NORTH AMERICAN LAND MAMMALS. 139 



*Peromyscus calif orniciis calif ornicus (Gambel). 



1848. 2Ius californicus CJambel, Proc. Acad. \at. Sci. Pliila- 

 delphia, vol. 4, p. 78. August, 1848. 



1885. Hesperomys c'alifornicus True, Proc. U. S. Nat. Mus., vol. 

 7 (1884), p. 597. 1885. 



1895, Peromyscus califomicus Rhoads, Proc. Acad. Nat. Sci. 

 Philadelphia, p. 34. February 21, 1895. 



Type Locality. — Monterey, Monterey County, California. 



Range. — Upper Sonoran and transition zones of the coast 

 region of California from San Francisco Bay south to the 

 vicinity of Santa Barbara, where intergTadation \\'ith sub- 

 species insignis occurs. 



*Peromyscus califomicus insignis (Rhoads). 



1895. Peromyscus insignis Rhoads, Proc. Acad. Nat. Sci. Phila- 

 delphia, p. 33. February 21, 1895. 



1907. Peromyscus califomicus insignis Mearns, Bull. U. S. Nat. 

 Mus., No. 56, p. 429. April 13, 1907. 



Type Locality. — Dulzura, San Diego County, California. 



Range. — Upper and lower Sonoran zones of the western valleys 

 and foothills of southwestern California and thence south 

 into northern Lower California. 



t*Peromyscus eremicus eremicus (Baird). 



1857. Hesperomys eremicus Baird, Mamm. N. Amer., p. 479. 



1885. Hesperomys leucopus eremicus True, Proc. LT. S. Nat. Mus., 

 vol. 7 (1884), p. 597. 1885. 



1895. Peromyscus eremicus Allen, Bull. Amer. Mus. Nat. Hist., 



vol. 7, p, 226. June 29, 1895. 



f 1896. Peromyscus eremicus arenarius Mearns, Proc. U. S. Nat. 



Mus., vol. 19, p. 138. May 25, 1896. (Near El Paso, Texas.) 



•1-1896. Peromyscus merriami Mearns, Proc. U. S. Nat. Mus., vol. 



19, p. 138. May 25, 1896. (Sonoyta, Sonora, Mexico.) 



Type Locality. — Old Fort Yuma, Imperial County, California, 

 opposite Yuma, Arizona. 



Range. — Lower Sonoran zone of soutlieastern California and 

 northeastern Lower California east of the mountain ranges as 

 far south as the vicinity of San Luis Bay; eastward to western 

 Texas, and south to border States of eastern Mexico; north- 

 ward along the Colorado River, at least to the vicinity of the 

 mouth of the I^ittle Colorado, also extending from the Colorado 

 River along the Virgin Valley to St. George, Utah, and north- 

 westward, crossing southern Nevada, to the Death Valley 

 region of California. 



