404 DASYPROCTA. 
Molars semi-rooted, with external and internal enamel folds; 
claws hoof-like; tail obsolete; hind toes three. 
Fic. 78. DASYPROCTA MEXICANA. 
No. 13855 U.S. Nat. Mus. Coll. 2 nat. size. 
RE Yo TOSS EES SPE CUES: 
A. Without nuchal crest. 
a. Long hairs on rump not annulated. 
a.’ Above rufous, or hairs with yellow and 
black rings. 
