RODENTIA: CRICETIDAE 517 



Onychomys leucogaster albescens Merriamf * 



1904. Onychomys leucogaster albescens Merriam, Proc. Biol. Soc. Washing- 

 ton, vol. 17, p. 124, June 9, 1904. 



Type Locality. — Samalayuca, Chihuahua, Mexico. Range. — Known only from 

 sand dunes at type locality in northern Chihuahua, and from Mexican boundary 

 monument No. 1 opposite El Paso, Tex. Specimens from El Paso and from 

 near Strauss, Dona Ana County, N. Mex., regarded as approaching albescens 

 (Benson, Univ. California Publ. Zool, vol. 40, No. 1, p. 36, June 13, 1933). 



Onychomys leucogaster longipes Merriamf* 



1889. Onychomys longipes Merriam, North Amer. Fauna No. 2, p. 1, Oct. 30, 

 1889. 



1913. Onychomys leucogaster longipes Hollister, Proc. Biol. Soc. Washington, 

 vol. 26, p. 216, Dec. 20, 1913. 



Type Locality. — Concho County, Tex. Range. — Central and southern Texas 

 and Nuevo Leon and Tamaulipas, Mexico. North to Tom Green and Concho 

 Counties, Texas; west to Pecos River; southeast to Rockport and Nueces Bay, 

 Texas; south to Victoria, Tamaulipas. Zonal range, Lower Sonoran. Recorded 

 also from Mustang Island, Tex. (Baker and Lay, Journ. Maram,, vol. 19, No. 4, 

 p. 505, Nov. 14, 1938). 



Onychomys leucogaster breviauritus Hollisterf* 



1913. Onychomys leucogaster breviauritus Hollister, Proc. Biol. Soc. Wash- 

 ington, vol. 26, p. 216, Dec. 20, 1913. 



Type Locality. — Fort Reno, Canadian County, Okla. Range. — Eastern Ne- 

 braska, eastern and south-central Kansas, and western Oklahoma. From Neligh, 

 Nebr., and Fort Riley and Neosho Falls, Kan., west and south to Ellsworth, Ed- 

 wards, and Harper Counties (Hibbard, Trans. Kansas Acad. Sci., vol. 47, p. 77, 

 September 1944), and to Alfalfa and Canadian Counties on east and Woodward 

 and Jackson Counties on west, in western Oklahoma (Blair, Amer. Midi. Nat., 

 vol. 22, No. 1, p. 117, July 1939) . 



Onychomys torridus torridus (Coues)f* 



1874. Hesperomys (Onychomys) torridus Coues, Proc. Acad. Nat. Sci. Phila- 

 delphia, vol. 26, p. 183, Dec. 15, 1874. 

 1884. Hesperomys torridus True, Proc. U. S. Nat. Mus., vol. 7 (App., Circ. 



29), p. 597, Nov. 29, 1884. 

 1889. Onychomys torridus Merriam, North Amer. Fauna No. 2, p. 3, Oct. 30, 



1889. 

 1896. Onychomys torridus arenicola Mearnsf , Preliminary diagnoses of new 

 mammals from the Mexican border of the United States, p. 3, May 25, 1896. 

 (Preprint of Proc. U. S. Nat. Mus., vol. 19, p. 139, Dec. 21, 1896. Rio 

 Grande, about 6 miles above El Paso, El Paso County, Tex.) 

 Type Locality. — Camp Grant, Graham County, Ariz. Range. — From Brews- 

 ter and Presidio Counties in Big Bend region of Texas (Blair, Univ. Michigan 

 Mus. Zool. Misc. Publ. 46, p. 29, June 28, 1940; and Borell and Bryant, Univ. 

 California Publ. Zool., vol. 48, No. 1, p. 28, Aug. 7, 1942) , northwest along Pecos 

 River Valley in Texas to Carlsbad in southeastern New Mexico, and west across 

 southern New Mexico (V. Bailey, North Amer. Fauna No. 53 (December 1931), 



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