a Chiloncteris rubiginosa, a partial albino, that was clinging to one of the braces. Below and I across the deep slope was a pole that had been notched for footing for a ladder. It lead to a shelf of secure footing beneath the pole where the desired specimen squeeked and squirmed with his fellows on the pole. I thought that if I could possibly cross the slope I might reach the bat with the intention on our butterfly net. So I tried the notched pole with my foot, it seemed solid, then I added a little more weight only to see it crumble and shatter to pieces on the foot wall as it quickly passed from the rays of our lights into darkness below where it splashed into water. Of course this noise frightened our albino and we saw no more of him. Three Chiloncteris were taken, Nos. 12183, 12184, and 12185. I turned my attention to the other side from the tunnel mouth where we were standing.