Ammospermophilus leucurus (Merriam, 1889) . N. Am. Fauna, 2: 19.

TYPE LOCALITY: "San Gorgonio Pass, [Riverside Co.], California [USA]."

DISTRIBUTION: E California and SE Oregon to Colorado and New Mexico (USA), south to Baja California Sur (Mexico).

SYNONYMS: canfieldiae Huey, 1929; cinamomeus (Merriam, 1890); esentante (Hansen, 1955); extimus Nelson and Goldman, 1929; notom (Hansen, 1955); peninsulae (J. Allen, 1893); pennipes A. Howell, 1931; tersus Goldman, 1929; vinnulus (Elliot, 1904).

COMMENTS: Reviewed by Belk and Smith (1990, Mammalian Species, 368).