Aglaophamus circinata (Verrill in Smith & Harger, 1874) (new combination reference)
Aglaophamus dicirris Hartman, 1945 accepted as Aglaophamus verrilli (McIntosh, 1885) (additional source)
Alentiana aurantiaca (Verrill, 1885) (additional source)
Amblyosyllis finmarchica (Malmgren, 1867) (additional source)
Anaitides maculata (Linnaeus, 1767) accepted as Phyllodoce maculata (Linnaeus, 1767) (additional source)
Aphrodita hastata Moore, 1905 (identification resource)
Apistobranchus typicus (Webster & Benedict, 1887) (additional source)
Dysponetus pygmaeus Levinsen, 1879 (source of synonymy)
Enipo canadensis (McIntosh, 1874) (identification resource)
Enipo gracilis Verrill, 1874 (basis of record)
Eteone lactea Claparède, 1868 accepted as Hypereteone lactea (Claparède, 1868) (source of synonymy)
Eteone longa (Fabricius, 1780) (source of synonymy)
Eulalia bilineata (Johnston, 1840) (source of synonymy)
Eulalia dubia Webster & Benedict, 1884 (basis of record)
Eulalia viridis (Linnaeus, 1767) (additional source)
Eumida sanguinea (Örsted, 1843) (source of synonymy)
Eunice norvegica (Linnaeus, 1767) (source of synonymy)
Euphrosine armadillo M. Sars, 1851 (additional source)
Euphrosine borealis Örsted, 1842 (additional source)
Eusyllis blomstrandi Malmgren, 1867 (source of synonymy)
Eusyllis fragilis (Webster, 1879) (additional source)
Exogone verugera (Claparède, 1868) (additional source)
Gattyana cirrhosa (Pallas, 1766) (redescription)
Harmothoe fragilis Moore, 1910 (additional source)
Harmothoe imbricata (Linnaeus, 1767) (additional source)
Laetmonice filicornis Kinberg, 1856 (additional source)
Lepidametria commensalis Webster, 1879 (redescription)
Lumbrineris Blainville, 1828 (taxonomy source)
Lumbrineris fragilis (O.F. Müller, 1776) accepted as Scoletoma fragilis (O.F. Müller, 1776) (source of synonymy)
Marphysa acicularum Webster, 1884 (source of synonymy)
Marphysa sanguinea (Montagu, 1813) (additional source)
Microphthalmus sczelkowii Mecznikow, 1865 (taxonomy source)
Mystides viridis Webster & Benedict, 1887 (basis of record)
Nephtys incisa Malmgren, 1865 (additional source)
Nephtys paradoxa Malm, 1874 (additional source)
Nevaya McIntosh, 1911 accepted as Trochochaeta Levinsen, 1884 (source of synonymy)
Odontosyllis fulgurans (Audouin & Milne Edwards, 1833) (source of synonymy)
Orbinia (Phylo) norvegica (M. Sars in G.O. Sars, 1872) accepted as Phylo norvegica (M. Sars in G.O. Sars, 1872) (additional source)
Paralacydonia Fauvel, 1913 (taxonomy source)
Paralacydoniidae Pettibone, 1963 (original description)
Paranaitis speciosa (Webster, 1879) (additional source)
Parapionosyllis longicirrata (Webster & Benedict, 1884) (additional source)
Phyllodoce arenae Webster, 1879 (source of synonymy)
Phyllodoce catenula Verrill, 1873 (source of synonymy)
Phyllodoce gracilis Kinberg, 1866 (source of synonymy)
Sphaerodorum gracilis (Rathke, 1843) (source of synonymy)
Sphaerosyllis brevifrons Webster & Benedict, 1884 (source of synonymy)
Sphaerosyllis erinaceus Claparède, 1863 accepted as Erinaceusyllis erinaceus (Claparède, 1863) (additional source)
Sphaerosyllis longicauda Webster & Benedict, 1887 accepted as Prosphaerosyllis longicauda (Webster & Benedict, 1887) (source of synonymy)
Sphaerosyllis perkinsi Riser, 1991 (additional source)
Spinther citrinus (Stimpson, 1853) (taxonomy source)
Sthenelais gracilis Verrill, 1879 (source of synonymy)
Sthenelais limicola (Ehlers, 1864) (additional source)
Streptosyllis varians Webster & Benedict, 1887 (additional source)
Syllides setosa Verrill, 1882 (additional source)
Syllis cornuta Rathke, 1843 (source of synonymy)
Tomopteris helgolandica Greeff, 1879 represented as Tomopteris (Johnstonella) helgolandica (Greeff, 1879) (source of synonymy)
Trochochaeta Levinsen, 1884 (taxonomy source)
Trochochaetidae Pettibone, 1963 (original description)