Acryptolaria abies (Allman, 1877) (additional source)
Acryptolaria conferta (Allman, 1877) (additional source)
Acryptolaria longitheca (Allman, 1877) (additional source)
Acryptolaria pulchella (Allman, 1888) (additional source)
Aglaophenia latecarinata Allman, 1877 (additional source)
Aglaophenia trifida Agassiz, 1862 (additional source)
Aglaophenopsis hirsuta Fewkes, 1881 (basis of record)
Bougainvillia carolinensis (McCrady, 1859) (additional source)
Cladocarpus carinatus Nutting, 1900 (additional source)
Cladocarpus flexilis Verrill, 1885 (additional source)
Cladocarpus flexuosus Nutting, 1900 (additional source)
Cladocarpus paradiseus Allman, 1877 (additional source)
Cladocarpus sigma (Allman, 1877) (additional source)
Cladocarpus tenuis Clarke, 1879 (additional source)
Clytia coronata (Clarke, 1879) accepted as Clytia hemisphaerica (Linnaeus, 1767) (additional source)
Clytia gracilis (M. Sars, 1851) (additional source)
Clytia hemisphaerica (Linnaeus, 1767) (additional source)
Clytia hummelincki (Leloup, 1935) accepted as Clytia brevithecata (Thornely, 1900) (additional source)
Clytia linearis (Thorneley, 1900) (additional source)
Clytia longicyatha (Allman, 1877) accepted as Obelia longicyatha Allman, 1877 accepted as Obelia bidentata Clark, 1875 (basis of record)
Clytia minuta (Nutting, 1901) accepted as Clytia hemisphaerica (Linnaeus, 1767) (additional source)
Clytia noliformis (McCrady, 1859) sensu Calder, 1991 (additional source)
Clytia raridentata (Alder in Hincks, 1861) accepted as Clytia hemisphaerica (Linnaeus, 1767) (additional source)
Crypthelia floridana Cairns, 1986 (additional source)
Crypthelia peircei Pourtalès, 1867 (additional source)
Cryptolaria pectinata (Allman, 1888) (additional source)
Cuspidella costata Hincks, 1868 accepted as Laodicea undulata (Forbes & Goodsir, 1853) (additional source)
Dynamena disticha (Bosc, 1802) (additional source)
Errina cochleata Pourtalès, 1867 (additional source)
Eucuspidella pedunculata (Allman, 1877) accepted as Campanulina pedunculata (Allman, 1877) (additional source)
Eudendrium carneum Clarke, 1882 (additional source)
Eudendrium distichum Clarke, 1879 (additional source)
Eudendrium eximium Allman, 1877 (basis of record)
Eudendrium gracile Allman, 1877 (additional source)
Eudendrium ramosum (Linnaeus, 1758) (additional source)
Eudendrium tenue Agassiz, 1865 accepted as Eudendrium capillare Alder, 1856 (additional source)
Filellum serpens (Hassall, 1848) (additional source)
Filellum serratum (Clarke, 1879) (additional source)
Halecium filicula Allman, 1877 (additional source)
Halecium macrocephalum Allman, 1877 (additional source)
Halecium sessile Norman, 1867 (additional source)
Halecium tenellum Hincks, 1861 (additional source)
Halopteris clarkei (Nutting, 1900) (additional source)
Hincksella cylindrica (Bale, 1888) (additional source)
Lafoea coalescens Allman, 1877 (additional source)
Lafoea dumosa (Fleming, 1820) (additional source)
Lafoea gracillima (Alder, 1856) accepted as Lafoea dumosa (Fleming, 1820) (additional source)
Lafoea tenellula Allman, 1877 accepted as Lafoea dumosa (Fleming, 1820) (additional source)
Lepidopora carinata (Pourtalès, 1867) (additional source)
Lepidopora glabra (Pourtalès, 1867) (additional source)
Leuckartiara octona (Fleming, 1823) (additional source)
Lytocarpia bispinosa (Allman, 1877) (additional source)
Lytocarpia distans (Allman, 1877) (additional source)
Modeeria rotunda (Quoy & Gaimard, 1827) (additional source)
Monostaechas quadridens (McCrady, 1859) (additional source)
Obelia bidentata Clark, 1875 (additional source)
Obelia commissuralis McCrady, 1859 accepted as Obelia dichotoma (Linnaeus, 1758) (additional source)
Obelia dichotoma (Linnaeus, 1758) (additional source)
Obelia geniculata (Linnaeus, 1758) (additional source)
Obelia hyalina Clarke, 1879 (basis of record)
Obelia longicyatha Allman, 1877 accepted as Obelia bidentata Clark, 1875 (additional source)
Pliobothrus tubulatus (Pourtalès, 1867) (additional source)
Plumularia attenuata Allman, 1877 (additional source)
Plumularia filicula Allman, 1877 (additional source)
Plumularia macrotheca Allman, 1877 (additional source)
Plumularia setacea (Linnaeus, 1758) (additional source)
Porpita porpita (Linnaeus, 1758) (additional source)
Schizotricha dichotoma Nutting, 1900 (additional source)
Sertularella diaphana (Allman, 1885) (additional source)
Sertularella gayi (Lamouroux, 1821) (additional source)
Sertularella tenella (Alder, 1857) (additional source)
Stylaster complanatus Pourtalès, 1867 (additional source)
Stylaster duchassaingi Pourtalès, 1867 (additional source)
Stylaster erubescens Pourtalès, 1868 (additional source)
Stylaster miniatus (Pourtalès, 1868) (additional source)
Symplectoscyphus amphorifer (Allman, 1877) accepted as Symplectoscyphus amphoriferus (Allman, 1877) (basis of record)
Synthecium tubithecum (Allman, 1877) (additional source)
Tridentata marginata (Kirchenpauer, 1864) (basis of record)
Velella velella (Linnaeus, 1758) (additional source)
Ventromma halecioides (Alder, 1859) accepted as Kirchenpaueria halecioides (Alder, 1859) (additional source)

 Lectotype

 for Obelia alternata Fraser, 1938

Ecuador, Galápagos Islands, Charles Island, Post Office Bay, 01°14’37”S, 90°28’08”W, 15 fm (27 m), rock. [details]