Vol. Ill] GRINNELL— MAMMALS OF CALIFORNIA 321 



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. Sci. Phila., 1868, p. 2. 



Type locality — Pigeon Spring, Mount Magruder, Nevada, 

 near California boundary line. 



Synonym — Short-tailed Vole; Microtus curtains. 



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 sibethicus mergens Hollister, 

 Proc. Biol. Soc. Wash., 23, February 2, 1910, p. 1. 



Type locality — Fallon, Churchill County, Nevada. 



Synonym — Ondatra dbethica mergens. 



Range — Extreme eastern part of Modoc region: Eagle Lake 

 and Susanville, Lassen County (Hollister, N. Amer. Fauna, 

 32, 1911, pp. 27, 28). 



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 sibethica 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). 



