1. Species Serpulorbis anguillinus Deshayes, 1861 † accepted as Vermicularia anguillina (Deshayes, 1861) † (unaccepted > superseded combination)
2. Species Serpulorbis angulatus (Rousseau, 1844) accepted as Vermetus angulatus Rousseau, 1844 accepted as Eualetes tulipa (Rousseau, 1843) (superseded combination incorrectly attributed to Chenu)
3. Species Serpulorbis aotearoicus J. E. Morton, 1951 accepted as Thylacodes aotearoicus (J. E. Morton, 1951) (superseded combination)
4. Species Serpulorbis arenarius (Linnaeus, 1758) accepted as Thylacodes arenarius (Linnaeus, 1758)
5. Species Serpulorbis aureus Hughes, 1978 accepted as Thylacodes aureus (Hughes, 1978)
6. Species Serpulorbis birugosus Weisbord, 1962 accepted as Hydroides bispinosus Bush, 1910 accepted as Hydroides bispinosa Bush, 1910 (original combination)
7. Species Serpulorbis cancellatus Deshayes, 1861 † accepted as Thylacodes cancellatus (Deshayes, 1861) † (unaccepted > superseded combination)
8. Species Serpulorbis catella Weisbord, 1962 accepted as Pomatoceros minutus Rioja, 1941 accepted as Spirobranchus minutus (Rioja, 1941) (original combination and spelling)
9. Species Serpulorbis catellus Weisbord, 1962 accepted as Pomatoceros minutus Rioja, 1941 accepted as Spirobranchus minutus (Rioja, 1941)
10. Species Serpulorbis clathratus Deshayes, 1861 † accepted as Thylacodes clathratus (Deshayes, 1861) † (unaccepted > superseded combination)
11. Species Serpulorbis colubrinus (Röding, 1798) accepted as Thylacodes colubrinus (Röding, 1798)
12. Species Serpulorbis cristatus Deshayes, 1861 † accepted as Thylacodes cristatus (Deshayes, 1861) † (unaccepted > superseded combination)
13. Species Serpulorbis daidai Scheuwimmer & Nishiwaki, 1982 accepted as Thylacodes daidai (Scheuwimmer & Nishiwaki, 1982) (original combination)
14. Species Serpulorbis decussatus (Gmelin, 1791) accepted as Thylacodes decussatus (Gmelin, 1791) (unaccepted > superseded combination)
15. Species Serpulorbis dentiferus (Lamarck, 1818) accepted as Thylacodes dentiferus (Lamarck, 1818)
16. Species Serpulorbis effusus (Valenciennes, 1844) accepted as Vermetus effusus Valenciennes, 1844 accepted as Eualetes tulipa (Rousseau, 1843) (superseded combination incorrectly attributed to Chenu)
17. Species Serpulorbis eruciformis (Mörch, 1862) accepted as Thylacodes eruciformis Mörch, 1862
18. Species Serpulorbis granifera (Say, 1824) † accepted as Thylacodes granifera (Say, 1824) † (unaccepted > superseded combination)
19. Species Serpulorbis hadfieldi W. C. Kelly, 2007 accepted as Thylacodes hadfieldi (W. C. Kelly, 2007) (original combination)
20. Species Serpulorbis hormathos Stilwell & Zinsmeister, 1992 † accepted as Thylacodes hormathos (Stilwell & Zinsmeister, 1992) † (unaccepted > superseded combination)
21. Species Serpulorbis imbricatus (Dunker, 1860) accepted as Thylacodes adamsii (Mörch, 1859) (junior homonym; subjective synonym)
22. Species Serpulorbis inopertus (Leuckart, 1830) accepted as Thylacodes inopertus (Leuckart, 1830) (superseded combination incorrectly attributed to Rüppell & Leuckart)
23. Species Serpulorbis lamarckii Vaillant, 1871 accepted as Thylacodes lamarckii (Vaillant, 1871) (original combination)
24. Species Serpulorbis laxatus Deshayes, 1861 † accepted as Thylacodes laxatus (Deshayes, 1861) † (unaccepted > superseded combination)
25. Species Serpulorbis lornensis Marwick, 1926 † accepted as Thylacodes lornensis (Marwick, 1926) † (superseded combination)
26. Species Serpulorbis margaritaceus (Rousseau, 1844) accepted as Thylacodes margaritaceus (Rousseau, 1844) (superseded combination incorrectly attributed to Chenu)
27. Species Serpulorbis medusae (Pilsbry, 1891) accepted as Thylacodes medusae Pilsbry, 1891
