Figure 13 in Species of Antarctoscyphus Peña Cantero, García Carrascosa and Vervoort, 1997 (Cnidaria: Hydrozoa: Symplectoscyphidae) collected by US Antarctic expeditions: biogeographic implications

Figure 13. Antarctoscyphus spiralis (Hickson and Gravely, 1907): (a) fragment of lateral branch showing branching and hydrothecal arrangement; (b) cauline apophysis showing axillary hydrotheca and basal part of paired branches; (c) hydrocladial branching; (d) hydrotheca in lateral view; (e detail of distal part of hydrotheca showing cusps (note two internal cusps); (f) gonotheca. Scale bars: 1 mm (a), 200 µm (b, c, f), 100 µm (d), 25 µm (e).