318 CALIFORNIA ACADEMY OF SCIENCES (Proc. 4rH Se«. 



Syuoiiyiii — Dutcher Vole. 



Range — Boreal zone of the extreme southern Sierra Nevada, 

 in vicinity of Mount \\'hitney ; south to Jackass Meadow, 

 Tulare County, north to head of San Joaquin River, Fresno 

 County (Bailev. N. Amer. Fauna, 17. 1^00, p. 33: I\Ius. Vert. 

 Zool.)', 



Microtus californicus californicus (Peale) 



California Meadow Mouse 



Original description — An'icola calif ornica Peale, U. S. Ex- 

 ploring Exped., 8, 1848. p. 46, "pi. 11, f^g. 2." 



Type locality — San Francisco Bay, California. 



Syno)iyins — Arz'icola tron-bridgii Baird, Pac. R. R. Rep., 8, 

 1857, p. 529 (type from iNIonterey, California) : Arz'icola niO)i- 

 iana, part; California Vole; Microtus eJax, part. 



Range — Both Sonoran and Transition zones throughout the 

 state west of the Sierra Nevada and desert divides, including 

 the San Diegan district, from the ^lexican line north to the 

 Oregon line, and east at the north to Shasta Valley, centrally 

 to Onyx, Kern County : except beil of San Joaquii^-Sacramento 

 Valley, and narrow coast strip in vicinity of Cape Mendocino 

 (Bailey, N. Amer. Fauna, 17, 1900, p. 35 ; Mus. Vert. Zool.). 



Microtus californicus vallicola Bailey 

 Owens Valley Meadow Mouse 



Original descripfio)i — Microtus californicus vallicola Bailey, 

 Proc. Biol. Soc. Wash.. 12. April 30, 1898, p. 89. 



Type locality — Lone Pine, Inyo County, California, 



Synonym — Valley Vole. 



Range — Suitable parts of Upper and Lower Sonoran zones 

 on the ^lohave desert and in the Inyo region: south to Victor- 

 ville, San Bernardino County, east to Panamint Mountains, 

 and north through Owens Valley to Alvord (Bailey, N, Amer. 

 Fauna, 17, 1900, p. 36; Mus. Vert. Zool.). 



Microtus californicus constrictus Bailey 



Mendocino Meadow Mouse 



Original description — Microtus californicus constrictus 

 Bailey, N. Amer. Fauna, 17. Tune. 1900, pp. 36. 37. 



