J. E.  Watson, ?Review of hydroids introduced to Victorian waters?, The Introduced Species of Port Phillip Bay, Victoria. Centre for Research on Introduced Marine Pests Technical Report, no. 20, p. 88--107, 1999.

J. E.  Watson, ?Hydroids of the Archipelago of the Recherche and Esperance, Western Australia: annotated list, redescriptions of species and descriptions of new species?, The marine flora and fauna of Esperance, Western Australia. Western Museum, Perth, p. 495--611, 2005.