Arndt, Steve 1963 JOURNAL April 10 15 miles E. of San Luis, Sonora, Mexico under a creosote bush. Crossed Mexico-Arizona border at San Luis. Stopped in San Luis', Yumas Co., California Arizona near an irrigation channel to look for Thamnophis - Uta stansburiana taken. Crossed Arizona-California border at Yuma, Yuma Co., Arizona. Stopped about 25 mi. E of Calxico, Imperial Co., California -- reddish-brown soil -- flat plain-creosotes more green and more abundant than in Sonora -- lizard tracks (Cnemidophorus or perhaps Dipsosaurus) but no specimens seen. Drove north up the east side of the Salton Sea. Reached Desert Hot Springs, Riverside Co., California about 7:30PM. Strong wind - Dipodomys active - no reptiles on road. Checked traps in Whitewater Canyon, Riverside Co, -Uta stansburiana, Bufo punctatus. Slept near the Fish Hatchery. April 11 Drove to Cabazon, Riverside Co., California. Mouse, scorpions and Uts under surface litter 1 mi. S.E. of Cabazon. 1 1/2 miles E.S.E. of Cabazon, base of San Jacinto Mtns., 1 Emmeces and Uta weaveri found in traps. Sceloporus orcutti, Callisaurus and Hyla trenicolor sighted. Uta stansburiana taken in traps 1 mi. S.E. of Cabazon. Boys hunting in the dunes