While one of us (Dalquest) was in a dugout canoe that was being paddled up a small unnamed tributary of the Rio Coatzacoalcos, through dense jungle, he grasped a decayed and termite damaged tree-trunk projecting approximately three feet above the surface of the water to steady the canoe. At that instant two bats were detected in one of the many small holes in the trunk, which was eight to nine inches in diameter. It was a simple matter to enlarge the hole and extract the animals. Superficially t