1. P. A. Colinvaux, J. E. Moreno, M. B. Bush, Smithsonian Tropical Research Institute, Post Office Box 2072, Balboa, Panama (mail from the United States should be sent to the Smithsonian Tropical Research Institute, Unit 0948, APO AA 34002, USA).
2. P. E. De Oliveira, Field Museum, Roosevelt Road at Lake Shore Drive, Chicago, IL 60605, USA.
3. M. C. Miller, Department of Biology, University of Cincinnati, Cincinnati, OH 45221, USA.