. K. Selander, 1954 C. nigricaudatus 45 Rancho Ocuilapa, Chiapas April 4 Tonala', stopping at our old collecting spot 2 mi. SE Ocuilapa where we took 2 nigricaudatus from a group of three in a clump of trees near the road. The cut over area has been burned since our first visit and we found no other ones. I imagine that we have now exterminated the small population living in the clumps of trees along the road. Between our 12:1 mi. camp and Ocuilapa the land is dry with few areas having suitable stands of trees for the vines. Along the foot hills is the dry, low thorny deciduous forest - almost certainly not suitable habitat. Noted no evidence of chiofensis in the valley. At Ocuilapa we camped near the river. Heard one vwen calling in the stand of mangos, guanacaste, and anates near the stream - which has a little water from springs. April 5 In early morning I walked carlward towards the hills hunting. In streamside tangle of vines in proximity to large trees I found a lone bird (#1) which I heard singing "wet-do-it, wet-do-it" repeatedly. Also a variation "we-do-it" and another song "a-wet, a-wet, a-wet." No other individuals in the immediate area. Later on and a bit towards the hills I took a pair foraging 25 feet above the ground in a vine-tangled branch of a rather large tree. The foliage of tree and vines combined formed