1. Division of Vertebrate Zoology; American Museum of Natural History; New York NY 10024 USA
2. Department of Biology; University of Virginia; Charlottesville VA 22901 USA
3. Natural Science Division; Pepperdine University; Malibu CA 90263 USA
4. Department of Animal Science; Texas A&M University; College Station TX 77843 USA
5. International Center for Tropical Ecology; University of Missouri; St. Louis MO 63130 USA
6. Washington University in St. Louis; St. Louis MO 63130 USA