Herdwilton 1950 Oct. 19 5 km. N. Villavieja, 1400 ft., Huila, Colombia, S.A. Site beside a "road" (apparently cars have navigated it in the past) which comes out from Villavieja. The surrounding countryside is largely arid, with areas of exposed clayey rock and sparse short grass occupying most of the area. There are scattered patches of thorn scrub (heavily salted with mesophytic shrubs and trees) in the bottoms of small gullies which cut the countryside everywhere I have seen so far. One of those gullies flows past camp, just W. of the campsite. This gully, in the vicinity of camp and on S. to where it joins a small quebrada flowing to the Magdalena R., is bordered (and filled) by a rather dense tangle of trees and shrubs. About 100 yards S. of camp, the "road" from Villavieja crosses a quebrada flowing W. & S.W. to the Magdalena R. (perhaps 2 mi. distant). Along this quebrada the vegetation is in spots quite thick and some tall trees can be seen. The relative permanence of flow in the above quebrada may be indicated by the occurrence of small (1"-1'1/2") fish in its waters. At night the water at the road crossing is cool to the touch; at mid-day it is quite warm to the