus. Natural size - - - 377 



2,3. Ptyonius pectinatus. Natural size 377 



4. Cranium of a Ptyonius. Natural size 373 



5. Ocstocephalus. Maxillary and dentary bones, wilh teeth. Natural size 380 



Ci. Peplorhina anthracina. Cranium from below, displaying mandibles, hyoid bone, operculum, 



etc Natural size 410 



