Microtus transcaspicus Satunin, 1905 . Izv. Kavkas. Mus., 2:57 -60.

TYPE LOCALITY: U.S. S. R., Turkmen S.S. R., Ashkhabadsk. Obi., Kopet-Dag Mts., Chuli Valley, near Ashkhabad .

DISTRIBUTION: Turkmenia, from Caspian Sea east to N. Afghanistan; south to N. Iran.

COMMENT: Subgenus Microtus; see Aksenova, 1978, Trudy Zool. Inst., Leningr., 79:91- 101. Meier, 1974, Trans. I Inti. Theriol. Congr., 1:400-401., provided evidence of specific distinctness, but see Ognev, 1950, [Mammals of the U.S. S.R. and Adj. Count.], Vol. 7, Rodents, Engl. Trans., 1964:1 -626, who considered this a subspecies of arvalis . Provisionally includes khorkoutensis; see Corbet, 1978:114; reviewed by Malygin, 1978, Zool. Zh„ 67(7): 1062-1073.

ISIS NUMBER: 5301410008080044001.