220 OTOTYLOMYS. 
46. Ototylomys. 
L- =; M.2 S = 16. 
Ototylomys Merr., Proc. Wash. Acad. Scien., 111, 1901, Dp. .BGms 
Type Ototylomys phyllotis Merriam. 
Rat-like; ears large, thin, and naked; tail long and naked. Skull: 
superciliary ridge present and reaching to occiput; bulle with axes 
parallel to that of skull; width and depth equal, and no anterior 
prolongation; maxillary root of zygoma notched above: anterior open- 
ing of antorbital vacuity vertical; incisive foramina equal in width at 
Fig. 37. OTOTYLOMYS PHYLLOTIS. 
No. 1to8095 U.S. Nat. Mus. Coll. Enlarged % 
UPPER TOOTH ROW LOWER TOOTH ROW 
Enlarged 7 times. Enlarged 7 times 
