VoL. III] GRINNELL—MAMMALS OF CALIFORNIA SRT 
Thomomys nigricans Rhoads 
Tawny Pocket Gopher 
Original description—Thomomys fulvus mgricans Rhoads, 
Proc. Acad. Nat. Sci. Phila., March 19, 1895, p. 36. 
Type locality—Witch Creek, San Diego County, California. 
Synonym—Thomomys fulvus, part; Dark-colored Gopher. 
Range—Upper Sonoran and lower Transition zones in the 
San Diegan district, from near the Mexican line north to the 
west side of the San Jacinto Mountains (Mus. Vert. Zool.). 
Thomomys altivallis Rhoads 
San Bernardino Mountain Pocket Gopher 
Original description—Thomomys altwallis Rhoads, Proc. 
Acad. Nat. Sci. Phila., March 19, 1895, pp. 34, 35. 
Type locality—San Bernardino Mountains, 5000 feet alti- 
tude, San Bernardino County, California. 
Range—Transition and Boreal zones on the San Bernar- 
dino and San Jacinto mountains, San Bernardino and River- 
side counties (Mus. Vert. Zool.). 
Thomomys alpinus alpinus Merriam 
Mount Whitney Pocket Gopher 
Original description—Thomomys alpinus Merriam, Proc. 
Biol. Soc. Wash., 11, July 15, 1897, p. 216. 
Type locality—Cottonwood Meadows, 10,000 feet altitude, 
8 miles southeast of Mount Whitney, in Inyo County, Cali- 
fornia. 
Synonym—Alpine Pocket Gopher. 
Range—Transition and Boreal zones in the southern Sierra 
Nevada, from Taylor Meadow (near Kern County line), 
Tulare County, north at least to head of Kern River, Tulare 
County; ranging also down on the adjacent east slopes, in 
Inyo County (Mus. Vert. Zool.). 
Thomomys alpinus awahnee Merriam 
Yosemite Pocket Gopher 
Original description—Thomomys alpinus awahnee Merriam, 
Proc. Biol. Soc. Wash., 21, June 9, 1908, pp. 146, 147. 
