Perognathus flavus Baird, 1855 . Proc. Acad. Nat. Sei. Phila., 7:332.

TYPE LOCALITY: U.S.A., Texas, El Paso Co., El Paso .

DISTRIBUTION: S. W. Great Plains and intermountain plateaus from S. Dakota, E. Wyoming, and S. Utah (U.S.A.) to Sonora and Puebla (Mexico).

COMMENT: Includes merriami; see Wilson, 1973, Proc. Biol. Soc. Wash., 86: 191. Revised by Baker, 1954, Univ. Kans. Publ. Mus. Nat. Hist., 7:341 -347.

ISIS NUMBER: 5301410004005012001 as P. flavus .

5301410004005020001 as P. merriami .