1. New York State Museum, Albany, NY 12230, USA
2. Department of Biology and Museum of Southwestern Biology, University of New Mexico, Albuquerque, NM 87131, USA
3. Museum of Vertebrate Zoology, University of California, Berkeley, CA 94720, USA
4. National Museum of Natural History, Smithsonian Institution, PO Box 37012, Washington, DC 20013-7012, USA