1. Biology Department, The City College of New York, New York, New York 10031 USA
2. Department of Biological Sciences, Fordham University, Bronx, New York 10458 USA
3. The Graduate Center, City University of New York, New York, New York 10016 USA
4. Department of Invertebrate Zoology, American Museum of Natural History, New York, New York 10024 USA