Obelia dichotoma (Linnaeus, 1758)

(fig. 5 G)

Sertularia dichotoma Linnaeus, 1758: 812 .

Obelia dichotoma – Cornelius, 1975: 265, figs 3–4. – Cornelius, 1995b: 296, fig. 69.

Material examined. Stn. T10, 15.ii.2007: one small, sterile stem, on plumose bryozoan. Distribution. Nearly cosmopolitan in coastal waters (Cornelius 1995b). This is the first record of this species for Tristan da Cunha.