602 U. S. NATIONAL MUSEUM BULLETIN 205 



Microtus mexicanus mogollonensis (Mearns) * 



1890. Arvicola mogollonensis Mearns, Bull. Amer. Mus. Nat. Hist., vol. 2, 



p. 283, Feb. 21, 1890. 

 1897. Microtus mogollonensis Miller, Proc. Biol. Soc. Washington, vol. 11, 



p. 68, Apr. 21, 1897. 

 1932. Microtus mexicanus mogollonensis V. Bailey, North Amer. Fauna No. 53 



(December 1931), p. 204, Mar. 1, 1932. 

 Type Locality. — Baker's Butte, Mogollon Mountains, Coconino County, Ariz. 

 Range. — Plateau country of central Arizona, and yellow-pine forest area of 

 Mogollon Mountain region of New Mexico ; recorded from Mount Taylor, Datil, 

 Mirnbres, Magdalena, San Mateo, and Zuni Mountains (V. Bailey, North Amer. 

 Fauna No. 53 (December 1931), pp. 204-205, Mar. 1, 1932) . 



Microtus mexicanus hualpaiensis Goldmanf* 



1938. Microtus mexicanus hualpaiensis Goldman, Journ. Mamm., vol. 19, 

 No. 4, p. 493, Nov. 14, 1938. 



Type Locality. — Hualpai Peak, Hualpai Mountains, Mohave County, Ariz. 

 Altitude, 8,400 feet. Range. — Probably restricted to upper slopes of Hualpai 

 Mountains. 



Microtus mexicanus navaho Benson* 



1934. Microtus mexicanus navaho Benson, Proc. Biol. Soc. Washington, vol. 

 47, p. 49, Feb. 9, 1934. 



Type Locality. — Soldier Spring, east slope of Navaho Mountain, San Juan 

 County, Utah. Altitude, about 8,800 feet. Range.— Navaho Mountain, south- 

 eastern Utah and northeastern Arizona (see also, Benson, Univ. California Publ. 

 Zool., vol. 40, No. 14, p. 454, Dec. 31, 1935). 



Microtus mexicanus guadalupensis V. Bailey f* 



1902. Microtus mexicanus guadalupensis V. Bailey, Proc. Biol. Soc. Wash- 

 ington, vol. 15, p. 118, June 2, 1902. 



Type Locality.— Guadalupe Mountains, El Paso County, Tex. Altitude, 7,800 

 feet. Range. — Transition Zone of Guadalupe, Sacramento, White, and Man- 

 zano Mountains east of Rio Grande Valley, N. Mex. (V. Bailey, North Amer. 

 Fauna No. 53 (December 1931), p. 206, Mar. 1, 1932) ; and Guadalupe Moun- 

 tains of Texas. 



Microtus fulviventer Merriamf * 



1898. Microtus fulviventer Merriam, Proc. Biol. Soc. Washington, vol. 12, 

 p. 106, Apr. 30, 1898. 



Type Locality. — Cerro San Felipe, Oaxaca, Mexico. Altitude, 10,200 feet. 

 Range. — Central part of State of Oaxaca. 



xanthognathus — group 



Microtus xanthognathus (Leach) * 



1815. Arvicola xanthognathus Leach, Zool. Miscellany, vol. 1, p. 60. 



1884. Arvicola xanthognathus True, Proc. U. S. Nat. Mus., vol. 7 (App., Circ. 



29) , p. 597, Nov. 29, 1884. 

 1896. M[icrotus] xanthognathus Miller, North Amer. Fauna No. 12, p. 66, 



July 23, 1896. 



