Zapus Coues, 1876 . Bull. U.S. Geol. Geogr. Surv. Terr., ser. 2, 1:253.

COMMENT: Revised by Krutzsch, 1954, Univ. Kans. Publ. Mus. Nat. Hist., 7:349-472. A key to the genus was published by Whitaker, 1972, Mamm. Species, 11:1-7.

ISIS NUMBER: 5301410015004000000.