Spermophilus variegatus (Erxleben, 1777) . Syst. Regn. Anim., 1:421.

TYPE LOCALITY: "in Mexico." Restricted by Nelson (1898:898) to "Valley of Mexico, near City of Mexico," [Distrito Federal, Mexico].

DISTRIBUTION: S Nevada to SW Texas and Utah (USA) to Puebla (C Mexico).

SYNONYMS: buccatus (Lichtenstein, 1830); buckleyi Slack, 1861; couchii Baird, 1855; grammurus (Say, 1823); jugions (V. Bailey, 1913); macrourus Bennett, 1833; robustus (Durrant and Hansen, 1954); rupestris (J. Allen, 1903); tiburonensis Jones and Manning, 1989; tularosae (Benson, 1932); Utah (Merriam, 1903).

COMMENTS: Subgenus Otospermophilus (Hall, 1981:399) . Reviewed by Oaks et al. (1987, Mammalian Species, 272).