Sorex tundrensis Merriam, 1900 . Proc. Wash. Acad. Sci., 2: 16.

TYPE LOCALITY: U.S.A., Alaska, St. Michael .

DISTRIBUTION: Siberia, from the Pechora R. to Chukotka, south to the Altai Mtns.; Mongolia and N.E. China; Alaska (U.S.A.); Yukon, N.W. Northwest Territories (Canada).

COMMENT: Youngman, 1975, Mammals of the Yukon Terr., Nat. Mus. Can. Publ. Zool., 10, provided evidence that tundrensis is specifically distinct from arcticus . Palearctic populations formerly referred to arcticus were referred to tundrensis by Junge et al., 1981, Abst. Tech. Pap., 61 st Ann. Meet., Am. Soc. Mamm., No. 45; see comments under arcticus . Kozlovskii, 1976, Zool. Zh „ 50:756-762 found irkutensis and sibiriensis to be karyotypically distinct.