Abietinaria traski (Torrey, 1902) (additional source)
Antennella paucinoda Fraser, 1935 accepted as Antennella quadriaurita Ritchie, 1909 (additional source)
Cladocarpus bocki Jäderholm, 1919 (additional source)
Cladocarpus crenatus var. allmani Ritchie, 1909 accepted as Cladocarpus crenatus (Fewkes, 1881) (basis of record)
Clytia edwardsi (Nutting, 1901) accepted as Clytia hemisphaerica (Linnaeus, 1767) (basis of record)
Clytia multiannulata Hirohito, 1995 (original description)
Cryptolaria exserta Busk, 1858 (additional source)
Cuspidella gigantea Stechow, 1923 (redescription)
Cuspidella urceolata Hirohito, 1995 (original description)
Dynamena brevis (Fraser, 1935) (additional source)
Dynamena exigua (Allman, 1877) accepted as Dynamena disticha (Bosc, 1802) (additional source)
Dynamena japonica Stechow, 1920 (redescription)
Egmundella humilis Fraser, 1936 (additional source)
Gymnangium indivisum (Fraser, 1936) (additional source)
Gymnangium ishikawai (Stechow, 1908) (additional source)
Gymnangium roretzii (Marktanner-Turneretscher, 1890) (additional source)
Gymnangium vegae (Jäderholm, 1903) (additional source)
Halecium crinis Stechow, 1913 (redescription)
Halecium cymosum Fraser, 1935 (additional source)
Halecium flabellatum Fraser, 1935 (additional source)
Halecium perexiguum Hirohito, 1995 (original description)
Halecium pyriforme Hirohito, 1995 (original description)
Haliaria vegae (Jäderholm, 1903) accepted as Gymnangium vegae (Jäderholm, 1903) (basis of record)
Halicetta expansa (Jäderholm, 1903) accepted as Gymnangium expansum (Jäderholm, 1903) (basis of record)
Halicetta gracilicaulis (Jäderholm, 1903) accepted as Taxella gracilicaulis (Jäderholm, 1903) (basis of record)
Hydrodendron (Dendrophiodissa) Hirohito, 1995 accepted as Hydrodendron Hincks, 1874 (original description)
Hydrodendron (Dendrophiodissa) stechowi Hirohito, 1995 accepted as Hydrodendron stechowi Hirohito, 1995 (original description)
Hydrodendron violaceum Hirohito, 1995 (original description)
Lafoea paxi Stechow, 1932 (status source)
Lafoeina vilaevelebiti Hadzi, 1917 (basis of record)
Lytocarpia myriophyllum orientalis (Billard, 1908) accepted as Lytocarpia orientalis (Billard, 1908) (basis of record)
Lytocarpia nigra (Nutting, 1906) (basis of record)
Nemertesia japonica (Stechow, 1907) (redescription)
Plumularia filicaulis var. japonica Jäderholm, 1919 accepted as Plumularia filicaulis Kirchenpauer, 1876 (additional source)
Sagamihydra Hirohito, 1995 accepted as Halecium Oken, 1815 (original description)
Sagamihydra reduplicata (Fraser, 1935) accepted as Halecium reduplicatum (Fraser, 1935) (basis of record)
Salacia pyriformis (Fraser, 1936) (redescription)
Salacia tetracythara Lamouroux, 1816 (additional source)
Scandia brevitheca (Leloup, 1938) accepted as Anthohebella brevitheca (Leloup, 1938) (basis of record)
Scandia najimaensis Hirohito, 1995 accepted as Anthohebella najimaensis (Hirohito, 1995) (original description)
Scandia neglecta (Stechow, 1913) (new combination reference)
Sertularella costata Leloup, 1940 (additional source)
Sertularella inabai Stechow, 1913 (additional source)
Sertularella sinensis Jäderholm, 1896 (additional source)
Sertularia hattorii Leloup, 1940 (additional source)
Sertularia heteroclada (Jäderholm, 1902) (new combination reference)
Sertularia pyriformis Fraser, 1936 accepted as Salacia pyriformis (Fraser, 1936) (redescription)
Sertularia stechowi Hirohito, 1995 accepted as Bicaularia tongensis (Stechow, 1919) (original description)
Tetrapoma fasciculatum Hirohito, 1995 accepted as Tripoma arboreum Hirohito, 1995 (original description)
Tripoma Hirohito, 1995 (original description)
Tripoma arboreum Hirohito, 1995 (original description)
Zygophylax sagamiensis Hirohito, 1983 (redescription)

Sagami Bay for Hydrodendron (Dendrophiodissa) stechowi Hirohito, 1995 
Sagami Bay for Salacia tetracythara Lamouroux, 1816 

 Status

 for Hydrodendron pacificum (Stechow, 1913)

Could be conspecific with Hydrodendron leloupi Hirohito, 1983 [details]

 Type locality

 for Halecium flabellatum Fraser, 1935

Shionomisaki, Japan [details]

 Type locality

 for Hydrodendron (Dendrophiodissa) stechowi Hirohito, 1995

Japan, Honshu Island, Sagami Bay, Okinose Bank [details]