Puerto del Triunfo, The plaza is used for pasturing horses and cattle which are kept about the village; and in the center of the plaza is the cement water fountain and watering tank where native women come to do their washing and to get water for house use which they carry in earthen crocks on their heads. A canela trail leads due east through the dense and heavy coastal jungle from the north east corner of the village. It was along this trail that much of my work was carried on. At approximately a mile and one-half or two miles to the east, numerous small clear jungle streams, which taste strongly of sulphur, suddenly appear and flow off toward a swampy region within three to four feet trench like banks that decrease in height as they get nearer to the swamp. Where these streams burst out of the ground the trees are large, in the shade of which grow collol palms thin in some places and dense in others; in the main branches some one hundred feet from the ground bands of spider monkeys (Ateles) are frequently seen feeding or scampering through the limbs. Nearer the swamp the overhead shade is not so high and the collol palms are thicker. In the swamp region the trees are