NORTH AMEEICAN LAND MAMMALS. 139 



*Peromyscus calif ornicus calif ornicus (Gambel). 



1848. Mus calif ornicus Gambel, Proc. Acad. Nat. Sci. Phila- 

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



1885. Hesperomys californicus True, Proc. U. S. Nat. Mus., vol. 

 7 (1884), p. 597. 1885. 



1895. Peromyscus californicus 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 intergi^adation with sub- 

 species insignis occurs. 



*Peromyscus californicus insignis (Rhoads). 



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

 delphia, p. 3,3. February 21, 1895. 



1907. Peromyscus californicus iiisignis 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. U. 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.) 



f 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, Ai-izona. 



Range. — Lower Sonoran zone of southeastern 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 Little 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. 



