Hoffmeister 1942 Itinerary May 21 Walker Cr., 4 mi. SW Olancha, 5200 ft, Inyo Co., Calif. association of Artemisia and Chrysothamnus. Caught 9 Peromyscus maniculatus and 1 P. boylii (and the tip of the tail of a Perognathus). Pitelka had caught 2 Perognathus and 2 Dipodomys in the same association and vicinity the day before. When I ran my trap line at 6:45/5:45 standard time), 4 of the P. maniculatus were still alive, although squarely caught across the back. The sun had been up for fully a 1/2 hour. 35 traps left set from the day before along the west side of Walker Creek caught 2 Perognathus and 3 Peromyscus boylii; 3 Schuyler traps caught Nestoma fuscipes. Broke camp at about 11 a.m. A list of birds seen at this locality or within a 4 mi. radius of it, in similar habitat, includes: Falco mexicanus Sophortyx californica Oreortyx paria Otus asio Asio wilsonianus Chalceoptilus nuttalli Aeronautes saxatilis Calypso costae Stellula calliope Megaceryle alcyon Myiarchus cinereascens Empidornax sp? Nuttallornis mesoleucus Tachycineta thalassina Hirundo erythrogaster Cyanocitta stelleri Aphebecoma californica Corvus corax Cyanoccephalus cyanoccephalus Baeolophus inornatus Psaltirparis minimus Thryomanes bewicki Catherpes mexicanus Salpinctes obsoletus Turdus migratorius Hylocichla guttata * Hylocichla ustilata * Polioptila caerulea Corthylis calendula *Lanius ludovicianus Vireo solitarius " gilvus * Vermivora celata Dendroica auduboni * " nigrescens * " townsendi * Spornistolmice Wilsonia puella Sturnella neglecta