1. Genus Alcyonosyllis Glasby & Watson, 2001
2. Genus Branchiosyllis Ehlers, 1887
3. Genus Dentatisyllis Perkins, 1981
4. Genus Eurysyllis Ehlers, 1864
5. Genus Haplosyllis Langerhans, 1879
6. Genus Inermosyllis San Martín, 2003
7. Genus Karroonsyllis San Martín & López, 2003
8. Genus Megasyllis San Martín, Hutchings & Aguado, 2008
9. Genus Opisthosyllis Langerhans, 1879
10. Genus Paralcyonosyllis Lattig, Martin, Álvarez-Campos & San Martín in Álvarez-Campos et al., 2025
11. Genus Parapterosyllis Hartmann-Schröder, 1960
12. Genus Parasphaerosyllis Monro, 1937
13. Genus Paratyposyllis Hartmann-Schröder, 1962
14. Genus Plakosyllis Hartmann-Schröder, 1956
15. Genus Ramisyllis Glasby, Schroeder & Aguado, 2012
16. Genus Rhopalosyllis Augener, 1913
17. Genus Syllis Lamarck, 1818
18. Genus Tetrapalpia San Martín, Hutchings & Aguado, 2008
19. Genus Trypanedenta Imajima & Hartman, 1964
20. Genus Trypanobia Imajima & Hartman, 1964
21. Genus Trypanospina Álvarez-Campos, Taboada, San Martín, Leiva & Riesgo, 2018
22. Genus Trypanosyllis Claparède, 1864
23. Genus Xenosyllis Marion & Bobretzky, 1875
24. Genus Aporosyllis Quatrefages, 1866 accepted as Syllis Lamarck, 1818 (subjective synonym)
25. Genus Branquiosyllis [auctt. misspelling for Branchiosyllis] accepted as Branchiosyllis Ehlers, 1887 (unaccepted > misspelling - incorrect subsequent spelling)
26. Genus Chaetosyllis Malmgren, 1867 accepted as Syllis Lamarck, 1818 (subjective synonym)
27. Genus Ehlersia Quatrefages, 1866 accepted as Syllis Lamarck, 1818 (subjective synonym)
28. Genus Eurysillis Ehlers, 1864 accepted as Eurysyllis Ehlers, 1864 (lapsus calami)
29. Genus Geminosyllis Imajima, 1966 accepted as Haplosyllis Langerhans, 1879 (superfluous replacement name, subjective synonym)
30. Genus Gnathosyllis Schmarda, 1861 accepted as Syllis Lamarck, 1818 (subjective synonym)
31. Genus Hemisyllis Verrill, 1900 accepted as Haplosyllis Langerhans, 1879 (subjective synonym)
32. Genus Ioda [auctt.] accepted as Ioida Johnston, 1839 accepted as Syllis Lamarck, 1818 (lapsus calami)
33. Genus Ioida Johnston, 1839 accepted as Syllis Lamarck, 1818 (subjective synonym)
34. Genus Langerhansia Czerniavsky, 1881 accepted as Syllis Lamarck, 1818 (subjective synonym)
35. Genus Polymastus Claparède, 1864 accepted as Eurysyllis Ehlers, 1864
36. Genus Tetraglena Quatrefages, 1866 accepted as Trypanosyllis Claparède, 1864
37. Genus Tetraglene Grube, 1863 accepted as Pseudosyllis Grube, 1863 (unaccepted > junior subjective synonym, simultaneous publication but Pseudosyllis has been preferred subsequently)
38. Genus Thoe Kinberg, 1866 accepted as Syllis Lamarck, 1818 (subjective synonym)
39. Genus Trichosyllis Schmarda, 1861 accepted as Syllis Lamarck, 1818 (subjective synonym)
40. Genus Trypanoseta Imajima & Hartman, 1964 accepted as Haplosyllis Langerhans, 1879 (subjective synonym)
41. Genus Typosyllis Langerhans, 1879 accepted as Syllis Lamarck, 1818 (subjective synonym)

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