Page (Four) Journal Sept. 28 Field trip of 135 (systematic mammology) to Sagehen Creek Wildlife and Fisheries Research Station of U.Calif. at Sagehen Creek, 3 mi N.W. of Hobart Mills, ele 6400ft., Nevada Co., Calif. Arrived at 4 P.M. Dr. Seth Benes in charge, Victor Seavin F.A. 2 peanut butter bits 45 traps (Museum specials) put out at 10 PM. Line ran from dirt road S across Sagehen Creek to open sage area beyond woods with scattered rocks. The first nine traps were located on area slope covered with sage (Artemisia sp.), and scattered Ponderosa Pine (Pinus ponder- osa). The next 9 traps were placed on stream bottom characterized by grass with scattered willow bushes (Salix sp.) and Ponderosa Pine. 6 traps were placed along the stream or stoney beach overhung by willow bushes. 17 traps (south of the stream) were in an open stand of Lodgepole Pine (Pinus contorta). The last 4 traps were in open area sparsely covered by sage (Artemisia sp.). One Osprey sunover Baca Reservoir Nevada Co., Calif. Sept 29 A check of the above mentioned trap line produced 9 Peromyscus maniculatus (5 prepared nos 125-127) and 1 Microtus longicaudus (no. 128). 3 P. maniculatus were taken on rocky slope, two in traps in meadow near the rocky slope and 4 were taken across in stand of Lodgepole Pine. A check at 10 A.M. produced 1 Eutamias amoenus from Lodgepole Pine. (no. 129) (no.s 140 and 141) a check at 5:30PM produced 2 Eutamias a moenus, one from rocky slope and one from lodgepole pine. Also one Eutamias speciosa (20132) from Lodgepole Pines. about 50 ft above at 9:30AM. 4 Macabee traps were set. 2 in dry meadow North of stream 2 south of stream in moist meadow (within 20ft of stream in very fresh diggings of Thomomys. One Thomomys monticola (no 131) was taken when traps were checked at 5:30 P.M. It was in the traps south of the stream.