152 BULLETIN OF THE 
Hyznodon leptocephalus, Scott.* This species is peculiar for the long, 
narrow cranium, and for the position of the posterior nares, which are roofed in 
by the entire length of the palatines and by the pterygoid plates of the alis- 
phenoid. In size it slightly exceeds the H. crucians of Leidy. This species 
was established upon two fine skulls in the Cambridge collection. 
Ficure 1. — Skull of Hycenodon leptocephalus, from below upon the under surface. 
CARNIVORA. 
CANIDZ. 
Cynodictis (Amphicyon) gracilis, Leidy. With the possible exception 
of some specimens from the Uinta eocene, the genus Amphicyon has not been 
found in America. Galecynus, as has been lately shown,} cannot be separated 
* Loc. cit. 
+ Huxley, P. Z. S., 1880, p. 280; Lydekker, Brit. Mus. Cat. Foss. Mam., Vol. I. 
