R. K. Selander, 1953 69 La Polka, 25 ft., Chiapas, Mexico Oct. 28 Mojarra's region and claimed the "chancocá" was "bastante" around Mojarra's and at some place way down the coast. He also claimed to have seen them near Chiapa - but this may be Helodytes gonotus. (It will be necessary to collect specimens of the vegetation before returning to Tuxtla'. Miranda's book is of no value in identifying the vegetation. The photographs are so poor that I can't use the book at all.) It will be important to hunt in the mountains NE of La Polka and east of Tonala'. Also we must hunt along the road from Tonala' to La Barita since wrens probably occur there. There may be a valley between the hill NE of La Polka and the main mountain mass. None of the natives at La Polka knew the giant wren (chicpensis) so I guess it does not occur there. It may occur at Esmeralda where the vegetation looks OK. for it. Elevation at La Polka is probably very close to sea-level. Tomorrow we are going to Mojarra's where I hope to get a good series of nigricaudatus and study their habitat.