216 Mcrriam — Descrqjtions of Eight Nciv Pochi Gojyhers. 



Measurements. — Type specimen: total length, 22S ; tail vertebrpe, 67; 

 hind foot, 30. Average of 14 specimens from type locality : total length, 

 217; tail vertebne, iu ; hind foot, 21). 2. 



Thomomys alpinus s}). nov. 



Ti/pc from ^It. Whitney, High Sierra, California. E\'act locality. Big 

 Cottonwood Meadows (aititude, 10,000 feet', 8 miles SE. of Mt. Whitney 

 peak. No. lUU, d' ad. U. S. Nat. Mus., Biological Survey Coll. Col- 

 lected August 6, 1S91, by B. H. Dutcher. Original No. 167. 



General rharactcrs. — Size rather small ; coloration dark ; similar in gen- 

 eral to 7\falpns, 1)nt fulvous tints much duller and j)aler ; skull smaller 

 and less angular. 



Color. — Tyi)e (in jxile pelage) : upper parts between sepia and drab 

 brown, suffused with very jiale dull fulvous brown; nose and sides of 

 mouth dusky, the dusky reaching up between eyes ; ears dusky, but with- 

 out distinct post-auricular spot ; under parts plundjeous, strongly washed 

 with ochraceous buff; throat, fore feet, and tail irregularly white; hind 

 feet white. There is a very much darker pelage in which the tips of the 

 hairs are russet brown. 



Cra^alal diuraders. — Skull rather small, rounded; zygomata spreading; 

 frontals broad and flat interorbitally ; nasals rather short. The skull of 

 T. alpiMHS differs from that of T. fultms in smaller size, shorter and less 

 angular zygomata, shorter nasals, more smoothly rounded braincase, and 

 less pronounced temporal ridges. 



Measurements. — Type specimen: total length, 228; tail vertebrye, 67; 

 hind foot, 30. A verage of 6 specimens from type locality: total length, 

 220.5; tail vertebne, 63; hind foot, 30.2. 



Thomomys nasicus sp. nov. 



7)/pe from Farewell Bend, Des Chutes River, Oregon. No. 79815, d ^f'- 

 U. S. Nat. Mus., Biological Survey Coll. Collected Aug. 4, 1896, by E. A. 

 Preble. Original No. 1274. 



General diaraders. — Similar to 2\ inazaina, but slightly paler, and with 

 distinctive cranial characters. 



Color. — Upper parts from in front of eyes to tail uniform pale russet 

 fulvous ; under parts dark plumbeous, strongly washed with pale fulvous ; 

 nose and front of muzzle pale dusky ; a dark spot around and behind ear ; 

 fore and hind feet and tail whitish. 



Cranial characters. — Skull long and slender, similarto that of 2'. mazama, 

 but rostrum longer; nasals exceedingly elongated; zygomata sloping 

 strongly backward; audital bu Ike very small; temporal ridges distant; 

 interparietal large and transversely elongated. 



Measurements. — Type specimen: total length, 214; tail vertebrae, 69 ; 

 hind foot, 27. 



