Lee Arnold 1937 Dipodomys ordii (micrope?) May 26 Warm Spring, Lassen Co., Calif. Four caught 4 1/2 miles NW of here yesterday by me. Fitch & Johnson have both caught several in similar sandy more or less open places. They seem to inhabit crecs where the brush is not as thick as that inhabited by Dipodomys merriami. May 22 Two caught in trepline running out on the floor of the desert east of camp. They were on soft ground - siltlike. They seem to like the soft dry silty soil to rollin. Their tracks and tailmarks are plainly visible in such places. May 30 4 mi. NW Pahrump Pk., Washoe Co., Nevada: Three caught in the scattered brushland on the eastern side of Smoke Creek Desert. The spots where they were caught were for the most part soft silt-like dusty plots May 31 Fox Canyon, 4mi. S Pahrump Pk, Washoe Co., Nevada. Four caught on rolling hills just west of camp. One of those was caught at the mouth of a burrow which was situated on 2 low mound of bare earth. There were eight or ten burrows into this single mound about 13 ft in diameter. Three other traps set on the mound were unshurbed. The other three were caught under the edges of bushes away from holes. These were apparently foraging over the hard baked ground.