Ludlow, 1712', San Bernardino Co., Calif. Dec. 21. Creosote bushes. Car was repaired at noon, and we proceeded to a point 25 mi. s. of Needles, +75', San Bernardino Co., Calif. Dec. 21. Made camp at the base of a small chain of low rocky hills, skirted by several dry washes. Plants noted: - Creosote bush, Frangaria dumosa, Eriogonum inflatum, [illegible] dapper, Yucca schidigera, barrel cactus, deerhorn cactus, a species of cholla (Opuntia sp.), beavertail cactus, and Encelia sp. Lots of sign but most of it old. Woodrat and rabbit drop- pings were noted. A few ground squirrel holes seen, but they were old. Ran a trap line up a dry wash and up on the side of a rocky hill with numerous stands of ocotillo (Fourqueria splendens). Set some traps at the bases of ocotillo bushes, as each bush had burrows beneath it. No birds seen, but a few lizards. The weather here is much warmer than at Lud- low. Clear no wind all day. Ran a few traps at 8:00 p. m. and found 1 Dipodomys deserti; Dec. 22. Sibley, Chaitin and I tore apart woodrat nests in a.m., securing 6 animals. All the nests were at the bases of cholla, and were covered by the falling joints of the cacti. They offered extremely good pro- tection. Nearly every nest contained large stores of