Smiley 1936 Microdipodops sp. (Cont.) 3 mi. N Vya, 5900 ft., Washoe Co., Nev. July 20 Two specimens. Terrain flat; wind-blowable sand brown, drifted under bushes (Artemesia). Latter, up to five feet in height. Dunes under bushes ± one foot in depth. July 21 ½ mi. NE Painted Point, 5800 ft., Washoe Co., Nev. 10 caught in area of light tan wind-blowable Sand mottled over area of hard-packed silt. 3 mi. E Painted Point, 5800 ft., Washoe Co., Nev. 6 caught. Artemesia on coarse, brown sand, not wind-blowable. Terrain flat. July 25 9½ mi. N Sulphur, 4050 ft., Humboldt Co., Nev. 4 caught on dune area of semi-wind- blowable sand – dunes inconspicuous up to two feet high. * Sand brownish with vari. colored pebbles less than 2 mm. in diameter scattered over surface. 1½ mi. N Sulphur, 4050 ft., Humboldt Co., Nev. 7 caught on dune structure 15'x100'x600' of light tan windblowable sand adjacent to similar dunes (massive) Plants: Sarcobatus, Artemesia.