M. Stone 1947 July 29 3½ mi C and 1 mi S Grapevine Pk., 6,700 ft., Nye Co., Nev. G. Bartholomew is hunting roe & D. Johnson has gone up to spend the night at the spring. Aug. 1 west side Colorado R., 500 ft., 6 mi. N Calif. line, Clark Co., Nev. We left the above locality by about 9:30 AM driving via Beatty, Indian Spd., Las Vegas, Searchlight to 9 mi. 20 + 5½ mi S Searchlight, 4,300 ft., Clark Co., Nev. The terrain was flat at our camp with hills several 100 yds. to the W. The soil except in the washes was gravelly. The most noticeable plants were Yucca brevifolia, Yucca mohavensis, Opuntia sp?, Cholla sp?, several unidentified shrubs & small clumps of grass. In the washes were Mesquite, Catclaw also. I set out 80 traps mostly along the edge of a wash. I caught Dipodomys merriami 13♀ 5♂ 2? " mohavensis 8♀ 6♂ Peromyscus maniculatus 4♀ 1♂ " creticus 1♂ Onychomys torridus 1♂ Perognathus formosus 1♂ total 42 mice / 80 traps. We left camp by noon & reached our present camp via Searchlight, crossing into Calif. & back into Nev. by the "old gov't road." W. Dalquest & D. Johnson drove to White Sprs. for bats but were unsuccessful, and G. Bartholomew & I put out