1. Department of Biology; University of Puerto Rico - Río Piedras; P.O. Box 23360 San Juan Puerto Rico 00931
2. Department of Vertebrate Zoology; National Museum of Natural History; Smithsonian Institution; PO Box 37012 Washington DC 20013 USA
3. Department of Biological Sciences; The George Washington University; 2023 G St. NW Washington DC 20052 USA