R. Zweifel April 30, 1952 Journal 41 to such locations in the desert by a need for retreat from the heat, that retreat being provided by deep joint cracks in the granite. Our camp in Jawbone Canyon was at an elevation of about 2500' where the prominent plant in the wide, sandy canyon bottom is an Atriplex. Lancea drops out just below this point. Collected here were Crotalus viridis, Piturphicatonifis deserticola, Alla stonburnans stignegi, Salozona magister, Hyla regilla and Bufo bras. Gemelia waligoni and Xantusia vigilis were also seen. The amphithe were in muddy pools by the temporary streams in the wide canyon bottom. The Xantusia was under a piece of paper beneath an Atriplex. There are no tree yuccas near here, and very few other yuccas. We tried right driving the road in Red Rock Canyon and the road to Randolburg, but turned up only one badly mangled sidewinder, and quit after about 2 hours. May 1, 1952 We broke camp late in the morning and drove to Mojave, and from there up Tehachapi Pass and into Camoron Valley. There is a road by Oak Creek, but we were stopped by a locked gate. We went over Oak Crea