Bartholomew 1941 Itinerary Aug 2 W side Colorado R., 500 ft., 6 mi. N. Calif line, Clark Co., Nevada mouse traps in the sand and fine gravel in the bottom of a large wash. I caught 18 ♂ + 13 ♀ Dipodomys merriami, 4 ♀ and 5 ♂ Perognathus formosus and 1 ♂ Perognathus penicillatus (?). After lunch we drove to 3 mi. S W Hicks Springs, 2400 ft., Clark Co., Nevada to look for bats. We camped beside a small trickle of water. I shot no bats, but other members of the group Got a few Pipistrellus. D.H. Johnson, and Ned Stone took the truck out to near Searchlight to look for P. longimembris. Aug 4 At noon yesterday we left camp and drove to 2 mi. E Horman, 3500 ft., Los Angeles Co., Calif. via Victorville. On Aug 3 I set out no traps. Last night I set out 5-8 mouse traps on a grassy hill side and along the side of a small stream. Perhaps because of the strong wind blowing trapping was very poor. I caught only one ♀ Dipodomys gayensis and one ♂ Plecomyopus maniculatus. We are now preparing to leave for Berkeley and do not expect to do any more trapping. We drove to Berkeley up the west side of the San Joaquin Valley via Taft, Coalinga, Los Banos, Tracy and Livermore. We arrived in Berkeley about 5:50 p.m.