Hilary Dole Klein is a writer living in Santa Barbara and the author of "A Guide to Nonsexist Children's Books "(1976) and "Substituting Ingredients "(third edition, 1994), among other books. Adrian M. Wenner is Professor Emeritus of Natural History at the University of California, Santa Barbara, and the author of books, articles, and a chapter in "Comparative Psychology of Invertebrates: The Field and Laboratory Study of Insect Behavior "(1997).