8/8/25 10 of corn and a soft kernel of some thind in its pouch, I have been baiting these traps by placing corn gains on the trap near the tree. The other specimen was caught in a hole in a small clay bank near the trail that lead to the canyon. Here the jungle was rather open and rocky. These traps were baited with corn. This mouse had 10 Nematodes in its stomach. they were approximately from 1 in. to 1/2 in. long. My experience with these spiny-pocket mice has been many tripped traps with nothing in them. They are evidently very fely creatures. I found these spiny-pocket mice very hard to make up unless the specimen had not been dead long. In some clay mud down in the canyon I saw some cat tracks which were probably (Felis pardialis - ). The trap near the lake where I caught my first Opossum (Didelphis mesamericana - ) had another smaller female, she measured 5-78 mm. in length. In her pouch were & six 14 m.m. young. Dr. Miller put them in formalin. The stomach of this specimen contained some yellow fruit and some mammal hair. Higher up on the canyon ridge I found a small group of monkeys (Ateles) running themselves. They dashed off through the trees when I came within in sight. They have a grunt something like a pig's