Nov 23 5km S Villavicencio, 1600 ft, Meta, Colombia, S.A. Left town at about 8:30 A.M. with Dr. Stebbins and Carlos. We arrived at the point where the road to Ipiaú crosses the Río Ocoa and left the topic there. We walked N through a cleared area on the W side of the river and began Temperature works on Cramidophorus and Ameira viridis. The Rio Ocoa at this point is a clear, fast stream about 20' wide and about 3'-4' deep at the deepest part. Large deep pools were seen at several points. The water bore enough sediment to make the bottom barely visible at more than three feet depth. In the deep pools, the water has a gray color. Numbers of small fish were seen, one bird 1"-3" long with a yellow vertical bar on its tail. We are told that there are many ingrayas in the sandy parts of the Ocoa. Cleared areas, bearing grasses, herbs, and small shrubs with scattered palms and other trees, alternate with apparently untouched tracts of forest. The local people say there are