The Reptiles of the American Eocene. [December, 



C. sqnankensis Marsh; and the two Eastern Mi< 

 C. sericodon Cope (type of Thccachampsa) and C. sic 



\ * 



The forms of the crowns vary considerably. In neai 

 Crocodilia the posterior teeth have short and obtuse crown; 

 in C. heterodon Cope, this character is carried very far. 



