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

TYPE LOCALITY: Mexico, Baja California, Sierra San Pedro Martir, near Vallecitos .

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

COMMENT: Regarded by Howell, 1929, as a synonym of merriami; but see Callahan, 1977, J. Mammal., 58: 188-201, who provided evidence of specific distinctness and included meridionalis and davisi in this species.