J. E.  Watson, ?Pearson Island Expedition 1969 - 9. Hydroids?, Transactions of the Royal Society of South Australia, vol. 97, pp. 153-200, 1973.

J. E.  Watson, ?Hydroids of Bruny island, southern Tasmania?, Transactions of the Royal Society of South Australia, vol. 99, no. 4, p. 157--176, 1975.