26 Matias Romero - Chinela - Drmus of Tehuantepe May 4 Chinela. Chinela is located in a flat valley surrounded by low hills. Beyond Chinela the country becomes in- cresingly greener until just beyond Matias Romero where the forest begins. This good habitat for humilis in the valley and to Matias Romero, probably. Palma, acacia are common and the vegetation is similar to that on the south coastal plain. The change to subdeciduous tall forest takes place at Matias Romero. There are a few dry pines and ridges beyond that town, then the road gradually descends as you drive north, presumably into the hot, humid Atlantic lowlands. In the forest on the low hills 40mi N there are many small vines near the ground, a few strange palm-like plants similar if not -the same as those above San Fernando, Chis., and tall tin trees either evergreen or deciduous - Deciduous species partly in leaf now. Between Chinela and Matias Romero there is a low shrubby vegetation, shorter and greener than around Tehuantepe, Many areas of grass. Chinela Valley looks similar to a city in Durango as the hills are either grassy or spotted shrubs or with a low deciduous forest - cordone- type cactus. Grassy areas may have been formed after clearing of this forest from the hills. Along gulleys there is totapote and vegetation similar to the lowlands but it is more sparse. It is easy to see where humilis could occur due in the valley but it is a bit difficult to see where zonatus occurs, probably, unless it is on the