Tamias obscurus J. A. Allen, 1890 . Bull. Am. Mus. Nat. Hist., 3:70.

TYPE LOCALITY: "San Pedro [Martir] Mountains" [near Vallecitos, Baja California Norte, Mexico] .

DISTRIBUTION: S California (San Bernardino Co., USA) to C Baja California (Mexico).

SYNONYMS: davisi (Callahan, 1977); meridionalis (Nelson and Goldman, 1909).

COMMENTS: Subgenus Neotamias . Regarded by Howell (1929) as a synonym of merriami; but see Callahan (1977) who provided evidence of specific distinctness and included davisi and meridionalis in this species.