Hauken, James 1976 Journal Hotel Primavera, Oaxaca, Est Oaxaca, Mexico 7-10 February These four days were spent working the area centered about Cerro Pelon between Valle Nacional to the N and Chitlan de Juarez to the S. Two nights were spent camping on the mountains and another in a rather sleazy hotel in Chitlan and we thus had no opportunity for field notes or cataloging. 7-8 February were spent primarily on the N side of Cerro Pelon, working forested areas on the relatively less steep ridges and clear. Chiropterista were taken in Bromeliads in several localities, being quite rather abundant. This was much less abundant, being found only once or twice in Bromeliads (once with a Singingtoiton) and only a bit more commonly on the ground. At least two morphs were readily distinguishable (see color notes). The N slope contains cloud forest Dept moist by winds from the N and we frequently worked in heavy rain or fog. This proved fortunate as one night we walked a road trail 52 Amis N Gueldaca for with lanterns and found several P. "lumps" and one P. jirauy out in the light mist which was falling. The cloud forest is replaced by shrub pine forest as one approaches the top of Cerro Pelon, and at an intermediate locality intermediate between the two had found a dwarf lava, apparently Exiloboa; under a