1. Institute of Marine Research, Postboks 1870, Nordnes, N-5817 Bergen, Norway; Email: franz@hi.no. Send reprint requests to this address.
2. Zoological Museum, Natural History Museum of Denmark, Universitetsparken 15, DK-2100 Copenhagen, Denmark; Email: jgnielsen@snm.ku.dk.
3. Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian Institution, P.O. Box 37012, MRC 156, Washington, D.C. 20013-7012; Email: baldwinc@si.edu.
4. Harvey Mudd College, F.W. Olin Science Center, 1250 N Dartmouth Ave, Claremont, California 91711; Email: aquattrini@g.hmc.edu.
5. Smithsonian Tropical Research Institute, Apartado Postal 0843-03092, Balboa, Republic of Panama; Email: drr@stri.org.