Mayhew 1958 June 13 Colorado Desert, Calif. the wooden rafters. A large number of bats were found in the cracks. Another bridge was found 2'½ miles west of the previous one (Dripping Springs), which also would be easy to work. Another bridge 5.3 miles west of this one (5'½ miles east of junction of Highways 714 395) could not be worked effectively. (It is exactly 40 miles from this junction to UCR.) We reached UCR at 2:30 P.M. We travelled a total of 722 miles during the 2'½ days we were out in the field. August 1 This morning at 0600 Frank Aubrey + I left UCR for Mt. Baldy, Los Angeles Co., Calif. We reached the ski lifts at the end of the road at 0710. We were following up a report that gravid Sceloporus gracilis had been seen there the week before. This particular area was still in shade at this time, so we dropped down to a lower elevation. We found Sceloporus occidentalis and Vita stanburiana quite common in a stream bed at 4700 feet elevation. However, most of the animals we captured were ♀. Frank caught a young Crotalus viridis in the