Keane, D. 1985 18 April Ridge Lava Flow, San Bernardino C., California Claudia Juke, Jeff Kauffman, and I arrived here (trailers) at 0100hr, having left Berkeley at 1430 yesterday. Some rain on the way down and during the night here, chilly, at times very windy. Found a skinny adult Crotalus cerastes motionless in the middle of National Trails Hwy at 0008 hr, 2.5 mi E. of Newberry Springs. Didn't expect a snake so late and cold! Overcast, cool, and windy all morning (we slept late, then parked in another level from the car, >1/2 mile away). By 1230 clouds breaking up from the west and getting warmer. I walked from then until 1345, during which there was some bright sun and occasional drizzle. At 1306 hr I found an adult Crotalus mitchelli coiled at the edge of lava and hardpan slope, S. of the trails on the S. edge of the finger that goes W and at its base. Snake turned into a hole in the lava and rattled and coiled when I hooked it out. Saw much old Sauromalus scuts and some Uta Webberi, but no active lizards. Jeff and Claudia walked out to the car - they saw 2 Uta and collected scuts of Canis, Lynx, and Vulpes. We clipped the snake's last vertebra, weighed (434 g), measured (815+60mm, ?), and palpated out a Webberi that had been swallowed head-first. After late lunch we walked from 1530-1800. I saw only Uta,