P. PEARSON 1949 53 looked in old houses etc for the missing corvid bats. Two especially good ones: one 1+ mi. n. of Hot Cee P.O. the other just NE of Murdoachie had no bats. Then drove to the old flour Mill at Glenburn, but no bats. Then left Rivers Station at 6 p.m. Mined two more chalk tunnel, and 1 corv and 1 m. yuma in the other. Also 1 other corv that squealed. Several good old house nearby, but nothing night roosting (or day) up through 10 p.m. Moths flying at 45%. Temp. 46° at 10 p.m. April 9 No more bats in the 3 tunnels in chalk. Temp. at 6 a.m. 34°. Pump in the Cory tunnel in chalk 57°. Also no bats in the deserted houses etc. Then drove toward Burns on Rt. 299, left to Casel, rt to Lassen Rd., thence to Burns. Best bat roost was old creamery & house along river, south of Casel. Many droppings in refrigerated room in the creamery and much evidence of night roosting in the houses. 2 Very good athus in house but not [illegible] many droppings: many droppings in warehouse on east side of road at Maysville. April 12 left for Inverness 3:45 p.m. with ants & bats. One male corynothine on beam in cellar of Meriposa Pavilion in Lagunitas. Arrived Golden's barn about 6 p.m. Tadarida gurus, Myotia ? yuma under board on stair landing (about 6) and about a dozen Cory in attic rather wakeful. Caught 3 of them and 1 more later in four [illegible] better room. This one probably disturbed from athus. Also caught and