Fig. 4 — Bimeria australis Blackburn, 1937. A, typical fertile stem from Westernport Bay, Victoria, drawn from photograph of living colony in situ, showing extension of tentacles in life; B, enlargement of hydranth from preserved material from Popes Eye reef, Port Phillip Bay, Victoria, showing body and tentacle sheaths with covering of adventitious matter; C, fertile stem with one male and two female gonophores, each female gonophore containing a single ripe egg (B and C drawn to same scale); D—F, nematocysts from hydranth — D and E, large and small stenoteles; F, microbasic mastigophore.

From Watson, J.E. (1978) New species and new records of Australian athecate hydroids. Proceedings of the Royal Society of Victoria 90(2): 301-314.

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