P. PEARSON 1950 July 2 Temp. at about 5:45 a.m. was 19°? This felt like the coldest yet. Nothing in traps... 78 trap nights here so far with nothing. Day with scattered clouds, about half sunny half cloudy. Temp. at noon 29°. Looked in some more culverts and got 3 more bats, 3105-3107. Each of these was alone in its own culvert, even the late pregnant one. If chased out of a culvert they frequently hang up in a nearby bush. Some of the culverts are corrugated iron pipes and some are made with dry stone walls with timbered ceilings, about 2 feet by 2 feet. They sometimes go into cracks in these latter. Also present in the latter stone + timber culverts wasps, small brown lizards, and numerous snake skins. The 3 red bats shot at 8:30 last night were too stinking by breakfast to eat. Henson left for Meina to pick up Smith. July 3 Light rain beginning at 4:15 a.m. Stopped about 7, then more later in morning, total ½ inch. No sun up to 1 p.m., temp. 24°? Nothing in traps. No sun in afternoon either. Henson arrived with Smith before dinner. July 4 Nothing in traps. With no prospects for more specimens, went to boulder with Davey + Henson and sifted for rodent teeth. Temp. at noon (overcast) 26°. Humid. 60%. All morning cloudy, afternoon mostly sunny. Moved traps to a dry wash running through a field of tall grass (7ft.) and weeds. Lots of corn mice tracks in the sand in the wash.