Sorex nanus Merriam, 1895. N. Am. Fauna, 10:81.
TYPE LOCALITY: U.S.A., Colorado, Larimer Co., Estes Park.
DISTRIBUTION: Rocky Mtns, from Montana to New Mexico; South Dakota; Arizona (U.S.A.).
COMMENT: Very similar to, and perhaps conspecific with, tenellus; see review by Hoffmann and Owen, 1980, Mamm. Species, 131:1-4.
ISIS NUMBER: 5301403007018024001.