RODENTIA: GEOMYIDAE 295 



Type Locality, — Beaverdam Creek, near confluence with Virgin River, at Lit- 

 tlefield [ = Beaverdam], Mohave County, northwestern Arizona. Altitude, 1,500 

 feet. Range. — Virgin River Valley, below canyon traversed by river in breaking 

 across fault line marked by Beaverdam Mountains on one side and Grand Wash 

 Cliffs on the other, in Mohave County; east of Virgin Valley in extremely arid 

 section near Pakoon Spring, along Grand Wash (Goldman, North Amer. Fauna 

 No. 59, p. 7, June 12, 1947) ; Virgin River Valley in southeastern Nevada (Hall, 

 Mammals of Nevada, p. 473, July 1, 1946) ; and extreme southwestern Utah, in 

 Beaverdam Wash, Washington County, Utah (Durrant, Univ. Kansas Publ. Mus. 

 Nat. Hist., vol. 1, No. 1, p. 64, Aug. 15, 1946) . 



Thomomys bottae nicholi Goldmanf* 



1938. Thomomys bottae nicholi Goldman, Journ. Washington Acad. Sci., vol. 



28, No. 7, p. 337, July 15, 1938. (Regarded as identical with trumbullensis 



by Durrant, Univ. Kansas Publ. Mus. Nat. Hist, vol. 1, No. 1, p. 70, Aug. 



15, 1946.) 



Type Locality. — Twenty miles south of Wolf Hole (on road to Parashonts), 



Shivwits Plateau, Mohave County, Ariz. Altitude, 5,000 feet. Range. — Shivwits 



Plateau region, on terrace between Hurricane Ledge on east and Grand Wash 



Cliffs on west, north of Grand Canyon, Mohave County, northwestern Arizona 



(Goldman, North Amer. Fauna No. 59, p. 7, June 12, 1947) . Zonal range, Upper 



and Lower Sonoran ; vertical range, 4,500 to 5,000 feet. 



Thomomys bottae trumbullensis Hall and Davis* 



1934. Thomomys bottae trumbullensis Hall and Davis, Proc. Biol. Soc. Wash- 

 ington, vol. 47, p. 51, Feb. 9, 1934. 



Type Locality. — Three miles south of Nixon Spring, Mount Trumbull, Mohave 

 County, Ariz. Altitude, 6,500 feet. Range. — Lava and cinder area centered 

 about Mount Trumbull on plateau near north rim of Grand Canyon, Ariz. (Gold- 

 man, North Amer. Fauna No. 59, p. 9, June 12, 1947). Zonal range, Upper 

 Sonoran and Transition ; vertical range, 6,000 to 7,000 feet. 



Thomomys bottae fulvus ( Woodhouse) f * 



1852. Geomys fulvus Woodhouse, Proc. Acad. Nat. Sci. Philadelphia, vol. 6 



(1852-1853), p. 201. 

 1858. Thomomys fulvus Baird, Mammals, in Rep. Expl. Surv. Railr. to Pacific, 



vol. 8, pt. 1 (Washington, 1857), p. 402, July 14, 1858. 

 1932. Thomomys bottae nasutus Hall, Proc. Biol. Soc. Washington, vol. 45, 

 p. 96, June 21, 1932. (Type locality, west fork of Black River, Apache 

 County, Ariz. ; altitude, 7,550 feet. For status see Goldman, Proc. Biol. Soc. 

 Washington, vol. 48, p. 156, Oct. 31, 1935.) 

 1932. T[homomys] b[ottae[ fulvus Hall, Proc. Biol. Soc. Washington, vol. 45, 



p. 96, June 21, 1932. 

 Type Locality. — San Francisco Mountain, Coconino County, Ariz. Range. — 

 In Arizona, the whole of elevated Coconino and Mogollon Plateau regions, ex- 

 tending from southern rim of Grand Canyon southeastward to White Mountains, 

 Apache County; a spur from main range reaches south through high country to 

 Bradshaw Mountains west of Verde River Valley, Yavapai County; zonal range, 

 mainly Transition above 5,000 feet, but in Canadian on San Francisco and White 

 Mountains (Goldman, North Amer. Fauna No. 59, p. 13, June 12, 1947) ; extends 



