Microtus abbreviatus Miller, 1899 . Proc. Biol. Soc. Washington, 13: 13.

TYPE LOCALITY: USA, Alaska, Bering Sea, Hall Island .

DISTRIBUTION: Hall and St. Matthew Islands, Bering Sea (Alaska, USA).

SYNONYMS: fisheri.

COMMENTS: An insular relative of M. miurus of the Alaskan mainland, generally retained as a species (Fedyk, 1970; Rausch and Rausch, 1968). Karyotype reported by Rausch and Rausch (1968) and chromosomal affinities within subgenus Stenocranius discussed by Fedyk (1970). Also see accounts of M. gregalis and M. miurus .