55 Río Agua Dulce April 27 Hemulus occurs in dry bushy deciduous veg - etation where a solidly marked bird would be conspicuous. The multitude of twigs & tiny branches of the vegetation of Hemulus habitat, adapted to this is the patterned markings of Hemulus - many fork a light area dorsally & a brownish cast to the underparts with a few spots & tiny bars. I noted the concealing effect of the pattern and color of Hemulus against a background of dry, bare branches & twigs - and possibly leaves on the ground although I doubt that Hemulus frequents the ground to any great extent. T. pleurostictus present along the Río Agua Dulce but not too commonly. The nigricaudatus has a wider range of habitat dist- bution as shown by its range in Guatemala & the situations I have seen it in - including the spots at La Palca and Ocuilapa. On the other hand it is almost possible to judge whether Chifpenio will be present in a given place by the kind of the vegetation - ie presence of a large mango or cotton, evergreen tree & preserving occacia & a large tangle of vines & smaller trees. Even within the Tonala area proper the Chifpenio area is not common in the drier spots - such as near Paredon and close to Puerto Arista - but neither is nigricaudatus present.