1. Department of Animal & Plant Sciences, University of Sheffield, S10 2TN, UK (e-mail: )
2. The Linnean Society of London, Burlington House, Piccadilly, London W1J 0BF, UK
3. Leiden University, Centre for the Arts in Society, Postbus 9515, 2300 RA Leiden, The Netherlands
4. Department of Biology, Queens University, Kingston, ON K7L 3N6, Canada