Hoffmeister 1939 Peromyscus truei June 29 Crooked R., 3400 ft. at mouth of Bear Cr, Crook Co, Oregon Last night, I set traps in habitats I thought most suitable to catch this species. The locality was the hills behind camp which are covered with basaltic rocks of varying size and a sparse growth of Juniperus occidentalis. I set traps at the base of junipers and among rocks. The only specimen I got was in a small ravine among some small basaltic rocks and was at least 20 feet from junipers. There was no cover around except for rocks where this specimen was caught. June 30 Crooked R., 3100 ft. 4 mi. W mouth of Bear Cr, Crook Co., Oregon Set traps along the basaltic slides that line the stream banks along this gorge at this point, and also set fewer traps closer to the stream where a few junipers grow along the dry bordering stream bed. Caught one of this species in three traps set in the junipers along the stream. Johnson also set traps only along the basaltic slides and caught no Peromyscus truei. Apparently, they are not found at the base of these basaltic outcrops where they occur extensively, but on sandy areas with a few junipers and two but larger basaltic boulders.