Amphitrite rubra (Risso, 1826) (additional source)
Aphrodita australis Baird, 1865 (additional source)
Arabella iricolor (Montagu, 1804) (additional source)
Arenicola cristata Stimpson, 1856 (additional source)
Audouinia comosa (Marenzeller, 1879) accepted as Cirriformia tentaculata (Montagu, 1808) (new combination reference)
Cirratulus cirratus (O. F. Müller, 1776) (additional source)
Clymene (Euclymene) annandalei (Southern, 1921) accepted as Euclymene annandalei Southern, 1921 (new combination reference)
Diopatra neapolitana Delle Chiaje, 1841 (additional source)
Eteone (Mysta) ornata Grube, 1878 accepted as Mysta ornata (Grube, 1878) (new combination reference)
Glycera onomichiensis Izuka, 1912 (additional source)
Glycera subaenea Grube, 1878 (additional source)
Halosydna nebulosa (Grube, 1866) (additional source)
Harmothoe sinagawaensis Izuka, 1912 accepted as Arctonoella sinagawaensis (Izuka, 1912) (additional source)
Hemipodus yenourensis Izuka, 1912 accepted as Hemipodia yenourensis (Izuka, 1912) (additional source)
Lepidonotus helotypus (Grube, 1877) accepted as Hermilepidonotus helotypus (Grube, 1877) (additional source)
Lepidonotus sagamiana (Izuka, 1912) accepted as Lepidonotus sagamianus (Izuka, 1912) (basis of record)
Lepidonotus sagamianus (Izuka, 1912) (new combination reference)
Loimia medusa (Savigny, 1822) (additional source)
Lumbriconereis heteropoda Marenzeller, 1879 accepted as Kuwaita heteropoda (Marenzeller, 1879) (additional source)
Melinna cristata (M. Sars, 1851) (additional source)
Mysta maculata Treadwell, 1920 accepted as Mysta ornata (Grube, 1878) (source of synonymy)
Myxicola platychaeta Marenzeller, 1884 accepted as Myxicola infundibulum (Montagu, 1808) (additional source)
Nephthys caeca (Fabricius, 1780) accepted as Nephtys caeca (Fabricius, 1780) (additional source)
Nephthys ciliata [auctt.] accepted as Nephtys ciliata (Müller, 1788) (additional source)
Nephthys sinensis Fauvel, 1932 accepted as Aglaophamus sinensis (Fauvel, 1932) (additional source)
Nereis (Ceratonereis) erythraeensis (Fauvel, 1918) accepted as Simplisetia erythraeensis (Fauvel, 1918) (new combination reference)
Nereis (Neanthes) crucifera Grube, 1878 accepted as Neanthes crucifera (Grube, 1878) (new combination reference)
Nereis (Neanthes) oxypoda Marenzeller, 1879 accepted as Nectoneanthes oxypoda (Marenzeller, 1879) (new combination reference)
Nereis ezoensis Izuka, 1912 accepted as Nereis vexillosa Grube, 1851 (additional source)
Nereis japonica Izuka, 1908 accepted as Hediste japonica (Izuka, 1908) (additional source)
Nereis shishidoi Izuka, 1912 accepted as Cheilonereis shishidoi (Izuka, 1912) (additional source)
Nicolea sinensis Fauvel, 1932 (additional source)
Perinereis aibuhitensis (Grube, 1878) (additional source)
Perinereis brevicirris (Grube, 1866) accepted as Perinereis vallata (Grube, 1857) (additional source)
Perinereis cultrifera (Grube, 1840) (additional source)
Pista fasciata (Grube, 1869) (additional source)
Platynereis agassizi (Ehlers, 1868) accepted as Platynereis bicanaliculata (Baird, 1863) (additional source)
Polynoe (Lepidonotus) gymnonotus Marenzeller, 1879 accepted as Hermilepidonotus helotypus (Grube, 1877) (source of synonymy)
Polynoe ijimai Izuka, 1912 accepted as Hermilepidonotus helotypus (Grube, 1877) (source of synonymy)
Potamilla myriops Marenzeller, 1884 accepted as Pseudopotamilla myriops (Marenzeller, 1884) (additional source)
Sabella aulaconota Marenzeller, 1884 accepted as Parasabella aulaconota (Marenzeller, 1884) (additional source)
Spirobranchus giganteus (Pallas, 1766) (additional source)
Sternaspis scutata (Ranzani, 1817) (additional source)
Stylarioides plumosa (O.F. Müller, 1776) accepted as Pherusa plumosa (Müller, 1776) (additional source)
Syllis fasciata Malmgren, 1867 (additional source)
Thelepus setosus (Quatrefages, 1866) (additional source)
Travisia pupa Moore, 1906 (additional source)