E.V. Miller 1940 Myotis velifer April 10 Chaco Escendido, 20+ mi. S Reynosa, Tamaulipas. On the east side of this town are several old wells, mostly dry. In each of these B.B. Benson and I found a few (9m or we took 11) of this species. We captured them after dark by shooting and I took 5 with a small net as they attempted to fly out the top of the wells. The wells were 6 to 10 ft. in width and my guess is, about 50 ft. deep. The specimens (1?) which we took were all males. A pond was nearby.