Spermophilus atricapillus W. E. Bryant, 1889 . Proc. Calif. Acad. Sci., ser. 2, 2: 26.

TYPE LOCALITY: Mexico, Baja California Sur, Comondu .

DISTRIBUTION: Baja California (Mexico).

COMMENT: Subgenus Otospermophilus; see Hall, 1981:402. Gromov et al., 1965:145, considered Otospermophilus a distinct genus.

ISIS NUMBER: 5301410002032004001.