412 U. S. NATIONAL MUSEUM BULLETIN 205 



Microdipodops megacephalus anibiguus Hall* 



1941. Microdipodops megacephalus anibiguus Hall, Field Mus. Nat. Hist. Publ. 

 511, Zool. Ser., vol. 27, p. 251, Dec. 8, 1941. 



Type Locality. — One and one-fourth miles north of Sulphur, Humboldt County, 

 Nev. Altitude, 4,050 feet. Range. — Smoke Creek and Black Rock Deserts and 

 lower part of Humboldt River Valley in Nevada and in extreme eastern Cali- 

 fornia; from Quinn River Crossing southwest to Flanigan, south to Humboldt, 

 and east to Golconda. 

 Microdipodops megacephalus medius Hall 



1941. Microdipodops megacephalus niedius Hall, Field Mus. Nat. Hist. Publ. 

 511, Zool. Ser., vol. 27, p. 256, Dec. 8, 1941. 



Type Locality. — Three miles south of Vernon, Pershing County, Nev. Alti- 

 tude, 4,250 feet. Range. — Southwestern Pershing County. 



Microdipodops megacephalus nexus Hall 



1941. Microdipodops megacephalus nexus Hall, Field Mus. Nat. Hist. Publ. 



511, Zool. Ser., vol. 27, p. 257, Dec. 8, 1941. 

 Type Locality. — Three miles south of Izenhood, Lander County, Nev. Range. — 

 From 514 miles northeast of Golconda, Humboldt County, east to Izenhood, 

 Lander County, Nev. 

 Microdipodops megacephalus sahulonis Hall 



1941. Microdipodops, megacephalus sabulonis Hall, Proc. Biol. Soc. Wash- 

 ington, vol. 54, p. 59, May 20, 1941; Field Mus. Nat. Hist. Publ. 511, Zool. 

 Ser., vol. 27, p. 260, Dec. 8, 1941. 

 Type Locality. — Five miles southeast of Kawich Post Office, Kawich Valley, 

 Nye County, Nev. Altitude, 5,400 feet. Range. — South-central Nevada from 

 eastern Esmeralda County eastward across Nye County to western Lincoln County. 



Microdipodops megacephalus albiveuter Hall and Durrant 



1937. Microdipodops pallidus albiventer Hall and Durrant, Journ. Mamm., 



vol. 18, No. 3, p. 357, Aug. 14, 1937. 

 1941. Microdipodops megacephalus albiventer Hall, Field Mus. Nat. Hist. 



Publ. 511, Zool. Ser., vol. 27, p. 263, Dec. 8, 1941. 

 Type Locality. — Desert Valley, 21 miles west of Panaca, Lincoln County, Nev. 

 Altitude, 5,300 feet. Range. — Desert Valley in central Lincoln County (Hall, 

 loc. cit.). 

 Microdipodops megacephalus paululus Hall and Durrant* 



1941. Microdipodops megacephalus paululus Hall and Durrant, Murrelet, 

 vol. 22, No. 1, p. 5, Apr. 30, 1941.— Hall, Field Mus. Nat. Hist. Publ. 511, 

 Zool. Ser., vol. 27, p. 266, Dec. 8, 1941. 

 Type Locality. — Pine Valley, y 2 mile east of headquarters building of Desert 

 Range Experiment Station of U. S. Forest Service, T. 25 S., R. 17 W., sec. 33, 

 Salt Lake Bench Mark, Millard County, Utah. Range.— Western Utah in Pine, 

 White, and Snake Valleys (Hall, loc. cit.). 

 Microdipodops megacephalus leucotis Hall and Durrant 



1941. Microdipodops megacephalus leucotis Hall and Durrant, Murrelet, vol. 

 22, No. 1, p. 6, April 30, 1941.— Hall, Field Mus. Nat. Hist. Publ. 511, 

 Zool Ser., vol. 27, p. 266, Dec. 8, 1941. 