28. Species Serpulorbis morchi Deshayes, 1861 † accepted as Thylacodes morchi (Deshayes, 1861) † (unaccepted > superseded combination)
29. Species Serpulorbis multiclavus Garvie, 1996 † accepted as Thylacodes multiclavus (Garvie, 1996) † (unaccepted > superseded combination)
30. Species Serpulorbis natalensis (Mörch, 1862) accepted as Thylacodes natalensis Mörch, 1862
31. Species Serpulorbis newtoni Glibert, 1962 † accepted as Thylacodes newtoni (Glibert, 1962) † (unaccepted > superseded combination)
32. Species Serpulorbis nodosorugosus (Lischke, 1869) accepted as Thylacodes nodosorugosus (Lischke, 1869)
33. Species Serpulorbis novaehollandiae (Rousseau, 1843) accepted as Thylacodes novaehollandiae (Rousseau, 1843) (superseded combination incorrectly attributed to Chenu)
34. Species Serpulorbis ophiodes (P. Marshall & Murdoch, 1921) † accepted as Thylacodes ophiodes (P. Marshall & Murdoch, 1921) † (superseded combination)
35. Species Serpulorbis oryzata (Mörch, 1862) accepted as Thylacodes oryzatus Mörch, 1862
36. Species Serpulorbis panamensis (Rousseau, 1844) accepted as Vermetus panamensis Rousseau, 1844 accepted as Eualetes tulipa (Rousseau, 1843) (superseded combination incorrectly attributed to Chenu)
37. Species Serpulorbis peronii (Rousseau, 1844) accepted as Thylacodes peronii (Rousseau, 1844) (superseded combination incorrectly attributed to Chenu)
38. Species Serpulorbis polygonus Deshayes, 1861 † accepted as Vermicularia polygona (Deshayes, 1861) † (unaccepted > superseded combination)
39. Species Serpulorbis polyphragma Sasso, 1827 accepted as Thylacodes arenarius (Linnaeus, 1758)
40. Species Serpulorbis porrectus Deshayes, 1861 † accepted as Vermicularia porrecta (Deshayes, 1861) † (unaccepted > superseded combination)
41. Species Serpulorbis riisei (Mörch, 1862) accepted as Thylacodes riisei Mörch, 1862
42. Species Serpulorbis semipedalis Deshayes, 1861 † accepted as Thylacodes semipedalis (Deshayes, 1861) † (unaccepted > superseded combination)
43. Species Serpulorbis serpuloides Deshayes, 1861 † accepted as Vermicularia serpuloides (Deshayes, 1861) † (unaccepted > superseded combination)
44. Species Serpulorbis sipho (Lamarck, 1818) accepted as Thylacodes sipho (Lamarck, 1818)
45. Species Serpulorbis squamiger (P. P. Carpenter, 1857) accepted as Thylacodes squamigerus (P. P. Carpenter, 1857)
46. Species Serpulorbis squamolineatus Petuch, 2002 accepted as Thylacodes squamolineatus (Petuch, 2002) (original combination)
47. Species Serpulorbis strictus Deshayes, 1861 † accepted as Thylacodes strictus (Deshayes, 1861) † (unaccepted > superseded combination)
48. Species Serpulorbis sutilis (Mörch, 1862) accepted as Thylacodes sutilis (Mörch, 1862)
49. Species Serpulorbis trimeresurus Shikama & Horikoshi, 1963 accepted as Thylacodes trimeresurus (Shikama & Horikoshi, 1963) (original binomen)
50. Species Serpulorbis validus Kuroda & Habe, 1952 (unaccepted > nomen nudum)
51. Species Serpulorbis variabilis M. G. Hadfield & Kay, 1972 accepted as Thylacodes variabilis (M. G. Hadfield & Kay, 1972) (unaccepted > superseded combination)
52. Species Serpulorbis varidus Okutani & Habe, 1975 accepted as Thylacodes varidus (Okutani & Habe, 1975) (original binomen)
53. Species Serpulorbis xenophorus Habe, 1961 accepted as Thylacodes xenophorus (Habe, 1961) (original combination)
54. Species Serpulorbis yokojima Shikama, 1977 accepted as Thylacodes yokojima (Shikama, 1977) (original combination)
55. Species Serpulorbis zelandicus (Quoy & Gaimard, 1834) accepted as Thylacodes zelandicus (Quoy & Gaimard, 1834) (superseded combination)
56. Species Serpulorbis papulosa (Guppy, 1866) † (uncertain > unassessed)

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