1. Department of Entomology; The Natural History Museum; London SW7 5BD England
2. Department of Biology; Imperial College at Silwood Park; Ascot Berkshire SL5 7PY United Kingdom
3. Committee on Evolutionary Biology; University of Chicago; 1025 East 57th Street Chicago Illinois 60637
4. Department of Zoology; The Field Museum; Roosevelt Road at Lake Shore Drive Chicago Illinois 60615