CHARLES LYDEARD,^* ROBERT H. COWIE,^** WINSTON F. PONDER,^*** ARTHUR E. BOGAN,^**** PHILIPPE BOUCHET,^***** STEPHANIE A. CLARK,^****** KEVIN S. CUMMINGS,^******* TERRENCE J. FREST,^******** OLIVIER GARGOMINY,^********* DAI G. HERBERT,^********** ROBERT HERSHLER,^*********** KATHRYN E. PEREZ,^************ BARRY ROTH,^{*************} MARY SEDDON,^{**************} ELLEN E. STRONG,^{***************} FRED G. THOMPSON<sup>****************


*</sup>Charles Lydeard (clydeard@bama.ua.edu) is an associate professor, in the Department of Biological Sciences, University of Alabama, Tuscaloosa, AL 35487.
^**Robert H. Cowie is an associate researcher at the Center for Conservation Research and Training, University of Hawaii, Honolulu, HI 96822.
^***Winston F. Ponder is principal research scientist in the Malacology Section, Division of Invertebrate Zoology, at the Australian Museum, Sydney NSW 2010, Australia.
^****Arthur E. Bogan is curator of aquatic invertebrates at the North Carolina State Museum of Natural Sciences, Raleigh, NC 27607.
^*****Philippe Bouchet is a senior professor, at the Muséum National d'Histoire Naturelle, 55 Rue Buffon, F-75005 Paris, France.
^******Stephanie A. Clark is a postdoctoral associate, in the Department of Biological Sciences, University of Alabama, Tuscaloosa, AL 35487.
^*******Kevin S. Cummings is a research scientist and curator of mollusks at the Illinois Natural History Survey, Champaign, IL 61820.
^********Terrence J. Frest is a senior partner at Deixis Consultants, Seattle, WA 98115.
^*********Olivier Gargominy is a research associate at the Muséum National d'Histoire Naturelle, 55 Rue Buffon, F-75005 Paris, France.
^**********Dai G. Herbert is a councillor at the Natal Museum, Pietermaritzburg 3200, South Africa.
^***********Robert Hershler is curator in the Department of Invertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, DC 20560.
^************Kathryn E. Perez is a graduate student in the Department of Biological Sciences, University of Alabama, Tuscaloosa, AL 35487.
^{*************}Barry Roth is a research associate at the Museum of Paleontology, University of California, Berkeley, CA 94720.
^{**************}Mary Seddon is a section head in the Department of Biodiversity and Systematic Biology, National Museum of Wales, Cardiff CF I3NP, United Kingdom.
^{***************}Ellen E. Strong is an assistant professor and curator in the Department of Fisheries, Wildlife and Conservation Biology, Bell Museum of Natural History, University of Minnesota, St. Paul, MN 55108.
^{****************}Fred G. Thompson is curator of malacology at the Florida Museum of Natural History, University of Florida, Gainesville, FL 32611.