athfield - 1934 500+ ft., Colorado R., 1/4 mi. SE Searchlight, Clark Co., Nev. 303 January 9, 1934 Set out 100 traps in the evening. 50 of these were set in very dense arrowweed, so dense that it was often necessary to crawl on hands and knees to progress. The other 50 traps were set in more open sandy country, often overgrown with dry grass, but always with arrow- weed the dominant plant. January 10, 1934. Caught in traps - 2 Dipodomys 1 Reithrodontomys 4 Peromyscus 5 P. eremicus monoculatus 1 P. boylii The Reithrodontomys was caught in a grassy, fairly open area surrounded by large clumps of arrow- weed and mesquite. In the morning, shot a male and female Phainsopepla viteros. This species seems to be localized in a very definite area just 1/2 mile north of camp. There there is an open, sparsely overgrown area which is of some what higher elevation than the sur- rounding territory, and these birds seem to