Order Carnivora Author W. Christopher Wozencraft text 1993 Smithsonian Institution Press Washington and London Editor Don E. Wilson Editor DeeAnn M. Reeder Mammal Species of the World (2 nd Edition) 279 348 book chapter http://doi.org/10.5281/zenodo.7359191 1-56098-217-9 7359191 Vulpes velox (Say, 1823) . In James, Account of an Exped. from Pittsburgh to the Rocky Mtns, 1:487 . TYPE LOCALITY: "camp on the river Platte, at the fording place of the Pawnee Indians, twenty-seven miles below the confluence of the North and South, or Paduca Forks." [Camp on 20 June 1820 reported to be at 40°59'15'N (vol. 2)] . DISTRIBUTION: C North America from SE British Columbia , SC Alberta and SW Saskatchewan ( Canada ) to NW Texas (panhandle) and E New Mexico , east of Rockies ( USA ). STATUS: U.S. ESA - Endangered as V. v. hebes ( Canada populations) and as V. macrotis mutica . SYNONYMS: arizonensis Goldman, 1931 ; arsipus Elliot, 1903; devia Nelson and Goldman, 1909; hebes Merriam, 1902; macrotis Merriam, 1888 ; muticus Merriam, 1902 ; neomexicana Merriam, 1902; nevadensis Goldman, 1931; tenuirostris Nelson and Goldman, 1931; zinseri Benson, 1938. COMMENTS: Reviewed by Egoscue (1979 , Mammalian Species, 122) and McGrew (1979 , Mammalian Species, 123, as V. macrotis ). Revised by Waithman and Roest (1977) and Dragoo et al. (1990) . Blair et al. (1968) , Lechleitner (1969) , Bueler (1973) , and Dragoo et al. (1990) considered macrotis and velox conspecific. Packard and Bowers (1970) , Rohwer and Kilgore (1973) , and Thornton and Creel (1975) (who found hybrids between velox and macrotis but concluded they were of reduced viability) retained both as species.