hedges to an area where the jungle is dense. In many places on either side of the old lagoon bed there are dense thickets of cojol palms. Under the palms one frequently sees cacyprocla and lin hollow trees in these thickets one can spot saccopteryp. There are water holes in some parts of the old lagoon that are slowly drying up, and it is in the soft mud here that Procyon and Yacua traces are common. Back nearer camp and on higher ground are scrubby gincard and Dividivi trees growing in adoby soil. The ground is dry and hard with two and three inch cracks, and the grass is short and dry, here and there replaced by short dry dead weeds. Approximately three hundred yards east of camp is a field enclosed by a pole fence. Most of the field contains dry corn stalks but part of it is covered with low dead weeds through which well worn trails of Sigmodon run from one crack to another in the adoby soil. The track is now cleared back from the pole fences so that