592 U. S. NATIONAL MUSEUM BULLETIN 205 



Microtias montanus nexus Hall and Hay ward* 



1941. Microtus montanus nexus Hall and Hayward, Great Basin Naturalist, 

 vol. 2, No. 2 (June 30) , p. 106, July 20, 1941. 



Type Locality. — West Canyon, Oquirrh [Oquirrah] Range, Utah County, Utah. 

 Range. — Valleys and mountains of central Utah from Ogden south to Fish Lake 

 Plateau; limits of range undetermined. 



Microtus montanus caryi V. Bailey f* 



1917. Microtus montanus caryi V. Bailey, Proc. Biol. Soc. Washington, vol. 

 30, p. 29, Feb. 21, 1917. 



Type Locality. — Milford, Fremont County, Wyo. Range. — -Meadows along 

 Bear, Green, and Wind River Valleys in arid sagebrush sections of western and 

 southwestern Wyoming. 



Microtus montanus fusus Hall* 



1938. Microtus montanus fusus Hall, Proc. Biol. Soc. Washington, vol. 51, 

 p. 131, Aug. 23, 1938. 



Type Locality. — Two and one-half miles east of summit of Cochetopa Pass, 

 Saguache County, Colo. Range.— Rocky Mountain region southward from Kin- 

 ney Ranch, Sweetwater County, in southern Wyoming, to Florida, La Plata 

 County, in southern Colorado; presumably also in San Juan Range (8,700 to 

 9,900 feet) in north-central New Mexico (V. Bailey, North Amer. Fauna No. 53 

 (December 1931), p. 198, Mar. 1, 1932). 



Microtus montanus arizonensis V. Bailey f * 



1898. Microtus montanus arizonensis V. Bailey, Proc. Biol. Soc. Washington, 

 vol. 12, p. 88, Apr. 30, 1898. 



Type Locality. — Springerville, Apache County, Ariz. Range. — East-central 

 Arizona; and Zuni and Jemez Mountains, N. Mex. (V. Bailey, North Amer. Fauna 

 No. 53 (December 1931), p. 199, Mar. 1, 1932). 



californicus — group 41 

 Microtus calif ornicus calif ornicus (Peale)f * 



1848. Arvicola californica Peale, Mammalia and ornithology, in United States 



exploring expedition, during the years 1838-42, under the command of 



Charles Wilkes, U. S. N., Philadelphia, vol. 8, p. 46. 

 1853. Arvicola edax Le Contef, Proc. Acad. Nat. Sci. Philadelphia, vol. 6 



(1852-1853), p. 405. (California, south of San Francisco. Probably 



Monterey according to R. Kellogg, Univ. California Publ. Zool., vol. 21, No. 



1, p. 18, Dec. 28, 1918.) 

 1858. Arvicola trowbridgii Bairdf, Mammals, in Rep. Expl. Surv. Railr. to 



Pacific, vol. 8, pt. 1 (Washington, 1857) , p. 529, July 14, 1858. (Monterey, 



Calif.) 

 1897. [Microtus] californicus Trouessart, Catalogus Mammalium . . ., fasc. 



3, p. 563. 

 Type Locality. — Vicinity of San Francisco Bay, Calif. ; probably at San Fran- 

 cisquito Creek, near Palo Alto, Santa Clara County. Range. — Coastal region 



41 Races of Microtus californicus revised by R. Kellogg, Univ. California Publ. Zool., vol. 21, 

 No. 1, pp. 1-42, Dec. 28, 1918. 



