1. Subgenus Sipho (Anomalisipho) Dautzenberg & H. Fischer, 1912 accepted as Anomalisipho Dautzenberg & H. Fischer, 1912 (original rank)
   1. Species Sipho (Anomalisipho) dautzenbergii Dall, 1918 accepted as Anomalisipho verkruezeni (Kobelt, 1876)
2. Subgenus Sipho (Eosipho) Thiele, 1929 accepted as Eosipho Thiele, 1929 (original rank)
3. Subgenus Sipho (Mohnia) Friele, 1879 accepted as Mohnia Friele, 1879
   1. Species Sipho (Mohnia) caelatulus A. E. Verrill, 1884 accepted as Retimohnia caelata (A. E. Verrill, 1880)
   2. Species Sipho (Mohnia) simplex A. E. Verrill, 1884 accepted as Mohnia simplex (A. E. Verrill, 1884) (unaccepted > superseded combination)
4. Subgenus Sipho (Parasipho) Dautzenberg & H. Fischer, 1912 accepted as Plicifusus Dall, 1902 (invalid: junior objective synonym of Plicifusus)
   1. Species Sipho (Parasipho) nipponicus Yokoyama, 1922 † accepted as Oenopota nipponica (Yokoyama, 1922) †
5. Subgenus Sipho (Ptychosalpinx) Gill, 1867 accepted as Ptychosalpinx Gill, 1867 (Data entry error (Marshall, Bruce).)
   1. Species Sipho (Ptychosalpinx) globulus Dall, 1889 accepted as Ptychosalpinx globulus (Dall, 1889) (Data entry error (Marshall, Bruce).)
6. Subgenus Sipho (Siphonorbis) Mörch, 1869 accepted as Colus Röding, 1798
   1. Species Sipho (Siphonorbis) lindahli Posselt & A. S. Jensen, 1898 accepted as Retimohnia glypta (A. E. Verrill, 1882)
7. Subgenus Sipho (Tritonofusus) H. Beck, 1847 accepted as Colus Röding, 1798 (unaccepted > junior subjective synonym)
   1. Species Sipho (Tritonofusus) costiferus Posselt & A. S. Jensen, 1898 accepted as Turrisipho lachesis (Mörch, 1869)
8. Subgenus Sipho (Turrisipho) Dautzenberg & H. Fischer, 1912 accepted as Turrisipho Dautzenberg & H. Fischer, 1912 (original rank)
9. Species Sipho antarctidis Pelseneer, 1903 accepted as Prosipho antarctidis (Pelseneer, 1903) (original combination)
10. Species Sipho asperulus Tate, 1888 † accepted as Penion asperula (Tate, 1888) † accepted as Ollaphon asperulus (Tate, 1888) †
11. Species Sipho astrolabiensis Strebel, 1908 accepted as Prosipho astrolabiensis (Strebel, 1908) (original combination)
12. Species Sipho brevispira Brøgger, 1900 accepted as Colus sabini (J. E. Gray, 1824)
13. Species Sipho caelatulus A. E. Verrill, 1884 accepted as Retimohnia caelata (A. E. Verrill, 1880)
14. Species Sipho chordatus Strebel, 1908 accepted as Prosipho chordatus (Strebel, 1908) (original combination)
15. Species Sipho clathratulus Cossmann, 1889 † accepted as Syphopsis clathratula (Cossmann, 1889) † (unaccepted > superseded combination)
16. Species Sipho columbelloides Cossmann, 1889 † accepted as Columbellisipho columbelloides (Cossmann, 1889) † (unaccepted > superseded combination)
17. Species Sipho costiferus Posselt & A. S. Jensen, 1898 accepted as Turrisipho lachesis (Mörch, 1869) (synonym)
18. Species Sipho crassifunis Cossmann, 1889 † accepted as Andoniopsis crassifunis (Cossmann, 1889) † (unaccepted > superseded combination)
19. Species Sipho crebrigranosus Tate, 1888 † accepted as Varicosipho crebrigranosus (Tate, 1888) † accepted as Dennantia crebrigranosa (Tate, 1888) †
20. Species Sipho dalli Friele, 1881 accepted as Mohnia dalli (Friele, 1881)
21. Species Sipho esychus (Dall, 1907) accepted as Aulacofusus esychus (Dall, 1907)
22. Species Sipho gaini E. Lamy, 1910 accepted as Belaturricula gaini (E. Lamy, 1910) (original combination)
23. Species Sipho geministriatus [sic] accepted as Retifusus latericeus (Møller, 1842) (misspelling)
24. Species Sipho geminostriatus G. Pfeffer, 1886 accepted as Retifusus latericeus (Møller, 1842)
25. Species Sipho glaber Verkrüzen, 1876 accepted as Colus gracilis (da Costa, 1778)
26. Species Sipho glyptus A. E. Verrill, 1882 accepted as Retimohnia glypta (A. E. Verrill, 1882) (unaccepted > superseded combination)
27. Species Sipho hallii Dall, 1873 accepted as Latisipho hallii (Dall, 1873) (original combination)
28. Species Sipho hebes A. E. Verrill, 1884 accepted as Retimohnia caelata (A. E. Verrill, 1880) (unaccepted > junior subjective synonym)
29. Species Sipho hispidulus A. E. Verrill, 1885 accepted as Mohnia abyssorum (P. Fischer, 1884)
30. Species Sipho infraeocaenicus Cossmann, 1889 † accepted as Parvisipho infraeocaenicus (Cossmann, 1889) † (unaccepted > superseded combination)
