Acknowledgments

We wish to thank Mr J. W. Brodie, Director of the New Zealand Oceanographic Institute, D.S.I.R., and Dr D. E. Hurley of the Institute, for supplying us with the first two collections of adults for laboratory study, and for the trouble taken to get this material to us alive. We are indebted to the staff and students of the Zoology Department, Victoria University of Wellington, for their help with plankton and trawl collections from Wellington Harbour. We are especially grateful to Dr R. B. Pike of Victoria University for helpful guidance and discussion, and to Dr L. R. Richardson, Professor of Zoology at Victoria University, 1945-1964 (now retired), for his interest and encouragement with both the adult and larval sections of this study.

Publication of this paper has been assisted by a grant from the Victoria University of Wellington Publications Fund.