RODENTIA: CRICETIDAE 469 



Type Locality. — El Portal, Mariposa County, Calif. Altitude, 2,500 feet. 

 Range. — Lower western slopes of southern Sierra Nevada, south at least from 

 northwestern Mariposa County to Kern County, Calif. 



Peromyscus calif ornicus iiisignis Rhoads* 



1895. Peromyscus insignis Rhoads, Proc. Acad. Nat. Sci. Philadelphia, vol. 

 47, p. 33, Feb. 21, 1895. 



1907. Peromyscus californicus insignis Mearns, U. S. Nat. Mus. Bull. 56, 

 p. 429, Apr. 13, 1907. 



Type Locality. — Dulzura, San Diego County, Calif. Range. — Southern coastal 

 district of California at least from Ventura County (probably eastern Santa 

 Barbara County) south, west of interior deserts, to San Quintin (lat. 30° 29' 

 N.), Baja California, Mexico, including San Bernardino and San Jacinto 

 Mountains in California and Sierra Juarez and Sierra San Pedro Martir in 

 northern Baja California (Grinnell and Orr, Journ. Mamm., vol. 15, No. 3, p. 218, 

 Aug. 10, 1934). 



Peromyscus eremicus eremicus (Baird) f* 



1858. Hesperomys eremicus Baird, Mammals, in Rep. Expl. Surv. Railr. to 



Pacific, vol. 8, pt. 1 (Washington, 1857), p. 479, July 14, 1858. 

 1884. Hesperomys leucopus eremicus True, Proc. U. S. Nat. Mus., vol. 7 

 (App., Circ. 29) , p. 597, Nov. 29, 1884. 



1895. Peromyscus eremicus J. A. Allen, Bull. Amer. Mus. Nat. Hist., vol. 7, 

 p. 226, June 29, 1895. 



1896. Peromyscus eremicus arenarius Mearnsf , Preliminary diagnoses of new 

 mammals from the Mexican border of the United States, p. 2, May 25, 1896. 

 (Preprint of Proc. U. S. Nat. Mus., vol. 19, p. 138, Dec. 21, 1896. Near 

 El Paso, El Paso County, Tex.) 



Type Locality. — Old Fort Yuma, Imperial County, Calif., on Colorado River 

 opposite Yuma, Ariz. Range. — Lower Sonoran Zone of northeastern Baja Cali- 

 fornia east of mountain ranges from vicinity of San Luis Bay northward 

 through Colorado Desert and eastern portion of Mohave Desert in Imperial and 

 extreme eastern San Diego Counties to north end of Death Valley, Inyo County, 

 and west from Valley of Colorado River to Victorville and Oro Grande, San 

 Bernardino County, and to Banning, Riverside County, Calif. (Grinnell, Univ. 

 California Publ. Zool., vol. 40, No. 2, p. 172, Sept. 26, 1933) ; and from 

 northwestern Sonora, except Pinacate region, from as far east as Providencia 

 mines, south and west to Hermosillo (Burt, Univ. Michigan Mus. Zool. Misc. 

 Publ. 39, p. 55, Feb. 15, 1938), northward through western Arizona to southern 

 Nevada (Hall, Mammals of Nevada, p. 509, July 1, 1946) and southwestern 

 Utah; and from southern New Mexico (V. Bailey, North Amer. Fauna No. 53 

 (December 1931), p. 158, Mar. 1, 1932) and western Texas (see Borell and 

 Bryant, Univ. California Publ. Zool., vol. 48, No. 1, pp. 30-31, Aug. 7, 1942) 

 southward through eastern Chihuahua and Coahuila to northeastern Durango, 

 Mexico. 



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