FIGURE 1 in Additional shallow-water thecate hydroids (Cnidaria: Hydrozoa) from Guadeloupe and Les Saintes, French Lesser Antilles

FIGURE 1. Typical large, visually dominant hydroid species inhabiting the reefs of Guadeloupe. A: Colony of Nemalecium lighti (Hargitt, 1924) growing on sponge. B: Sertularella diaphana (Allman, 1885), morphotype 2—single, unbranched plumes growing upright through sand of seabed. C: S. diaphana, morphotype 1—large, fan-shaped colonies growing upside-down on black gorgonian attached to ceiling of submarine arch. D: Colonies of Thyroscyphus ramosus Allman, 1877 growing on sandy bottom. E: Colony of Halopteris carinata Allman, 1877 growing epizootically on sponge. F and G: Dentitheca dendritica (Nutting, 1900)—colony (F) and close-up (G) showing associated zoanthid polyps. H: Plumularia setacea (Linnaeus, 1758). I: Typical, easily recognizable, dark-pigmented colony of Macrorhynchia clarkei (Nutting, 1900). J: Large tuft of Macrorhynchia philippina Kirchenpauer, 1872 on hard substrate. K: Fertile cormoids of Aglaophenia rhychocarpa Allman, 1877. Photo courtesy of Jean-Michel Sutour (E, F, I, J), Anne Prouzet (B, C, D), Denis Ader (H, K), Vincent Maran (A), Alain Goyeau (G).