31. Species Sipho islandicus (Mohr, 1786) accepted as Colus islandicus (Mohr, 1786) (unaccepted > superseded combination)
32. Species Sipho jonkeri Koperberg, 1931 † accepted as Manaria koperbergae Fraussen & Stahlschmidt, 2016 † (invalid: secondary junior homonym of Lathyrus jonkeri Koperberg, 1931; Manaria koperbergae is a replacement name)
33. Species Sipho krampi Thorson, 1951 accepted as Mohnia krampi (Thorson, 1951)
34. Species Sipho labrosus Tate, 1888 † accepted as Varicosipho labrosus (Tate, 1888) † (unaccepted > superseded combination)
35. Species Sipho leptaleus A. E. Verrill, 1884 accepted as Taranis leptalea (A. E. Verrill, 1884) (unaccepted > superseded combination)
36. Species Sipho lindahli Posselt & A. S. Jensen, 1898 accepted as Retimohnia glypta (A. E. Verrill, 1882)
37. Species Sipho loustauae Cossmann, 1889 † accepted as Amplosipho loustauae (Cossmann, 1889) † (unaccepted > superseded combination)
38. Species Sipho martensi A. Krause, 1885 accepted as Anomalisipho martensi (A. Krause, 1885) (original combination)
39. Species Sipho mimeticus Tate, 1893 accepted as Austrotriton mimeticus (Tate, 1893) (unaccepted > superseded combination)
40. Species Sipho nodulosus Cossmann, 1889 † accepted as Syphopsis nodulosa (Cossmann, 1889) † (unaccepted > superseded combination)
41. Species Sipho obesiformis Yokoyama, 1920 † accepted as Colus obesiformis (Yokoyama, 1920) † (unaccepted > superseded combination)
42. Species Sipho obesus A. E. Verrill, 1884 accepted as Retimohnia caelata (A. E. Verrill, 1880) (unaccepted > junior subjective synonym)
43. Species Sipho parvus A. E. Verrill & S. Smith, 1882 accepted as Mohnia parva (A. E. Verrill & S. Smith, 1882) (unaccepted > superseded combination)
44. Species Sipho pezanti Cossmann, 1892 † accepted as Coptosipho pezanti (Cossmann, 1892) † (unaccepted > superseded combination)
45. Species Sipho plicatus A. Adams, 1864 accepted as Plicifusus kroyeri (Møller, 1842) (unaccepted > junior subjective synonym)
46. Species Sipho polysarca Cossmann, 1889 † accepted as Syphopsis polysarca (Cossmann, 1889) † (unaccepted > superseded combination)
47. Species Sipho profundicola A. E. Verrill & S. Smith, 1884 accepted as Mohnia abyssorum (P. Fischer, 1884) (unaccepted > junior subjective synonym)
48. Species Sipho pubescens A. E. Verrill, 1882 accepted as Colus pubescens (A. E. Verrill, 1882) (original combination)
49. Species Sipho pygmaeus (A. Gould, 1841) accepted as Colus pygmaeus (A. Gould, 1841) (unaccepted > superseded combination)
50. Species Sipho raristria Cossmann, 1889 † accepted as Syphopsis raristria (Cossmann, 1889) † (unaccepted > superseded combination)
51. Species Sipho sarsi G. O. Sars, 1878 accepted as Turrisipho moebii (Dunker & Metzger, 1875) (junior synonym)
52. Species Sipho simplex A. E. Verrill, 1884 accepted as Mohnia simplex (A. E. Verrill, 1884) (unaccepted > superseded combination)
53. Species Sipho stimpsonii (Mörch, 1868) accepted as Colus stimpsoni (Mörch, 1868)
54. Species Sipho tatei Cossmann, 1898 † accepted as Sipho asperulus Tate, 1888 † accepted as Penion asperula (Tate, 1888) † accepted as Ollaphon asperulus (Tate, 1888) † (unnecessary replacement name)
55. Species Sipho tenuiplicatus Cossmann, 1889 † accepted as Syphopsis tenuiplicata (Cossmann, 1889) † (unaccepted > superseded combination)
56. Species Sipho tortuosus (Reeve, 1855) accepted as Colus holboelli [sic] accepted as Colus holboellii (Møller, 1842)
57. Species Sipho turgidulus (Friele, 1877) accepted as Colus turgidulus (Friele, 1877)
58. Species Sipho turritus (M. Sars, 1859) accepted as Colus jeffreysianus (P. Fischer, 1868)
59. Species Sipho undulatus Friele, 1881 accepted as Turrisipho lachesis (Mörch, 1869)
60. Species Sipho valdeconicus Cossmann, 1896 † accepted as Parvisipho valdeconicus (Cossmann, 1896) † (unaccepted > superseded combination)
61. Species Sipho venemai Koperberg, 1931 accepted as Manaria venemai (Koperberg, 1931) † (original combination)
62. Species Sipho verkruezeni Kobelt, 1876 accepted as Anomalisipho verkruezeni (Kobelt, 1876) (original combination)
63. Species Sipho angustus E. A. Smith, 1880 (uncertain > taxon inquirendum)
64. Species Sipho aurorae Shikama, 1977 (uncertain > taxon inquirendum)

 The webpage text is licensed under a Creative Commons Attribution 4.0 License