Voz. III] GRINNELL—MAMMALS OF CALIFORNIA 331 
Perognathus parvus mollipilosus Coues 
Coues Pocket Mouse 
Original description—Perognathus mollipilosus Coues, Proc. 
Acad. Nat. Sci. Phila., August 1875, p. 296. 
Type locality—Fort Crook (about 2 miles northeast of 
Burgettville), Shasta County, California. 
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 iaunaie Ocroper, ISSO polis, le, 
Type locahty—Kelton, Boxelder 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 descripiion—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, 
Rrocsbiokesoe, Wash. 25, \uly Sl) 1902) pp l27 128: 
Type locality—Freeman Canyon, 4900 feet altitude, east 
slope of Walker Pass, Kern County, California. 
