1. Grey, M., Fieldiana (Zool.), 37, 265 (1955).
2. Grey, M., in Fishes of the Western North Atlantic, Mem. Sears Found. Mar. Res., 1 (4), 78 (1964).
3. Foxton, P., J. Mar. Biol. Assoc. UK, 43, 295 (1963).
4. Clarke, G. L., and Denton, E. J., in The Sea (edit. by Hill, M. N.), 456 (Interscience, London, 1962).
5. Clarke, W. D., Nature, 198, 1244 (1963).