526 U. S. NATIONAL MUSEUM BULLETIN 205 



Sigmodon hispidus confinis Goldmanf * 



1918. Sigmodon hispidus confinis Goldman, Proc. Biol. Soc. Washington, 

 vol. 31, p. 21, May 16, 1918. (See also, Hall and Davis, Proc. Biol. Soc. 

 Washington, vol. 47, p. 53, Feb. 9, 1934.) 

 Type Locality. — Safford, Graham County, Ariz. Range. — Upper part of Gila 

 River Valley in southeastern Arizona. 



Sigmodon hispidus arizonae Mearns* 



1890. Sigmodon hispidus arizonae Mearns, Bull. Amer. Mus. Nat. Hist., vol. 2, 

 p. 287, Feb. 21, 1890. 



Type Locality. — Fort Verde, Yavapai County, Ariz. Range. — A small area 

 in central Arizona north of Gila River. (See Hall and Davis, Proc. Biol. Soc. 

 Washington, vol. 47, fig. 1, p. 54, Feb. 9, 1934.) 



Sigmodon hispidus jacksoni Goldmanf* 



1918. Sigmodon hispidus jacksoni Goldman, Proc. Biol. Soc. Washington, 

 vol. 31, p. 22, May 16, 1918. 



Type Locality. — Three miles north of Fort Whipple, near Prescott, Yavapai 

 County, Ariz. Altitude, 5,000 feet. Range. — Known only from plateau region 

 near Prescott, Ariz. 



Sigmodon hispidus plenus Goldmanf'"* 



1928. Sigmodon hispidus plenus Goldman, Proc. Biol. Soc. Washington, vol. 

 41, p. 205, Dec. 18, 1928. 



Type Locality. — Parker, Yuma County, Ariz. Altitude, 350 feet. Range. — 

 Colorado River Valley, above confluence of Colorado and Gila Rivers, as far 

 north as Needles, San Bernardino County, Calif.; and extreme southern Nevada 

 (Hall, Mammals of Nevada, p. 525, July 1, 1946. See also Hall and Davis, 

 Proc. Biol. Soc. Washington, vol. 47, fig. 1, p. 54, Feb. 9, 1934) . 



Sigmodon hispidus eremicus Mearnsf * 



1897. Sigmodon hispidus eremicus Mearns, Preliminary diagnoses of new mam- 

 mals of the genera Sciurus, Castor, Neotoma, and Sigmodon, from the Mexi- 

 can border of the United States, p. 4, Mar. 5, 1897. (Preprint of Proc. U. 

 S. Nat. Mus., vol 20, p. 504, Jan. 19, 1898.) 



Type Locality. — Cienega Well, 30 miles south of Mexican boundary monument 

 No. 204 on east bank of Colorado River, Sonora, Mexico. Range. — Along east 

 side of Colorado River in western Arizona and extreme northwestern Sonora 

 (Burt, Univ. Michigan Mus Zool. Misc. Publ. 39, p. 61, Feb. 15, 1938) ; along 

 west side of lower Colorado River, in Imperial County, Calif., south from near 

 Palo Verde to near Pilot Knob, and along irrigation canals extending northward 

 from Colorado delta into Imperial County (Grinnell, Univ. California Publ. 

 Zool., vol. 40, No. 2, p. 178, Sept, 26, 1933) ; and southward into northeastern 

 Baja California (Hall and Davis, Proc. Biol. Soc. Washington, vol. 47, fig. 1, 

 p. 54, Feb. 9, 1934) . 



Sigmodon hispidus toltecus (Saussure) * 



1860. [Hesperomys] toltecus Saussure, Rev. Mag. Zool., Paris, ser. 2, vol. 12, 



p. 98. 

 1902. Sigmodon hispidus toltecus V. Bailey, Proc. Biol. Soc. Washington, 

 vol. 15, p. 110, June 2, 1902. 



