404 DASYPROCTA. 



Molars semi-rooted, with external and internal enamel folds 

 claws hoof-like; tail obsolete; hind toes three. 



FIG. 78. DASYPROCTA MEXICANA. 

 No. 13855 U. S. Nat. Mus. Col). % nat. size. 



KEY TO THE SPECIES. 

 A. Without nuchal crest. 



a. Long hairs on rump not annulated. 



a.' Above rufous, or hairs with yellow and 

 black rings. 



