FIGURE 7. Sertularellidae. a in Shallow water hydroids (Cnidaria, Hydrozoa) from the 2002 NOWRAMP cruise to the Northwestern Hawaiian Islands

FIGURE 7. Sertularellidae. a, Sertularella affinicostata, sp. nov., holotype, hydrocaulus with two hydrothecae, Darwin Island, Galapagos Islands, Ecuador, ROMIZ B3339. Scale equals 0.1 mm. b, Sertularella affinicostata, sp. nov., holotype, hydrocaulus with male gonotheca and a hydrotheca, Darwin Island, Galapagos Islands, Ecuador, ROMIZ B3339. Scale equals 0.1 mm. c, Sertularella affinicostata, sp. nov., paratype, hydrocaulus with three hydrothecae, French Frigate Shoals, ROMIZ B5486. Scale equals 0.1 mm. d, Sertularella affinicostata, sp. nov., paratype, hydrocaulus with two hydrothecae, French Frigate Shoals, ROMIZ B5486. Scale equals 0.1 mm. e, Sertularella affinicostata, sp. nov., paratype, hydrocaulus with a single hydrotheca, French Frigate Shoals, ROMIZ B5486. Scale equals 0.1 mm. f, Sertularella angulosa Bale, 1894, part of hydrocaulus with four hydrothecae, French Frigate Shoals, ROMIZ B5477. Scale equals 0.2 mm. g, Sertularella angulosa Bale, 1894, part of hydrocaulus with four hydrothecae, Kure Atoll, ROMIZ B5425. Scale equals 0.1 mm. h, Sertularella angulosa Bale, 1894, part of hydrocaulus with two hydrothecae, Kure Atoll, ROMIZ B5425. Scale equals 0.1 mm. i, Sertularella areyi Nutting, 1904, part of hydrocaulus with three hydrothecae, Nihoa, ROMIZ B5478. Scale equals 0.2 mm.