286 THOMOMYS. 



708. Thomomys baileyi Merriam. 



Thomomys baileyi Merr., Proc. Biol. Soc. Wash., xiv, 1901, p. 109. 

 Sierra Blanca Pocket Gopher. 



Type locality. Sierra Blanca, El Paso County, Texas. 



Genl. Char. Size small; upper incisors projecting forwards. 

 Skull resembles that of T. toltecus but differs in the projecting incisors, 

 and longer nasals, wider interorbital region, and more open post- 

 coronoid notch of mandible. 



Color. Above buffy fulvous lined with black; beneath buff; 

 mouth dusky; pou'ches and feet white. 



Measurements. Total length, 212 ; tail vertebrae, 168 ; hind foot, 30. 



709. Thomomys nelson! Merriam. 



Thomomys nelsoni Merr., Proc. Biol. Soc. Wash., xiv, 1901, p. 109. 

 Elliot, Mamm. Middle Amer. & W. Indies, F. C. M. Pub., iv, 

 Pt. I, 1904, p. 339. Zool. Ser. 

 Nelson's Pocket Gopher. 



Type locality. Parral, State of Chihuahua, Mexico. 



Geogr. Distr. State of Chihuahua, Mexico. Range unknown. 



710. Thomomys latirostris Merriam. 



Thomomys latirostris Merr., Proc. Biol. Soc. Wash., xiv, 1901, p. 107. 

 Broad-nosed Pocket Gopher. 



Type locality. Little Colorado River, Painted Desert, Coconino 

 County, Arizona. 



Geogr. Distr. Arizona. Range unknown. 



Genl. Char. Size medium; rostrum broad; nasals shorter than 

 the premaxillae; interparietal pentagonal. 



Color. Above pale ochraceous buff; under parts, feet, and tail 

 whitish. 



Measurements. Total length, 232 ; tail vertebrae, 79; hind foot, 33. 



711. Thomomys perpallidus (Merriam). 



Thomomys talpoides perpallidus Merr., Science, viii, 1886, p. 588. 

 Thomomys perpallidus Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 

 II, 1901, p. 229. Zool. Ser. Id. Mamm. Middle Amer. & W- 

 Indies, F. C. M. Pub., iv, Pt. i, 1904, p. 340. Zool. Ser. 

 Pale Pocket Gopher. 



Type locality. Colorado Desert. San Diego County, California. 

 Geogr. Distr. Lower California, Mexico, Colorado Desert, south- 

 em California, and northeastward to the Painted Desert, Arizona. 



712. Thomomys *cabezonaB Merriam. 



Thomomys cabezonce Merr., Proc. Biol. Soc. Wash., xiv, 1901, p. no. 



♦Mr. Heller in his letters spells the name of the place from which this 

 species came, Cabazon. 



