Hendrickson 1950 Hylo labialis Nov. 15 Bogota', 8500 ft., Cundinamarca, Colombia, S.A. Found many individuals a few blocks west of the Servicio Geologico, in the Ciudad Universitaria. The area was a "meadow" of dense, matted, Bermuda-like edge grass, with many pools spotted over it. Most of the pools appeared to be 6"-18" deep at the deepest point; one which I waded across proved to be almost 3' deep. The pools varied in size from tiny puddles to about 20' diam. and 15' x 40' (estimate). It was difficult in many cases to determine the extent of the water-covered area; I several times discovered that I was beginning to walk out on a thick, dense mat of grass "floating" on water. The grass-free water surface was largely covered by "mats" of a tiny duckweed-like plant (with either many leaves or dissected, lobate leaves). This mat was green in places, but most of it was rather strongly suffused with rusty-brown (color of living-not dead-plants). We arrived at about 4:30 P.M., and at that time the frogs were maintaining a fairly strong chorus which could be heard about two blocks away. Most of the frogs seen were sitting well out in the