R. Zweifel July 5, 1951 Pituophis catenifer amestena Hagen Creek, Cuyamaca Rancho State Park, San Diego Co., Calif. 1519 R. Zweifel Found at 8:30 AM (OST) stretched out in full sun on my slightly moist mud in the canyon bottom, BT 29.2°C, air¹ 268, surface 25.4°C. The hillside at this point are covered with chamise. Here is a good illustration of the fact that an ectotherm's temperature is not necessarily the same as that of its "environment". Paso Recio Camp, Cuyamaca Rancho State Park, San Diego Co. July 9, 1951 One of the campers killed an adult Pituophis in her camp at 10:00 PM. She said it was drinking from a pool by the faucet.