Author Affiliations +
Frank E. Kurczewski,* James P. Pitts**
*P.O. Box 15251, Syracuse, New York 13215, U.S.A., e-mail: fkurczewski@twcny.rr.com
**Department of Biology, Utah State University, 5305 Old Main Hill, Logan, Utah 84322, U.S.A., e-mail: jpitts@biology.usu.edu