Peterson 1935. of Humboldt River on sand dunes. July 4. Catch included 7 Diptomyia columbiana, 2 Orychomys l. brevicaudus, 3 Eutamias m. scrutator, and 2 Perognathus p. olivaceus. Total = 14. Skins prepared of 3 Orychomys l. brevicaudus, including 1 from Dr. Hall's catch, 1 Eutamias m. scrutator, and 1 Perognathus p. olivaceus. Skulls of previous day's catch cleared, i.e., brains blown out. Pack up after lunch. Leave for Elko, Nevada, arriving within 10 mi. of city about 7:30 P.M., where camp pitched up in hills about 2 mi. N of Humboldt River in a notoriously mosquito-infested country of few small junipers + other small bushes including some [illegible] Artemesia tridentatus. July 5. Leave camp about 6:30 A.M., arrived in Elko 7:10 A.M. Leave Elko about 10 A.M., arrive Death 11:15 where information about roads, country, animals was obtained from a certain Mr. Grock who operates a garage at Death. Proceeded on road toward Twin Falls, Oregon turning eastward into Marys River basin + proceeding up river to Buena Vista ranch, arriving there little after 1 P.M. Conversered with Mr. Hyde the foreman of the ranch who gave us permission to pitch camp on the property. Camp put up on rising piece of ground where mosquitoes were thought not to be so numerous.