132 ONYCHOMYS. 



Geogr. Distr. New Mexico. Range unknown. 



Genl. Char. Nearest to O. melanophrys, but redder; head and 

 ears darker; pterygoid fossa narrower. 



Color. Above dull ferrugineous, rump clear rufous; head and 

 nape blackish gray washed with ferrugineous; ears blackish gray 

 mixed with silver^'^ hairs, most numerous towards tip; chin pale 

 grayish pink; under parts and limbs dull white; tail mixed brown 

 and white above. 



Measurements. Total length, 156; tail vertebrae, 47 ; hind foot, 22. 



257. Onychomys arcticeps Rhoads. 



Onychomys arcticeps Rhoads, Proc. Acad. Nat. Scien. Phil., 1898, 

 p. 194. Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 11, 1901, 

 p. 121. Zool. Ser. 

 Rhoads' Mole Mouse. 



Type locality. Clapham, Union County, New Mexico. 



Geogr. Distr. Northeastern New Mexico. 



258. Onychomys longicaudus Merriam. 



Onychomys longicaudus Merr., N. Am. Faun., No. 2, 1889, p. 2. 



Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 11, 1901, p. 121. 



Zool. Ser. 

 Long-tailed Mole Mouse. 



Type locality. St. George, Washington County, Utah. 

 Geogr. Distr. Utah. Range unknown. 



a. Onychomys longicaudus tulurensis (Merriam). 



Onychomys torridus tularetisis Merr., Proc. Biol. Soc. Wash., xvii, 

 1904, p. 123. 

 Tulare Mole Mouse. 



Type locality. Bakersfield, Kern County, California. 



Geogr. Distr. Tulare Basin from Huron and Alcade south, the 

 Carrizo Plains on the west, and Kern Valley on the east. 



Genl. Char. Similar to O. longicaudus, but paler and without 

 ochraceous stiff usion; size small. 



Color. Pale drab gray tinged with buff. 



Measurements. Average of 5 specimens: Total length, 143; tail 

 vertebrae, 50; hind foot, 21. 



259. Onychomys ramona Rhoads. 



Onychomys ramona Rhoads, Amer. Nat., 1893, P- ^33- Elliot, 

 Syn. N. Am. Mamm., F. C. M. Pub., 11, 1901, p. 121. Zool. 

 Ser. Id. Mamm. Middle Amer. & W. Indies, F. C. M. Pub., 

 IV, Pt. I, 1904, p. 167. Zool. Ser. 



