birds, owls, flycatcher & several hawks, several rails (which vocalized frequently), and singing zoetrobius. They often sing from perches on tops of 5-foot high cotton plants well out in the fields. Road was paved to acari - a surprise, but poor alone acari. March 26 4 1/2 mi. E. acari, 700ft. Night clear, no mosquitoes. Dew. Trofs caught 4 mice and 2 rats; 1 often in a conspicuous hole in mudbank and 1 drowned in a trap that had been set in an irrigation ditch. They were so big and rat-like that only after much puzzling did I decide they were Oryzomys. Only 2 weeks ago the river had risen many feet and covered much of the bottom below the fields. Drove up the valley in the morning to about 5 miles above Urracote and spent the day in a group of willows now at 1200ft the river. Pure desert on either side of the irrigated strip along the river, but Tallardia high up on the ridges on either side of the valley. Hot. Then drove down the valley to 1 mi E. La Planta de la Mina de Oler acari and set scores of traps along good stone walls at edge of drying old alfalfa, pepper trees etc, abandoned fields, and green tall grass near the river. Night clear. March 27 Trofs held only 1 mouse, 1 Phyllostus dominus, and 1 small Phyllotins still in live trap. The zoetrobius at 4 1/2 mi E. acari were singing "Good morning chick", or occasionally the "chick" had a little roll. The zoetrobia at La Planta had a slight roll. Left for Bella Union thinking to go to