FIGURE 11. a in Some shallow-water hydroids (Cnidaria: Hydrozoa) from the central east coast of Florida, USA

FIGURE 11. a, Antennella gracilis: part of hydrocaulus with two hydrothecae, ROMIZ B1090, scale equals 0.25 mm. b, Antennella incerta: front view of hydrotheca, showing laterally-displaced axillar nematotheca, ROMIZ B3973, scale equals 0.25 mm. c, Antennella incerta: hydrocaulus with three hydrothecae, ROMIZ B3973, scale equals 0.25 mm. d, Halopteris alternata: part of hydrocaulus with a hydrocladium and two hydrothecae, ROMIZ B3974, scale equals 0.20 mm. e, Halopteris alternata: part of hydrocladium with two hydrothecae, ROMIZ B3974, scale equals 0.20 mm. f, Halopteris carinata: part of hydrocladium with two hydrothecae, ROMIZ B1128, scale equals 0.20 mm. g, Halopteris carinata: male gonotheca, ROMIZ B1128, scale equals 0.25 mm. h, Halopteris carinata: female gonotheca with two nematothecae, ROMIZ B1128, scale equals 0.25 mm.