Fig. 23. Sertularella quadridens: A, fertile colony from Plater Rock. B, hydrocladiate part of stem from same colony. C, hydrocladialinternode from same colony. D, E, two hydrocladial internodes with differing hydrothecae from microslide from Peel Island, Queensland (microslide from Bale collection, Museum of Victoria). F , gononotheca from colony from Plater Rock. Scale bars: A, 300 mm, B, F, 1,000 µm; C - E, 500 µm.

From Watson, J.E. (2000) Hydroids (Hydrozoa: Leptothecatae) from the Beagle Gulf and Darwin Harbour, northern Australia. The Beagle: Records of the Museums and Art Galleries of the Northern Territory 16: 1-82.

Photographer: Watson, Jeanette. Publisher: Watson, Jeanette.