R. K. Selander, 1954 C. zonatus 15 15 mi. N San Fernando, 2000 ft., Oax, Mexico April 25 is fairly common in the pockets of low forest remaining in the valley. These pockets are, I believe, composed of a mixture of deciduous elements from the lowlands around Tuxtla and elements from the subdeciduous forests such as occur at Santa Rita. They occupy small in extent and probably each pocket supports only a single group of wrens. The stand where I found the 3-4 wrens today is no more than 1/2 mile block in area. - Ruben Diaz recognized the wren when I showed it to him and said they are fairly common here. Probably San Fernando is as low as the wren occurs in this valley since good low deciduous forest begins just below (south of) the town. Birds associated with the wrens include: Saltator atriceps, Saltator coerulescens, Thraupis albice. April 26 6 mi. NNW San Fernando, 3000 ft., Chiapas, Mexico Specimens today show some variation in color of legs or feet but decidedly on the average they are luffier than those taken around Las Casas. There may be some overlap in this character between the two populations, but it is still a good scaled difference. Birds taken today had a line of orange-yellow fat in the inter-clavicular region. I took one specimen from a group of 4? birds below the humid mist forest in a dense stand of mixed ever- green deciduous vegetation - some very tall trees - much like the spot where I saw wrens yesterday. On returning from the mist forest in the afternoon I