Peterson 1935. Perognathus parvus olivaceus July 15. Goose Creek, 5000 ft, 2 mi. Utah Line, ELKO Co., Nevada. One caught canyon slope, gravelly in texture, covered with sage brush + few junipers to N of Goose Creek. July 21. Cobre, 6100 ft, ELKO Co., Nevada. One caught on gently rolling slight slope, gavelly with some sand + covered with sage brush + few junipers. July 24. 6 mi. SW Mountain City, Cobb Creek, 6550 ft, ELKO Co., Nev. Five caught on steep N+ E-facing dry, gravelly slope of Cobb Creek covered with sage brush + grass. Some specimens appeared larger than those taken heretofore. ??? Specimens catched at another place in immediate region. July 25. 6 mi. SW Mountain City, Cobb Creek, 6550 ft, ELKO Co., Nev. Two caught in identical place as per July 24 above. July 27. 1 mi. SE Tuscarora, 5900 ft, ELKO Co., Nevada. Two caught on slightly sloping gravelly terrain with sand area 60 ft. wide + of unknown length.