my hands against both walls I was able to work my way over to the shelf without pushing the brace pole from its narrow moorings. On this shelf I found a nice series of Phyllostomus showing a splendid age variation in young, Nos. 12169 to 12178 inclusive taken. It was impossible to drive the other bats out, they had too much space to fly about. My getting down from the shelf was even harder than crawling up. The bats kept up a continuous squeek and flutter. At last when secure footing was reached below I was wet from head to foot with perspiration, I was ready to call it a day, Clear warm day. No temperature was recorded. December 18, 1926 - On the east side of the hill on which the village of Tabanas is located and almost directly on the opposite side from the mine we entered the mine. Many tunnels with stokes and chimneys ramified about