1. Southeastern Cooperative Wildlife Disease Study, Department of Parasitology, College of Veterinary Medicine, The University of Georgia, Athens, Georgia 30602, USA
2. Present address: Central Research, Pfizer Inc., P.O. Box 88, Terre Haute, Indiana 47808, USA
3. Reprint requests to: William R. Davidson, Southeastern Cooperative Wildlife Disease Study, Department of Parasitology, College of Veterinary Medicine, The University of Georgia, Athens, Georgia 30602, USA