EBERT, DAVID A., Pacific Shark Research Center, Moss Landing Marine Laboratories, Moss Landing, CA 95039, USA. Research Associate, South African Institute for Aquatic Biodiversity, Private Bag 1015, Grahamstown, 6140, South Africa. Research Associate, Department of Ichthyology, California Academy of Sciences, 55 Music Concourse Drive, San Francisco, CA. 94118, USA