Balella mirabilis (Nutting, 1906) (additional source)
Corydendrium album Hirohito, 1988 (original description)
Corydendrium brevicaulis Hirohito, 1988 (original description)
Corymorpha iyoensis Yamada, 1959 accepted as Zyzzyzus iyoensis (Yamada, 1959) (new combination reference)
Corymorpha sagamina Hirohito, 1988 (original description)
Coryne sagamiensis Hirohito, 1988 (original description)
Cytaeis imperialis Uchida, 1964 (redescription)
Eudendrium biseriale Fraser, 1935 (additional source)
Eudendrium imperiale Yamada, 1954 accepted as Eudendrium magnificum Yamada, 1954 (source of synonymy)
Hydractinia carcinicola (Hiro, 1939) accepted as Bouillonactinia carcinicola (Hiro, 1939) (redescription)
Hydractinia cryptogonia Hirohito, 1988 (original description)
Hydractinia epiconcha Stechow, 1908 accepted as Schuchertinia epiconcha (Stechow, 1908) (additional source)
Hydractinia granulata Hirohito, 1988 (original description)
Hydractinia hayamaensis (Hirohito, 1988) accepted as Podocoryna hayamaensis Hirohito, 1988 (basis of record)
Hydractinia sodalis Stimpson, 1858 accepted as Hydrissa sodalis (Stimpson, 1858) (redescription)
Hydractinia spiralis Goto, 1910 (redescription)
Hydractinia yerii (Iwasa, 1934) (redescription)
Hydrichthella doederleini Stechow, 1926 accepted as Hydrichthella epigorgia Stechow, 1909 (source of synonymy)
Hydrocoryne miurensis Stechow, 1908 (redescription)
Perarella parastichopae Hirohito, 1988 (original description)
Ptilocodium repens Coward, 1909 (redescription)
Rhizogeton ezoense Yamada, 1964 (redescription)
Rhizorhagium sagamiense Hirohito, 1988 (original description)
Rosalinda sagamina Hirohito, 1988 accepted as Pseudosolanderia sagamina (Hirohito, 1988) (original description)
Stylactis carcinicola Hiro, 1939 accepted as Bouillonactinia carcinicola (Hiro, 1939) (additional source)
Stylactis monoon Hirohito, 1988 accepted as Hydractinia monoon (Hirohito, 1988) (original description)
Stylactis spinipapillaris Hirohito, 1988 accepted as Hydractinia spinipapillaris (Hirohito, 1988) (original description)
Tubularia japonica Hirohito, 1988 accepted as Ectopleura japonica (Hirohito, 1988) (original description)
Zyzzyzus iyoensis (Yamada, 1959) (basis of record)

Sagami Bay for Corydendrium album Hirohito, 1988