Mayhew 1960 Journal 39. May 15 Idyllwild Area, Riverside Co., Calif. children in the area, so no traps had to be checked this morning. 7 of rolled in early, so we left the park at 0845 + drove to Marion Mt. camp- ground. We hiked up the trail toward the top of Marion Mt. about one mile, looking for birds + Sceloporus gracilis. On the way back to the cars we found 3 Crotalus viridis within 10 feet of each other on a rocky outcrop near the trail. We captured the largest one (4'6"½") for the student collection, but the other two escaped in the rocks. The large one was in sight over 1/2 hour, however, because it took me that long to make a round trip to the car for the snake collecting equipment. We hadn't carried the gear along because we thought it was too cold for rattles to be active yet. When they were sighted at 1130, air temp. (30") was 9.5°C., air temp. (1cm) was 16°C., rock surface temp. was 32°C. We returned to the cars, ate lunch, then started for UCR 1330. We reached UCR at 1445, after driving 66 miles today, + 203 miles on the entire trip.