[1] Mem Univ Newfoundland, Fisheries & Marine Inst, St John, NF A1C 5R3, Canada
[2] Plymouth Marine Lab, Ctr Coastal & Marine Sci, Marine Biodivers Grp, Plymouth PL1 3DH, Devon, England
[3] Natl Museum Nat Hist, Biol Marine Invertebrates Lab, Natl Ctr Sci Res, F-75231 Paris, France
[4] Netherlands Inst Ecol, Ctr Estuarine & Coastal Res, NL-4400 AC Yerseke, Netherlands
[5] Australian Museum, Sydney, NSW 2010, Australia
[6] Univ Maine, Darling Marine Ctr, Walpole, ME 04573 USA
[7] Univ Tokyo, Ocean Res Inst, Tokyo 164, Japan
[8] Nat Hist Museum, Namatode & Polychaete Res Grp, London SW7 5BD, England
[9] Univ Hawaii Manoa, Dept Oceanog, Honolulu, HI 96822 USA