Bartholomew 1941 Microtus longicaudus July 22 3 mi. S Mt. Rose, 8500 ft., Washoe Co., Nevada Two (numbers 53 & 54) were caught in traps ten feet apart. Both were placed in short green grass about a foot from the edge of a swiftly flowing stream about four feet wide and 8 to 10 inches deep. Traps were both placed beneath elder berry bushes. The trap between the two which caught the Microtus caught a Sorex palustris. July 23. A single specimen (56) was caught in a trap set on top of moist sand a yard below an overhanging rock which was situated in the midst of a moist almost marshy meadow covered with sedge, grass, Yerathrum, and elder berry. 9 other traps were set out in same site, but only P. maniculatus were caught. July 27: Middle Cr., 8000 ft., White Mts., Esmeralda Co., Nevada While hunting for deer I crossed Middle Creek and in a thicket of gooseberry underneath some Betula fontanella I saw a M. longicaudus climbing in the gooseberry brush about 3 feet from the ground (time 8:30 a.m). I backed up and shot him. My presence and my movements seemed not to frighten him.