1. Faulkner, G. H., J. Linn. Soc. (Zool.), 37, 109 (1930). This includes references to Malaquin‘s work.
2. McIntosh, W. C., "British Marine Annelids", 4 (Ray Society, London, 1922–23).
3. Fox, H. Munro, Proc. Roy. Soc., B, 112, 479 (1933).
4. Fox, H. Munro, Proc. Roy. Soc., B, 125, 554 (1938).
5. Bourne, G., Quart. J. Exp. Physiol., 32, 1 (1944).