Aglantha globuligera Haeckel, 1879 accepted as Aglaura hemistoma Péron & Lesueur, 1810 (source of synonymy)
Arctapodema antarcticum (Vanhöffen, 1912) accepted as Arctapodema antarctica (Vanhöffen, 1912) (basis of record)
Arctapodema australe (Vanhöffen, 1912) accepted as Arctapodema australis (Vanhöffen, 1912) (basis of record)
Bougainvillia carolinensis (McCrady, 1859) (additional source)
Calycopsis borchgrevinki (Browne, 1910) (additional source)
Calycopsis chuni Vanhöffen, 1911 (additional source)
Calycopsis papillata Bigelow, 1918 (additional source)
Calycopsis simplex Kramp & Damas, 1925 (additional source)
Calycopsis typa Fewkes, 1882 (additional source)
Catablema vesicarium (A. Agassiz, 1862) (additional source)
Cubaia aphrodite Mayer, 1894 (additional source)
Cunina fowleri (Browne, 1906) (additional source)
Cunina peregrina Bigelow, 1909 (additional source)
Cunina proboscidea Metschnikoff & Metschnikoff, 1871 (additional source)
Cunina rhododactyla Haeckel, 1864 accepted as Pegantha rubiginosa (Kölliker, 1853) (source of synonymy)
Dipleurosoma collapsa (Mayer, 1900) accepted as Orchistoma collapsum (Mayer, 1900) accepted as Orchistoma pileus (Lesson, 1843) (basis of record)
Eugymnanthea inequilina Palombi, 1936 accepted as Eugymnanthea inquilina Palombi, 1936 (basis of record)
Eutiara mayeri Bigelow, 1918 (additional source)
Eutima coerulea (Agassiz, 1862) (additional source)
Eutima gentiana (Haeckel, 1879) (additional source)
Eutima variabilis McCrady, 1859 (additional source)
Gotoea similis Kramp, 1959 accepted as Corymorpha similis (Kramp, 1959) (original description)
Melicertissa mayeri Kramp, 1959 (original description)
Mitrocomella cruciata (Agassiz, 1865) (status source)
Moerisia pallasi (Derzhavin, 1912) (new combination reference)
Niobia dendrotentaculata Mayer, 1900 accepted as Niobia dendrotentacula Mayer, 1900 (additional source)
Orchistoma pileus (Lesson, 1843) (additional source)
Pennaria pauper Kramp, 1959 (original description)
Phialidium gelatinosum (Mayer, 1900) accepted as Clytia gelatinosa (Mayer, 1900) (basis of record)
Phialidium mccradyi (Brooks, 1888) accepted as Clytia mccradyi (Brooks, 1888) (additional source)
Phialidium ovalis (Mayer, 1910) accepted as Multioralis ovalis Mayer, 1900 (basis of record)
Proboscidactyla brooksi (Mayer, 1910) accepted as Proboscidactyla stellata (Forbes, 1846) (source of synonymy)
Proboscidactyla pacifica (Maas, 1909) accepted as Proboscidactyla flavicirrata Brandt, 1835 (source of synonymy)
Ptychogastria polaris Allman, 1878 (additional source)
Sibogita geometrica Maas, 1905 (additional source)
Sibogita geometrica occidentalis Kramp, 1959 accepted as Sibogita geometrica Maas, 1905 (original description)
Sminthea Gegenbaur, 1857 (identification resource)
Solmaris vanhoeffeni Neppi & Stiasny, 1911 accepted as Solmaris flavescens (Kölliker, 1853) (status source)
Stauraglaura tetragonima Haeckel, 1879 accepted as Aglaura hemistoma Péron & Lesueur, 1810 (source of synonymy)
Tiaropsidium mediterraneum (Metschnikoff, 1886) (additional source)
Toxorchis brooksi (Mayer, 1910) accepted as Staurodiscus brooksii (Mayer, 1910) accepted as Staurodiscus kellneri (Mayer, 1910) (basis of record)
Toxorchis polynema Kramp, 1959 accepted as Staurodiscus polynema (Kramp, 1959) (original description)
Willia pacifica Maas, 1909 accepted as Proboscidactyla pacifica (Maas, 1909) accepted as Proboscidactyla flavicirrata Brandt, 1835 (source of synonymy)

Azores part of the North Atlantic Ocean for Sibogita geometrica occidentalis Kramp, 1959 
Canary Islands part of the North Atlantic Ocean for Amphogona apicata Kramp, 1957 
St. Helena part of the South Atlantic Ocean for Gotoea similis Kramp, 1959 

 Diagnosis

 for Aeginopsis laurentii Brandt, 1838

Aeginopsis medusa up to 25 mm wide, hemispherical or somewhat conical, apex thick, lateral walls very thin. Stomach ... [details]

 Diagnosis

 for Niobia dendrotentaculata Mayer, 1900

Medusa 4 mm wide, flatter than hemisphere; 12 marginal tentacles; each tentacle bulb is successively developed into ... [details]

 Habitat

 for Aeginopsis laurentii Brandt, 1838

surface to deep water [details]

 Status

 for Cuvieria huxleyi (Haeckel, 1879)

Likely conspecific with Cuvieria carisochroma Péron, 1807 [details]

 Status

 for Mitrocomella cruciata (Agassiz, 1865)

Has not been seen since its original description, all records belong to M. polydiademata. [details]

 Taxonomic remark

 for Corymorpha similis (Kramp, 1959)

Hardly distinguishable from Corymorpha typica, kept separate mainly for biogeographic reasons [details]