Acaulis primarius Stimpson, 1853 (redescription)
Boreohydra simplex Westblad, 1937 accepted as Plotocnide borealis Wagner, 1885 (redescription)
Bougainvillia britannica (Forbes, 1841) (redescription)
Bougainvillia muscus (Allman, 1863) (redescription)
Bougainvillia principis (Steenstrup, 1850) (redescription)
Bougainvillia superciliaris (L. Agassiz, 1849) (redescription)
Candelabrum phrygium (Fabricius, 1780) (additional source)
Catablema vesicarium (A. Agassiz, 1862) (redescription)
Cladonema radiatum Dujardin, 1843 (redescription)
Clava multicornis (Forsskål, 1775) (redescription)
Corymorpha nutans M. Sars, 1835 (redescription)
Coryne pusilla Gaertner, 1774 (redescription)
Dicoryne conferta (Alder, 1856) (redescription)
Ectopleura L. Agassiz, 1862 (redescription)
Ectopleura larynx (Ellis & Solander, 1786) (redescription)
Eudendrium annulatum Norman, 1864 (redescription)
Eudendrium capillare Alder, 1856 (redescription)
Eudendrium rameum (Pallas, 1766) (redescription)
Eudendrium ramosum (Linnaeus, 1758) (redescription)
Eudendrium ramosum (Linnaeus, 1758) (additional source)
Eudendrium vaginatum Allman, 1863 (redescription)
Euphysa aurata Forbes, 1848 (redescription)
Euphysa tentaculata Linko, 1905 (redescription)
Halitholus cirratus Hartlaub, 1914 (redescription)
Hybocodon prolifer Agassiz, 1860 (redescription)
Hydractinia echinata (Fleming, 1828) (redescription)
Leuckartiara nobilis Hartlaub, 1914 (redescription)
Neoturris breviconis (Murbach & Shearer, 1902) (redescription)
Plotocnide borealis Wagner, 1885 (redescription)
Protohydra leuckarti Greeff, 1870 (redescription)
Rathkea octopunctata (M. Sars, 1835) (redescription)
Rhizogeton nudus Broch, 1910 (redescription)
Rhizorhagium roseum M. Sars, 1874 (redescription)
Sarsia lovenii (M. Sars, 1846) (redescription)
Sarsia tubulosa (M. Sars, 1835) (redescription)
Stauridiosarsia producta (Wright, 1858) (redescription)
Tubularia indivisa Linnaeus, 1758 (redescription)