Vol. Ill] GRINNELL— MAMMALS OF CALIFORNIA 331 



Perognathus parvus moUipilosus Coues 

 Coues Pocket Mouse 



Original description — Perognathus moUipilosus Coues, Proc. 

 Acad. Nat. Sci. Phila., August 1875, p. 296. 



Type locality — Fort Crook (aliout 2 miles northeast of 

 Burgettville), Shasta County, Cahfornia. 



Synonym — Perognathus monticola. 



Range — Upper Sonoran, Transition, and lower Boreal zones 

 in the Modoc region, from Mount Shasta and vicinity east to 

 the Warner Mountains, and south to Vinton, Plumas County 

 (Osgood, N. Amer. Fauna, 18, 1900, p. 37; Mus. Vert. Zool.). 



Perognathus parvus olivaceus Merriam 

 Great Basin Pocket Mouse 



Original description — Perognathus olivaceus Merriam, N. 

 Amer. Fauna, 1, October, 1889, pp. IS, 16. 



Type locality — Kelton, Bo.xelder County, Utah. 



Range — Upper Sonoran and lower Transition zones east of 

 the Sierra Nevada, from Long Valley, Mono County, south to 

 foothills due west of Independence, Inyo County ; also at 

 Lower Alkali Lake, extreme eastern border of Modoc County 

 (Osgood, N. Amer. Fauna, 18, 1900, p. 38; Mus. Vert. Zool). 



Perognathus parvus magruderensis Osgood 

 Mount Magruder Pocket Mouse 

 Original description — Perognathus parvus magruderensis 

 Osgood, N. Amer. Fauna, 18, September, 1900, p. 38. 



Type locality — Mount Magruder, 8000 feet altitude, Esmer- 

 alda County, Nevada. 



Range — Upper Sonoran and Transition zones on the desert 

 ranges of the Inyo region, from the White Mountains south to 

 the Panamint and Coso ranges (Osgood, supra cit.; Mus. Vert. 

 Zool). 



Perognathus xanthonotus Grinnell 



Walker Pass Pocket Mouse 



Original description — Perognathus xanthonotus Grinnell, 

 Proc. Biol. Soc. Wash., 25, July 31, 1912, pp. 127, 128. 



Type locality — Freeman Canyon, 4900 feet altitude, east 

 slope of Walker Pass, Kern County, California. 



