Vor. IIT] GRINNELL—MAMMALS OF CALIFORNIA Sit 
Type locality—South Yolla Bolly Mountain, Trinity County, 
California. 
Range—As far as known, only in Boreal zone at the type 
locality, as above. 
Lagurus curtatus (Cope) 
Short-tailed Meadow Mouse 
Original description—Arvicola curtata Cope, Proc. Acad. 
Nat. Sei, Phila, 1868; p: 2: 
Type locality—Pigeon Spring, Mount Magruder, Nevada, 
near California boundary line. 
Synonym—Short-tailed Vole; Microtus curtatus. 
Range—Transition zone on the arid mountains in the Inyo 
region; Inyo and White mountains (Bailey, N. Amer. Fauna, 
17, 1900, pp. 67, 68). 
Fiber zibethicus mergens Hollister 
Nevada Muskrat 
Original description—Fiber zibethicus mergens Hollister, 
Proc. Biol. Soc. Wash., 23, February 2, 1910, p. 1. 
Type locality—Fallon, Churchill County, Nevada. 
Synonym—Ondatra zibethica mergens. 
Range—Extreme eastern part of Modoc region: Eagle Lake 
and Susanville, Lassen County (Hollister, N. Amer. Fauna, 
S27 LOVE pi 2720)))- 
Fiber zibethicus pallidus Mearns 
Pallid Muskrat 
Original description—Fiber zibethicus pallidus Mearns, Bull. 
Amer. Mus. Nat. Hist., 2, February, 1890, p. 280. 
Type locality—Old Fort Verde (Camp Verde), Yavapai 
County, Arizona. 
Synonym—Ondatra zibethica pallida. 
Range—Colorado River and tributary sloughs, from the 
Nevada line to the Mexican boundary; also irrigation canals in 
the Imperial Valley, Imperial County (Mus. Vert. Zool. ; Hol- 
lister, N. Amer. Fauna, 32, 1911, pp. 28, 29). 
