May 16 Mojave Desert, San Bernardino Co., Calif. Along the road north of Lucerne Dry Lake we caught one Callisaurus draconoides and 2 Siphonops agassizi (9 miles N. of Lucerne Valley). We camped for the night along a dirt road that was west of the Lucerne Valley- Barstow Road. We were 6.1 miles S. of Barstow where the dirt road left the pavement, then 1.2 miles S.W. on Stoddard Well Road. At this site we saw or caught the following animals: Siphonops agassizi Callisaurus draconoides Crotaphytus collaris Sauromalus obesus Phrynosoma platyrhinos Cnemidophorus tigris Crotaphytus wislizeni Citellus leucurus Rock wren Horned lark Western tanager Phainopepla 4 Siphonops agassizi were taken from UCR, marked, and released near our camp, and about 45 feet east of a U.S. Geological Survey bench mark (73LC, 1952, 2601 feet above sea level). Another tortoise was caught at camp and released with the other 4. These were released about 8 P.M. All but the smallest one (No. 3) were still in the same location when checked for the last time at 1:45 A.M. 5/17/58. after dark Ruibal took one car - load night collecting and I took