242 BULLETIN 128, UNITED STATES NATIONAL MUSEUM. 



t*Thomomys perpallidus perpallidus — Continued. 



1893. Thowomys perpallidus Allen, Bull. Amer. Mus. Nat. Hist., 



vol. 5, p. 54." April 28, 1893. 

 Type Locality. — ^Palm Springs, Riverside County, California. 

 Range. — Colorado Desert, southern California, from Whitewater 



south to Sal ton Sea. 



*Thomomys perpallidus albatus (Grinnell). 



1912. Thomomys alhatus Grinnell, Univ. Calif. Publ. Zool., 

 vol. 10, p. 172. June 7, 1912. 



1915. Thomomys perpallidus alhatus Bailey, North Amer. Fauna, 

 No. 39, p. 70. November 15, 1915. 



Type Locality. — West side of Colorado River, at old Hanlon 

 ranch, near Pilot Knob, Imperial County, California. 



Range. — Southeastern California and northeastern Lower Cali- 

 fornia from Carrizo Creek south to Gardner's Lagoon, Salton 

 River. 



*Thomomys perpallidus mohavensis Grinnell. 



1918. Thomomys perpallidus mohavensis Grinnell, Univ. Calif. 



Publ. Zool., vol. 17, p. 427. April 25, 1918. 

 Type Locality. — Mohave River bottom near Victorville, San 



Bernardino County, California. Altitude, 2,700 feet. 



*Thomomys perpallidus chrysonotus (Grinnell). 



1912. Thomomys chrysonotus Grinnell, LTniv. Calif. Publ. Zool., 



vol. 10, p. 174. June 7, 1912. 

 1915. Thomomys perpallidus chrysonotus Bailey, North Amer. 



Fauna, No. 39, p. 71. November 15, 1915. 

 Type Locality. — Ehrenberg, Yuma County, Arizona. 

 Range. — Southwestern Arizona and northwestern Sonora, from 



Ehrenberg south to near mouth of Colorado River, and east to 



Quitobaquito. 



t*Thomomys perpallidus perpes (Merriam). 



1901. Thomomys aureus perpes Merriam, Proc. Biol. Soc. 

 Washington, "vol. 14, p. 111. July 19, 1901. 



1903. Thomomys scapterus Elliot, Field Columb. Mus., publ. 

 87, zool. ser.. vol. 3, p. 248. December. 1903. (Hannopee 

 Canyon, Panamint Mountains, Inyo County, California.) 



1915. Thomomys perpallidus perpes Bailey, North Amer. Fauna, 

 No. 39, p. 72. November 15, 1915. 



Type Locality. — Lone Pine, Owens Valley, Inyo County, 

 California. 



Range. — Upper Sonoran desert valleys and mountain slopes 

 of eastern California, from near head of Owens Valley south to 

 Hesperia and Morongo Valley, into the valley of Kern River, 

 and east to the Providence Mountains, California, and the 

 Grapevine Mountains, Nevada. 



