RODENTIA: CRICETIDAE 515 



Nov. 11, 1931) ; throughout Upper Sonoran Zone of Nevada north of about 

 lat. 37° N. except northern Washoe County (Hall, Mammals of Nevada, p. 493, 

 July 1, 1946) ; and extreme eastern border of California, within edge of Great 

 Basin; recorded from Amedee, Lassen County, south to Benton and Long Valley, 

 Mono County; vertical range, from 4,000 feet (Amedee, near Honey Lake) up 

 to 6,900 feet (Farrington Ranch, near Mono Lake) ; zonal range, characteris- 

 tically Upper Sonoran, but also Transition locally (Grinnell, Univ. California 

 Publ. Zool., vol. 40, No, 2, p. 167, Sept. 26, 1933) . 



Onychomys leucogaster utahensis Goldmanf* 



1939. Onychomys leucogaster utahensis Goldman, Journ. Mamm., vol. 20, 

 No. 3, p. 354, Aug. 14, 1939. 



Type Locality. — South end of Stansbury Island, Great Salt Lake, Tooele County, 

 Utah. Altitude, 4,250 feet. Range. — Western Utah, approximately the area 

 formerly occupied by Pleistocene Lake Bonneville (Durrant, Univ. Kansas Publ. 

 Mus. Nat. Hist., vol. 6, p. 324, Aug. 10, 1952) . 



Onychomys leucogaster aldousi Goldmanf* 



1942. Onychomys leucogaster aldousi Goldman, Proc. Biol. Soc. Washington, 



vol. 55, p. 77, June 25, 1942. (Regarded as identical with utahensis by 



Durrant, Univ. Kansas Publ. Mus. Nat. Hist., vol. 6, p. 324, Aug. 10, 1952.) 



Type Locality. — Desert Range Experiment Station, 50 miles west of Milford, 



Beaver County, Utah. Range. — Known only from type locality, but may have an 



extensive range in desert region of southwestern Utah and adjoining territory in 



Nevada. 



Onychomys leucogaster fuscogriseus Anthony* 



1913. Onychomys leucogaster fuscogriseus Anthony, Bull. Amer. Mus. Nat. 

 Hist., vol. 32, p. 11, Mar. 7, 1913. 



Type Locality. — Ironside, Malheur County, Oreg. Altitude, 4,000 feet. 

 Range. — Eastern Washington and Oregon, southwestern Idaho, and northeastern 

 California. Columbian Plateau in southeastern Washington, and Yakima Valley 

 north to Douglas, west to Yakima, east to Asotin, and south to Wallula (Dalquest, 

 Univ. Kansas Publ. Mus. Nat. Hist., vol. 2, p. 323, Apr. 9, 1948) ; arid Upper 

 Sonoran sagebrush plains of eastern Oregon (V. Bailey, North Amer. Fauna 

 No. 55 (June), p. 178, Aug. 29, 1936) ; in southwestern Idaho recorded at Weiser 

 in Washington County and at Nampa in Canyon County (Davis, The Recent mam- 

 mals of Idaho, p. 278, Apr. 5, 1939) ; northern Washoe County in northwestern 

 Nevada (Hall, Mammals of Nevada, p. 493, July 1, 1946) ; and valleys of 

 extreme northeastern California; recorded west to Picard, near Lower Klamath 

 Lake, Siskiyou County, and south to Box Springs, on Madeline Plains, at north 

 base of Observation Peak, Lassen County; vertical range, from 4,150 feet (near 

 Tule Lake) up to 5,300 feet (on Madeline Plains) ; zonal range, Upper Sonoran 

 (Grinnell, Univ. California Publ. Zool., vol. 40, No. 2, p. 167, Sept. 26, 1933). 



Onychomys leucogaster melanophrys Merriamf* 



1889. Onychomys leucogaster melanophrys Merriam, North Amer. Fauna No. 

 2, p. 2, Oct. 30, 1889. 



