Peterson 1935. fence with tall sage brush, as well as in a dry ditch in a meadow. July 7. Catch included one Dipodomys o. columbianus and 11 Peromyscus m. sonoriensis. Skins prepared of the Dipodomys and of 2 Microdipodops megacephalus caught by Mr. Baldwin. Four 19 mm. embryos taken from the Dipodomys & preserved in Borin's fluid. Five 30 mm. embryos from a Dipodomys prepared by Mr. Richardson also preserved in Borin's fluid. Porcupine skin rolled up for transportation- Pack up to leave for NE corner of State of Nevada via Death, Wells, Contact & San Jacinto. Arrived at a place some 75 mi. # of Wells 6:30 P.M. where camp pitched for night. About 60 mouse traps set in dry slope, flat & sandy areas covered with sage brush. 15 mi. S Contact, 5800ft., ELKO Co., Nevada. July 10. Catch included one Microdipodops megacephalus, 5 Dipodomys o. columbianus, .5 Eutamias m. scutatus and 9 Peromyscus m. sonoriensis. Got also one hind foot of another Microdipodops. Animals wrapped in oiled paper + wet gunny sack. Pack up & proceeded N on U.S. 93 thru Contact & San Jacinto to Goose Creek ranch 2 mi. W Utah State Line, ELKO Co., Nevada.