Mayhew 1960 Journal 51. June 12 Colorado Desert, Riverside Co., Calif. none have been seen this spring in area where they have been numerous before. Apparently last year's drought reduced even the adult population. Almost no young animals have been seen this year. Animals caught today were: Urosaurus graciosa - 1 (♀) Diposaurus dorsalis - 6 (2 ♂, 4 ♀) Uma inornata - 11 (9 ♂, 2 ♀) Cnemidophorus tigris - 1 (♀) Total 19 Diposaurus dorsalis are extremely abundant this spring, particularly in the Palm Springs area. We passed up at least 50 this morning that we saw and ignored. They are just about everywhere. When we returned to UCR we found that 19 animals were dead and 1 was injured: Uma notata - 3 (1 ♂, 2 ♀) Uma scoparia - 7 (6 ♂, 1 ♀) Coleonyx variegatus - 1 (♂) Urosaurus graciosa - 1 (♀) Diposaurus dorsalis - 7 (4 ♂, 3 ♀) Total 19 One Diposaurus dorsalis was injured. The 3 Uma notata + 1 Urosaurus graciosa had to be thrown away because of this condition, but the rest were in good enough condition to be saved.