Koutoulis et al. Vol. 137, No. 5, June 2, 1997. Pages 1069–1080.Due to an error, the affiliation of co-author Kazuo Inaba was mislabeled. His correct affiliations are Worcester Foundation for Biomedical Research, Shrewsbury, Massachusetts 01545; and Misaki Marine Biological Station, The University of Tokyo, Kanagawa 238-02 Japan.