Verdrickson 1950 Journal Aug 24 Lower Covington Flat, 5000 ft., Riverside, Calif. in wash behind (S.) camp. Traps were undisturbed. At 10:30 A.M. took Sceloporus occidentalis in this wash. Cloacal temp. = 37.1; shade temp. where shot = 31.8. Returned to camp and prepared specimens till about 4:00 P.M., then went out with Ward to place rabbit bait near steel traps. Returned and worked on snake trap until suppertime. Aug. 25 Started out at 6:00 A.M. to search tunnel wash in 2nd canyon S. of camp for lizards and bats. Found none. Worked into 1st canyon S. of camp and walked up it toward Upper Covington Flat. At 7:45 shot Cnemidophorus; cloacal temp. = 40.5°C., soil substrate = 33°C. At 7:50 shot Sceloporus magister; cloacal temp. = 32°C., rock = 29.2°C. At 8:10 shot Sceloporus occidentalis; cloacal temp. = 31.0; rock (shade) = 27.4°C., rock in sun = 37.5°C. At 8:12 shot Cnemid- ophorus; cloacal temp. = 39.8°C., leaf litter = 43.6°C. At 9:00 climbed canyon through area where it crosses bed rock granite, with water-warm slides. * Covington Springs