Puerto del Triunfo, Dept., Usulutan Dec. 28, 1925 - Jan., 25, 1926 Didelphis Pink-bellied Opossum; - Jacuacin Apparently this form is confined to the heavy tropical jungle and especially the Collol palm association. It was in this type of locality that I found the form most commonly at Puerto del Triunfo. Their tracks together with those of the [illegible] juron were thick in the dusty capeta trail that led through the heavy dense jungle. One came into the trail one night not noticing, obviously not noticing me or my light, snooping along and found a piece of an orange. He dropped back on his haunches with a hump in his back and his tail straight out behind, took the prize in his hands and proceeded to eat. When he had finished he carefully licked his paws, looked around for more to eat, and soon waddled on down the trail. The tracks of the Pink-bellied Opossum were found abundantly in the little jungle streams together with those of the juron. Usually when met in the jungle at night the Pink bellied opossum would hurry up the nearest tree from where his little red eyes would reflect in the light of a hunting lamp! They were omnivorous in food habits.