Atolla Haeckel, 1880 (additional source)
Atolla verrillii Fewkes, 1886 (additional source)
Aurelia limbata Brandt, 1835 (additional source)
Cassiopea Péron & Lesueur, 1810 (additional source)
Cassiopea andromeda (Forskål, 1775) (additional source)
Cassiopeidae Tilesius, 1831 (additional source)
Coronamedusae (additional source)
Coronatae (additional source)
Coronatae incertae sedis (additional source)
Kampylomyaria (additional source)
Kolpophorae (additional source)
Krykomyaria (additional source)
Leptobrachidae Agassiz, 1862 (additional source)
Linuche unguiculata (Swartz, 1788) (additional source)
Nausithoe atlantica Broch, 1913 (additional source)
Nausithoe globifera Broch, 1913 (additional source)
Nausithoe punctata Kölliker, 1853 (additional source)
Nausithoe rubra Vanhöffen, 1902 (additional source)
Nausithoe simplex (Kirkpatrick, 1890) (additional source)
Nausithoe striata (Vanhöffen, 1910) (basis of record)
Pelagia panopyra Péron & Lesueur, 1810 (additional source)
Periphyllopsis braueri Vanhöffen, 1902 (additional source)
Periphyllopsis galatheae Kramp, 1959 (additional source)
Stygiomedusa gigantea (Browne, 1910) (additional source)

Adriatic Sea for Pelagia noctiluca (Forsskål, 1775) 
Aegean Sea for Pelagia noctiluca (Forsskål, 1775) 
Alaskan part of the Bering Sea for Aurelia limbata Brandt, 1835 
Alaskan part of the Gulf of Alaska for Aurelia limbata Brandt, 1835 
Alaskan part of the North Pacific Ocean for Aurelia limbata Brandt, 1835 
Alboran Sea for Pelagia noctiluca (Forsskål, 1775) 
Amundsen/Bellingshausen Sea for Stygiomedusa gigantea (Browne, 1910) 
Angolan for Stygiomedusa gigantea (Browne, 1910) 
Antarctic Peninsula for Stygiomedusa gigantea (Browne, 1910) 
Azores Canaries Madeira for Pelagia noctiluca (Forsskål, 1775) 
Azores Canaries Madeira for Stygiomedusa gigantea (Browne, 1910) 
Beninese Exclusive Economic Zone for Linuche unguiculata (Swartz, 1788) 
Brazilian Exclusive Economic Zone for Linuche unguiculata (Swartz, 1788) 
Cameroonian Exclusive Economic Zone for Linuche unguiculata (Swartz, 1788) 
Canadian part of the North Pacific Ocean for Aurelia limbata Brandt, 1835 
Cape Verdean Exclusive Economic Zone for Linuche unguiculata (Swartz, 1788) 
Caribbean Sea for Linuche unguiculata (Swartz, 1788) 
Celtic Seas for Pelagia noctiluca (Forsskål, 1775) 
Celtic Seas for Stygiomedusa gigantea (Browne, 1910) 
Central Kuroshio Current for Stygiomedusa gigantea (Browne, 1910) 
East Antarctic Wilkes Land for Stygiomedusa gigantea (Browne, 1910) 
Eastern Coral Triangle for Pelagia panopyra Péron & Lesueur, 1810 
Eastern India for Stygiomedusa gigantea (Browne, 1910) 
Equatorial Guinean Exclusive Economic Zone for Linuche unguiculata (Swartz, 1788) 
French Guiana Exclusive Economic Zone for Linuche unguiculata (Swartz, 1788) 
Gabonese Exclusive Economic Zone for Linuche unguiculata (Swartz, 1788) 
Gambian Exclusive Economic Zone for Linuche unguiculata (Swartz, 1788) 
Ghanaian Exclusive Economic Zone for Linuche unguiculata (Swartz, 1788) 
Guinea Bissau Exclusive Economic Zone for Linuche unguiculata (Swartz, 1788) 
Guinean Exclusive Economic Zone for Linuche unguiculata (Swartz, 1788) 
Gulf of Guinea South for Stygiomedusa gigantea (Browne, 1910) 
Gulf of Maine/Bay of Fundy for Stygiomedusa gigantea (Browne, 1910) 
Guyanese Exclusive Economic Zone for Linuche unguiculata (Swartz, 1788) 
High seas of the Bering Sea for Aurelia limbata Brandt, 1835 
High seas of the North Pacific Ocean for Aurelia limbata Brandt, 1835 
Indonesian Exclusive Economic Zone for Pelagia panopyra Péron & Lesueur, 1810 
Ionian Sea for Pelagia noctiluca (Forsskål, 1775) 
Ivory Coast Exclusive Economic Zone for Linuche unguiculata (Swartz, 1788) 
Japanese part of the North Pacific Ocean for Aurelia limbata Brandt, 1835 
Japanese part of the Philippine Sea for Aurelia limbata Brandt, 1835 
Japanese part of the Sea of Japan for Aurelia limbata Brandt, 1835 
Japanese part of the Sea of Okhotsk for Aurelia limbata Brandt, 1835 
Levantine Sea for Pelagia noctiluca (Forsskål, 1775) 
Liberian Exclusive Economic Zone for Linuche unguiculata (Swartz, 1788) 
Magdalena Transition for Stygiomedusa gigantea (Browne, 1910) 
Mauritanian Exclusive Economic Zone for Linuche unguiculata (Swartz, 1788) 
Mexican part of the North Pacific Ocean for Aurelia limbata Brandt, 1835 
Nigeria - Sao Tome and Principe Joint for Linuche unguiculata (Swartz, 1788) 
Nigerian Exclusive Economic Zone for Linuche unguiculata (Swartz, 1788) 
North Korean part of the Japan Sea for Aurelia limbata Brandt, 1835 
North Sea for Pelagia noctiluca (Forsskål, 1775) 
Northeast Australian Shelf for Pelagia panopyra Péron & Lesueur, 1810 
Northern California for Stygiomedusa gigantea (Browne, 1910) 
Northern Gulf of Mexico for Stygiomedusa gigantea (Browne, 1910) 
Ogasawara Islands for Stygiomedusa gigantea (Browne, 1910) 
Russia-Japan conflict zone part of the North Pacific Ocean for Aurelia limbata Brandt, 1835 
Russia-Japan conflict zone part of the Sea of Okhotsk for Aurelia limbata Brandt, 1835 
Russian part of the Bering Sea for Aurelia limbata Brandt, 1835 
Russian part of the Japan Sea for Aurelia limbata Brandt, 1835 
Russian part of the North Pacific Ocean for Aurelia limbata Brandt, 1835 
Russian part of the Sea of Okhotsk for Aurelia limbata Brandt, 1835 
Saharan Upwelling for Pelagia noctiluca (Forsskål, 1775) 
Sahul Shelf for Pelagia panopyra Péron & Lesueur, 1810 
Sao Tome and Principe Exclusive Economic Zone for Linuche unguiculata (Swartz, 1788) 
Senegalese Exclusive Economic Zone for Linuche unguiculata (Swartz, 1788) 
Sierra Leonian Exclusive Economic Zone for Linuche unguiculata (Swartz, 1788) 
South and West Iceland for Stygiomedusa gigantea (Browne, 1910) 
South China Sea for Pelagia panopyra Péron & Lesueur, 1810 
South European Atlantic Shelf for Pelagia noctiluca (Forsskål, 1775) 
South Korean part of the Japan Sea for Aurelia limbata Brandt, 1835 
South Kuroshio for Pelagia panopyra Péron & Lesueur, 1810 
South Shetland Islands for Stygiomedusa gigantea (Browne, 1910) 
Southern California Bight for Stygiomedusa gigantea (Browne, 1910) 
Southern Gulf of Mexico for Stygiomedusa gigantea (Browne, 1910) 
Sunda Shelf for Pelagia panopyra Péron & Lesueur, 1810 
Surinamese Exclusive Economic Zone for Linuche unguiculata (Swartz, 1788) 
Togolese Exclusive Economic Zone for Linuche unguiculata (Swartz, 1788) 
Tropical Southwestern Pacific for Pelagia panopyra Péron & Lesueur, 1810 
Tunisian Plateau/Gulf of Sidra for Pelagia noctiluca (Forsskål, 1775) 
United States part of the North Pacific Ocean for Aurelia limbata Brandt, 1835 
Virginian for Stygiomedusa gigantea (Browne, 1910) 
Weddell Sea for Stygiomedusa gigantea (Browne, 1910) 
Western Coral Triangle for Pelagia panopyra Péron & Lesueur, 1810 
Western Mediterranean for Pelagia noctiluca (Forsskål, 1775) 
Western Saharan Exclusive Economic Zone for Linuche unguiculata (Swartz, 1788) 

