Eldredge Bermingham is a staff scientist and deputy director of the Smithsonian Tropical Research Institute in Panama and an associate professor in the biology departments of the University of Missouri, St. Louis, and McGill University in Montreal. Christopher Dick is a Tupper postdoctoral fellow at the Smithsonian Tropical Research Institute. Craig Moritz is director of the Museum of Vertebrate Zoology, chairman of the Berkeley Natural History Museum, and professor in the Department of Integrative Biology at the University of California, Berkeley.