R.K. Selander, 1954 C. zonatus 6 mi. NNW San Fernando, 3000 ft., Chia, Mexico April 26 collected 5 wrens from a group of at least 6 and possibly seven in a similar situation. These levels occurred at nearly all levels from high in the tall trees to near the ground in low trees or level - but mostly then frequent medium sized trees - about 15-20 feet above the ground. I noticed pairs chasing through the vegetation in a similar fashion to those at Las Casas, giving the same clattering calls as they flew. I saw no nests. These wrens do not occur in the most forest but are limited to the thicker stands of vegetation along woods and in gulleys - a mixed evergreen deciduous type with epiphytes on the large trees and an extremely dense understory of bushes, reed-like vines and woody lianas. May 11 Barranca de Metzlac, 3250 ft., Veracruz 2219 Near our tent in the barranca there is a steep slope covered with dense shrubby vegetation, vines, and several tall, epiphyte-covered trees. We heard wrens calling from the trees on this slope as we pitched camp. Calls: 1 - a common call - perhaps the most frequently given is a simple 't-t-t' che-che-chet-sha-dit - all notes on same pitch. This is given usually by a single bird and is most frequent call given by a lone bird. A variation of this call is - 't-t' - the first note