Zapus princeps Allen, 1893 . Bull. Am. Mus. Nat. Hist., 5:71.

TYPE LOCALITY: USA, Colorado, La Plata Co., Florida .

DISTRIBUTION: Canada and USA: S Yukon southeast to NE South Dakota, west to C Montana, southeast to SE Wyoming, S to NC New Mexico; northwest to N and C Utah (isolated population in E Utah), N and C Nevada, EC California north to SW, C and E Oregon, SE Washington northwest to S Yukon.

SYNONYMS: alleni, chrysogenys, cinereus, curtatus, idahoensis, kootenayensis, major, minor, nevadensis, oregonus, pacificus, palatinus, saltator, utahensis (see Hall, 1981).

COMMENTS: Formerly included luteus; see comment under hudsonius . Diagnosis, records, and range map provided by Hall (1981).