Thomomys monticola J. A. Allen, 1893 . Bull. Am. Mus. Nat. Hist., 5:48.

TYPE LOCALITY: USA, California, El Dorado Co., Mt. Tallac, 7,500 ft. (2,286 m) .

DISTRIBUTION: Sierra Nevada Mtns of C and N California and extreme WC Nevada (USA).

SYNONYMS: pinetorum Merriam.

COMMENTS: Subgenus Thomomys . Revised by Johnson and Benson (1960); Thaeler (1968«) provided details of distribution in N California.