 Additional information

 for Catostylus ouwensi Moestafa & McConnaughey, 1966

This species was only seen by the authors who described it based on 5 specimens; no further mention in the literature [details]

 Distribution

 for Stephanoscyphus bianconis Thiel, 1936

Only known from type locality [details]

 Nomenclature

 for Cassiopea vanderhorsti Stiasny, 1924

Doubtful species or just a variety of C. xamachana [details]

 Nomenclature

 for Catostylus cruciatus (Lesson, 1830)

The species was considered conspecific with Lychnorhiza lucerna (Mianzan & Cornelius, 1999; Silveira & Cornelius, ... [details]

 Nomenclature

 for Catostylus tripterus (Haeckel, 1880)

Haeckel (1880) mentioned that the species resembles a young Rhizostoma. Vanhöffen (1902) wondered to which genus ... [details]

 Nomenclature

 for Mastigias albipunctata Stiasny, 1920

possibly similar to Mastigias papua [details]

 Nomenclature

 for Mastigias andersoni Stiasny, 1926

possibly similar to Mastigias papua [details]

 Nomenclature

 for Mastigias ocellatus (Modeer, 1791)

possibly similar to Mastigias papua [details]

 Nomenclature

 for Mastigias pantherina Haeckel, 1880

possibly similar to Mastigias papua [details]

 Nomenclature

 for Mastigias roseus (Reynaud, 1830)

doubtful species [details]

 Nomenclature

 for Pelagia cyanella Péron & Lesueur, 1810

Species requiring further studies, doubtful. [details]

 Nomenclature

 for Pelagia discoidea Eschscholtz, 1829

Species requiring further studies, doubtful. [details]

 Nomenclature

 for Pelagia flaveola Eschscholtz, 1829

Species requiring further studies, doubtful. [details]

 Nomenclature

 for Pelagia panopyra Péron & Lesueur, 1810

Species requiring further studies, doubtful. [details]

 Nomenclature

 for Polyrhiza vesiculosa (Ehrenberg, 1837)

Polyrhiza is considered a doubtful genus because only Ehrenberg and Haeckel observed specimens; description by ... [details]

 Validity

 for Phyllorhiza chinensis Agassiz, 1862

The species Phyllorhiza chinensis L. Agassiz, 1862 (from China Seas) and Phyllorhiza trifolium Haeckel, 1880 (from ... [details]

 Validity

 for Phyllorhiza trifolium Haeckel, 1880

The species Phyllorhiza chinensis L. Agassiz, 1862 (from China Seas) and Phyllorhiza trifolium Haeckel, 1880 (from ... [details]