Mayhew 1961 Journal 83. Sept. 22 UCR, Riverside Co., Calif. and ?? are involved. I am trying to bring them into breeding condition during the winter. 10 U. inornata (2 ?, 8 ?), 14 U. notata (4 ?, 10 ?), and 15 U. scoparia are involved (6 ?, 9 ? U. scoparia). Case #3 contains 11 juvenile Dipsoceana loralia, 4 young Uma inornata, 11 Uma notata, and 10 Uma scoparia. These are control animals for a growth experiment involving light. Cage #5 contains 12 young Dipsoceana loralis, 4 Uma inornata, 11 Uma notata, and 10 Uma scoparia. These are the experimental animals. Cage #3 will receive 11 hours of light per day, as in the past. Cage #5 will receive 24 hours of light per day, beginning today. The other 2 cages (#1 and 2) contain Phrynosoma mi calli for a hibernation experiment, as mentioned earlier. Each of the indoor cages will have one 250-watt infra-red lamp shining at each end of the cage (except cage #1, which will have no lights on after October). On February 15th, I plan to again turn on the lights in cage #1 (one 250-watt lamp at each end).