Aphanibranchion japonicum Oka, 1906 accepted as Diazona grandis (Oka, 1926) (additional source)
Ascidia sagamiana Tokioka, 1953 (original description)
Ascidia sydneiensis var. divisa (Sluiter, 1898) (basis of record)
Ascidia sydneiensis var. samea (Oka, 1935) (basis of record)
Chelyosoma sibogae Sluiter, 1904 (additional source)
Cnemidocarpa fertilis f. molguloides Tokioka, 1953 accepted as Cnemidocarpa fertilis molguloides Tokioka, 1953 (original description)
Cnemidocarpa fertilis molguloides Tokioka, 1953 (original description)
Didemnum apersum Tokioka, 1953 (original description)
Didemnum areolatum Tokioka, 1953 accepted as Trididemnum areolatum (Herdman, 1906) (original description)
Didemnum flagellatum Tokioka, 1953 (original description)
Didemnum japonicum (Herdman, 1886) (basis of record)
Didemnum pacificum Tokioka, 1953 (original description)
Didemnum partitum Tokioka, 1953 (original description)
Didemnum sagamiana Tokioka, 1953 accepted as Polysyncraton sagamiana (Tokioka, 1953) (original description)
Didemnum translucidum Tokioka, 1953 (original description)
Distaplia dubia (Oka, 1927) (basis of record)
Eudistoma sagamiana Tokioka, 1953 (original description)
Halocynthia cactus (Oka, 1932) (basis of record)
Halocynthia roretzi (Drasche, 1884) (basis of record)
Herdmania momus f. siphonalis (Oka, 1933) (additional source)
Leptoclinides madara Tokioka, 1953 (original description)
Leptoclinides ocellatus (Sluiter, 1909) (basis of record)
Microcosmus hartmeyeri Oka, 1906 (additional source)
Molgula aidae Oka, 1914 (additional source)
Molgula interrupta Tokioka, 1953 accepted as Molgula xenophora Oka, 1914 (original description)
Perophora sagamiensis Tokioka, 1953 (original description)
Polyandrocarpa monotestis Tokioka, 1953 accepted as Eusynstyela monotestis (Tokioka, 1953) (original description)
Polyandrocarpa sagamiensis Tokioka, 1953 accepted as Polyandrocarpa anguinea (Sluiter, 1898) (original description)
Polycarpa cryptocarpa var. kroboja (Oka, 1906) accepted as Polycarpa cryptocarpa kroboja (Oka, 1906) (basis of record)
Polycarpa granosa Tokioka, 1953 (original description)
Polycarpa maculata Hartmeyer, 1906 (additional source)
Polycarpa psammotesta Tokioka, 1953 (original description)
Polysyncraton sagamiana (Tokioka, 1953) (basis of record)
Polyzoa sagamiana Tokioka, 1953 accepted as Polyzoa violacea (Oka, 1915) (original description)
Pyura trigamica Tokioka, 1953 (original description)
Rhabdocynthia siphonalis Oka, 1933 accepted as Herdmania momus f. siphonalis (Oka, 1933) (additional source)
Rhopalaea macrothorax Tokioka, 1953 (original description)
Ritterella pedunculata Tokioka, 1953 accepted as Ritterella tokioka Kott, 1992 (original description)
Sidneioides snamoti (Oka, 1927) (basis of record)
Styela izuana (Oka, 1934) (basis of record)
Styela longipedata Tokioka, 1953 (original description)
Sycozoa kanzasi (Oka, 1930) (basis of record)
Syndiazona grandis f. irregularis Tokioka, 1953 accepted as Diazona grandis f. irregularis (Tokioka, 1953) (original description)

Sagami Bay for Monandrocarpa monotestis (Tokioka, 1953)