Vol. Ill) GRINNELL— MAMMALS OF CALIFORNIA 327 



Thomomys nigricans Rhoads 



Tawny Pocket Gopher 



Original description — Thomomys fiilvus nigricans 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 altivallis 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 azvahnee Merriam, 

 Proc. Biol. Soc. Wash., 21, June 9, 1908, pp. 146, 147. 



