44 Littleland 1933 Perognathus nevadensis Hot Creek valley, 6 1/2 mi. N Hot Creek 5900 ft. Nye Co., Nev. July 18 Nine specimens taken. Here P. nevadensis outnumbered by far all other species. Vegetation low and foliage poor. Soil gravelly and rather hard. Slope gently to E. Hot Creek valley 4 mi. N Hot Creek, 5900 ft., Nye Co., Nev. July 18 Four specimens taken. Location nearer creek - soil in spots a bit lighter than preceding locality. N End Reveille Valley, Old Mill, 6200 ft. Nye Co., Nev. July 22. One specimen taken. Soil rather sandy Railroad valley, 9 1/2 mi. E New Reveille, 5200 ft., Nye Co., Nev. July 25 Took 2 species. Sandy knolls on N side of dry alkali lake - Chrysothamnus and Atriplex covered knolls