Microtus kirgisorum (Ognev, 1950) . [Mamm. U.S. S. R., Adjac. Count.], Acad. Sci. Moscow, vol. 7, p. 181.

TYPE LOCALITY: U.S. S. R., Kazakh. S.S. R., Dzhambulsk. Obi., Kirgizsk. (=Aleksandrovsk.) Ridge, Tuyuk Valley .

DISTRIBUTION: S. Kazakhstan, Kirgiziya, Tadzhikistan, and S.E. Turkmenia (U.S. S. R.); probably N. Afghanistan.

COMMENT: Subgenus Microtus; see Ognev, 1950. Considered a synonym of ilaeus, (= M. arvalis ilaeus) by Corbet, 1978:114, and Malygin and Deulin, 1979, Zool. Zh., 58:731-741; but Meier and Yatsenko, 1980, Zool. Zh., 59(2):283-288, provided evidence of specific distinctness and validity of the name. See also comment under arvalis .