Aonides paucibranchiata Southern, 1914 (original description)
Autolytus edwarsi Saint Joseph, 1887 accepted as Myrianida edwarsi (Saint Joseph, 1887) (additional source)
Autolytus longeferiens Saint Joseph, 1887 accepted as Epigamia alexandri (Malmgren, 1867) (additional source)
Autolytus rubropunctatus (Grube, 1860) accepted as Myrianida rubropunctata (Grube, 1860) (additional source)
Chaetozone zetlandica McIntosh, 1911 (redescription)
Chone filicaudata Southern, 1914 (original description)
Eteone foliosa Quatrefages, 1866 accepted as Hypereteone foliosa (Quatrefages, 1865) (additional source)
Euchone rosea Langerhans, 1884 (additional source)
Eusyllis blomstrandi Malmgren, 1867 (source of synonymy)
Gattyana cirrosa [auctt. misspelling] accepted as Gattyana cirrhosa (Pallas, 1766) (additional source)
Halosydna gelatinosa (Sars, 1835) accepted as Alentia gelatinosa (M. Sars, 1835) (additional source)
Harmothoe imbricata (Linnaeus, 1767) (additional source)
Harmothoe lunulata (Delle Chiaje, 1830) accepted as Malmgrenia lunulata (Delle Chiaje, 1830) (additional source)
Harmothoe spinifera (Ehlers, 1864) (additional source)
Harmothoe zetlandica McIntosh, 1876 accepted as Malmgrenia ljungmani (Malmgren, 1867) (additional source)
Lepidonotus clava (Montagu, 1808) (additional source)
Lepidonotus squamatus (Linnaeus, 1758) (additional source)
Marphysa fallax Marion & Bobretzky, 1875 accepted as Paucibranchia fallax (Marion & Bobretzky, 1875) (additional source)
Microphthalmus Mecznikow, 1865 (additional source)
Microphthalmus sczelkowii Mecznikow, 1865 (additional source)
Myrianida pinnigera (Montagu, 1808) (additional source)
Nerilla antennata Schmidt, 1848 (additional source)
Nicomache maculata Arwidsson, 1911 (additional source)
Odontosyllis ctenostoma Claparède, 1868 (additional source)
Odontosyllis gibba Claparède, 1863 (additional source)
Ophiodromus flexuosus (Delle Chiaje, 1827) accepted as Oxydromus flexuosus (Delle Chiaje, 1827) (additional source)
Opisthodonta Langerhans, 1879 (additional source)
Opisthodonta pterochaeta Southern, 1914 accepted as Streptodonta pterochaeta (Southern, 1914) (original description)
Paranaitis Southern, 1914 (original description)
Paranaitis kosteriensis (Malmgren, 1867) (additional source)
Paranaitis wahlbergi (Malmgren, 1865) (new combination reference)
Pholoe tuberculata Southern, 1914 accepted as Pholoe baltica Örsted, 1843 (original description)
Pionosyllis lamelligera Saint Joseph, 1887 accepted as Synmerosyllis lamelligera (Saint-Joseph, 1887) (additional source)
Pionosyllis pulligera (Krohn, 1852) accepted as Nudisyllis pulligera (Krohn, 1852) (basis of record)
Pionosyllis serrata Southern, 1914 accepted as Nudisyllis pulligera (Krohn, 1852) (original description)
Pisionidae Ehlers, 1901 accepted as Pisioninae Ehlers, 1901 (additional source)
Polygordius appendiculatus Fraipont, 1887 (additional source)
Polygordius lacteus Schneider, 1868 (additional source)
Sphaerosyllis bulbosa Southern, 1914 (original description)
Sphaerosyllis erinaceus Claparède, 1863 accepted as Erinaceusyllis erinaceus (Claparède, 1863) (additional source)
Sphaerosyllis hystrix Claparède, 1863 (additional source)
Spio martinensis Mesnil, 1896 (additional source)
Sthenelais zetlandica McIntosh, 1876 accepted as Fimbriosthenelais zetlandica (McIntosh, 1876) (additional source)
Streptosyllis Webster & Benedict, 1884 (redescription)
Streptosyllis bidentata Southern, 1914 (original description)
Streptosyllis websteri Southern, 1914 (original description)
Trypanosyllis coeliaca Claparède, 1868 accepted as Pseudosyllis brevipennis Grube, 1863 (additional source)
Trypanosyllis zebra (Grube, 1860) (additional source)