308 BULLETIN 128, UNITED STATES NATIONAL MUSEUM. 



*Reithrodontomys megalotis aztecus (Allen). 



1893. Reithrodontomys aztecus Allex, Bull. Amer. Mus. Nat. 



Hist., vol. 5, p. 79. April 28, 1893. 

 1914. Reithrodontomys megalotis aztecus Howell, North Amer. 



Fauna, No. 36, p. 30. June 5, 1914. 

 Type Locality. — La Plata, San Juan Count}^, New Mexico. 

 (See Allen, Bull. Amer. Mus. Nat. Hist., vol. 7, p. 125, May 21, 

 1895.) 

 Range. — ^Northern New Mexico, northeastern Arizona, south- 

 eastern Utah, and western Colorado, north to Grand Junction 

 and Rifle. 



*Reithrodontomys megalotis dychei (Allen). 



1895. Reithrodontomys dychei Allen, Bull. Amer. Mus. Nat. 

 Hist., vol. 7, p. 120. May 21, 1895. 



1895. Reithrodontomys dychei nehrascensis Allen, Bull. Amer. 

 Mus. Nat. Hist., vol. 7, p. 122. May 21, 1895. (Kennedy, 

 Cherry County, Nebraska.) 



Type Locality^. — Lawrence, Douglas County, Kansas. 



Range. — Greater part of Kansas, Nebraska, Iowa, Missouri, 

 and South Dakota; southern North Dakota; southeastern Mon- 

 tana; eastern Colorado and eastern Wyoming. 



t*Reithrodontomys megalotis nigrescens Howell. 



1914. Reithrodontomys megalotis nigrescens Howell, North Amer. 



Fauna, No. 36, p. 32. June 5, i914. 

 Ty'pe Locality. — Payette, Canyon County, Idaho. 

 Range. — Eastern Oregon and western Idaho; north to Prescott, 



Washington, south to Bieber, California. 



t*Reithrodontomys megalotis longicaudus (Baird). 



1857. Reithrodon longicauda Baird, Mamm. N. Amer., p. 451. 



1885. Ochetodon longicauda True, Proc. U. S. Nat. Mus., vol. 7 

 (1884), p. 598. i885. 



1893. Reithrodontomys pallidus Rhoads, Amer. Nat., vol. 27, 

 p. 835. September, 1893. (Santa Ysabel, San Jacinto 

 Mountains, San Diego County, California.) 



1895. Reithrodontomys longicauda Allen, Bull. Amer. Mus. Nat. 

 Hist., vol. 7, p. 129. May 21, 1895. 



1899. Reithrodontomys Tdamathensis Merriam, North Amer. 

 Fauna, No. 16, p. 93. October 28, 1899. (Big Spring (Mayten) , 

 Shasta Valley, Siskiyou County, California.) 



1913. ReitJirodontomys megalotis longicauda Grinnell, Proc. 

 California Acad. Sci., ser. 4, vol. 3,' p. 303. August 28, 1913. 



Type Locality. — Petaluma, Sonoma County, California. 



Range. — Greater part of western California, east to the foot- 

 hills of the Sierra Nevada, San Bernardino, and San Jacinto 

 Ranges; north to Grants Pass, Oregon, and south into north- 

 western Lower California to about latitude 32°. 



