1. Aquatic Parasitology Laboratory, Southeastern Cooperative Fish Parasite and Disease Laboratory, School of Fisheries, Aquaculture, and Aquatic Sciences, College of Agriculture, Auburn University, 559 Devall Drive, Auburn, Alabama 36832.
2. Biology Department and Biological Field Station, 120 Perna Science Building, State University of New York, College at Oneonta, Oneonta, New York 13820.
3. Arkansas Game and Fish Commission, 2 Natural Resources Drive, Little Rock, Arkansas 72205.