Jun 1931 Madro Valley, 21 mi. S Caliente, 3200 ft. Luzida Co., Nev. June 16, 1931 #219 Oryzomys torridus - ♂ wt. 23.4 g. 145-49-21-18 #220 " " " - ♀ wt. 19.2 g. 134-48-26-18 #221 " " " - ♀ wt. 22.9 g. 140-47-20-18 #222 " " " - ♀ wt. 24.4 g. 145-51-26-18 #223 Dipodomys merriami - ♂ wt. 42.5g 224-140-37-14.5 #224 " " " - ♀ wt. 39.9g. 250-146-39-14 #225 Neacomys javanintinus - ♂ wt. 6.8g. 135-75-18-7 #226 Rattus intermedius - ♂ 271-118-18-28 Traps contained 10 Dipodomys merriami, 1 Rattus intermedius, 4 Oryzomys torridus, and 1 Neacomys javanint- mus. The Oryzomys were caught in the sandy areas. The Rattus was caught quite far away from anything but small brush. It was captured in a mouse trap. The traps had been dragged 50 feet from the spot where it was set. Three mounds of Dipodomys deserti were found last night and I set traps around them, but this morning all the traps were springing and empty. My plans about the traps their tracks were numerous and the sand had been shoved up.