Hydractinia betkensis (Watson, 1978)

Hydractinia betkensis (Watson, 1978) [ex Stylactis betkensis]. A, gastrozooid, B, gonozooid with male gonophore; C and D, stages in development of female gonophore from cleared whole mounts — C, young gonophore with eggs surrounding spadix; D, mature gonophore entirely filled with eggs (A—D drawn to same scale); E, colony on gastropod shell, Parcannassa burchardi (Philippi); F, part of colony on shell; G, H, nematocysts — G, ?basitrichous isorhiza, H, ?eurytele.

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.