smiley 1936 Peromyscus maniculatus July 2 N side Truckee R., 4900 ft., ½ mi. W. Verdi, Washoe Co., Nev. Three taken on 45° slope, 30 feet above and 30 feet back from river near break of bank under the exposed roots of trees and near rocks. Large cottonwoods (40 ft. ±) overhead, plus few ponderosa pine. Underbrush of cottonwood, elderberry, and wild rose. July 4 4 mi. NW Flanigan, 4200 ft., Washoe Co., Nev. Seven specimens in sand dune area. Fine, wind-blown Sand grayish in color. Dunes up to six feet high. Vegetation quite abundant. Sarcobatus a predominant plant. Terrain on each side of dune belt flat with much Artemesia. Belt of dunes 100 to 200 feet wide and ¼ mi. long. Some burrows of Dipodomys open. Smaller burrows of mice closed. Burrowing mostly in accumulation of sand under bushes. July 5 N side Sand Pass, 1350 ft., Washoe Co., Nev. Area of wind-blown sand and silt from dry lake ½ mile down slope. Dune structure slight. Drifted around base of plants. A sturdy-stemmed Poraxela legumen with tiny purple flowers a conspicuous plant.