FIGURE 5 in Benthic hydroids (Cnidaria, Hydrozoa) from bathyal and abyssal depths of the Northeast Atlantic held in the modern Discovery Collections

FIGURE 5. Clytia gigantea (Hincks, 1866): A, hydrotheca; B, detail of distal part of hydrotheca showing aperture with cusps. Zygophylax levinseni (Saemundsson, 1911): C, fragment of branch showing hydrothecal arrangement; D, hydrotheca, pedicel and apophysis; E, origin of branch showing apophysis and perisarc hole left by missing nematotheca; F, nematotheca; G, gonotheca; H, nematocyst (arrow). Scale bars: 200 µm (A, C, G), 100 µm (B, D–F), 10 µm (H).