Perognathus longimembris (Coues, 1875) . Proc. Acad. Nat. Sci. Philadelphia, 27:305.

TYPE LOCALITY: USA, California, Kern Co., Tehachapi Mtns, Old Fort Tejon .

DISTRIBUTION: SE Oregon and W Utah (USA) south to N Sonora and Baja California Norte (Mexico).

STATUS: IUCN - Endangered as subspecies brevinasus and psammophilus. Two California subspecies (brevinasus and pacificus) listed as Species of Special Concern by the State of California Dept, of Fish and Game.

SYNONYMS: aestivus Huey, arcus Benson, arenicola Stephens, arizonensis Goldman, bangsi Mearns, bombycinus Osgood, brevinasus Osgood, cantwelli, von Bloeker, elibatus Elliot, gulosus Hall, internationalis Huey, kinoensis Huey, nevadensis Merriam, pacificus Merans, panamintinus Merriam, pericalles Elliot, pimensis Huey, psammophilus von Bloeker, salinensis Bole, tularensis Richardson, venustus Huey, Virginis Huey.

COMMENTS: Revised by Osgood (1918); subspecies listed by Hall (1981).