Erickson, 1933 1934 Salpinctes obsoletus obsoletus Chino Canon, Palm Springs, Riverside Co., Calif. Dec. 30, 1933 A single individual seen and heard on rocky east wall of canyon. West base of Castle Dome, Yuma Co., Arizona. Jan. 10, 1934 A single individual seen on side of one of small rocky hills at base of dome; no call noted heard during 5 mins. observed. Tunajas Altas, Yuma Co., Arizona Jan. 15, 1934 An individual flushed from near or in a small cave in side of steep draw above tanks, about 1400 ft. flew to opposite side = 12 ft. into rock tunnel, out onto a rock and out of sight scolding as event; heard a few minutes later on rocks above those from which it was flushed. Tunajas Altas. Jan. 17, 1934 One calling from rocks 20 ft above lower tank just at dusk; continued to call for a minute or more shifting position on rock twice; then went out of sight, a more plaintive contented chip heard from this general direction. A bat flying over water at this same time. This species has been heard frequently during days spent at this camp. Tule Tank, 1250 ft., Yuma Co., Ariz. Jan. 18, 1934. One seen on plain at mouth of canyon; foraging on ground moved by hopping; went up into some bush in which Roy Shobe was perched; as shot at; it flew off toward hill; but stopped short of them; lost.