1. Subgenus Cionella (Azeka) J. Fleming, 1828 accepted as Azeca J. Fleming, 1828 (misspelling; considered a separate genus)
   1. Species Cionella (Azeka) tridentiformis Gottschick, 1911 † accepted as Azeca tridentiformis (Gottschick, 1911) † (unaccepted > superseded combination)
2. Subgenus Cionella (Caecilianella) Bourguignat, 1856 accepted as Cecilioides A. Férussac, 1814
   1. Species Cionella (Caecilianella) gattoi Westerlund, 1892 accepted as Cecilioides acicula (O. F. Müller, 1774)
   2. Species Cionella (Caecilianella) melitensis Westerlund, 1892 accepted as Cecilioides acicula (O. F. Müller, 1774)
   3. Species Cionella (Caecilianella) pollonerae Westerlund, 1892 accepted as Cecilioides acicula (O. F. Müller, 1774)
3. Subgenus Cionella (Ferussacia) Risso, 1826 accepted as Ferussacia Risso, 1826 (unaccepted combination)
   1. Species Cionella (Ferussacia) lubrica (O. F. Müller, 1774) accepted as Cochlicopa lubrica (O. F. Müller, 1774) (unaccepted combination)
   2. Species Cionella (Ferussacia) pulchella Mousson, 1873 accepted as Cochlicopa lubricella (Porro, 1838) (junior synonym)
   3. Species Cionella (Ferussacia) agilis Westerlund, 1898 (uncertain > unassessed)
   4. Species Cionella (Ferussacia) virginea Westerlund, 1892 (uncertain > taxon inquirendum)
4. Subgenus Cionella (Glessula) E. von Martens, 1860 accepted as Glessula E. von Martens, 1860 (original rank)
   1. Species Cionella (Glessula) orophila (Reeve, 1849) accepted as Glessula orophila (Reeve, 1849) (unaccepted > superseded combination)
5. Subgenus Cionella (Zua) W. Turton, 1831 accepted as Cochlicopa A. Férussac, 1821
   1. Species Cionella (Zua) lubrica (O.F. Müller, 1774) accepted as Cochlicopa lubrica (O. F. Müller, 1774) (unaccepted > superseded combination)
   2. Species Cionella (Zua) morseana W. Doherty, 1878 accepted as Cochlicopa morseana (W. Doherty, 1878) (original combination)
6. Species Cionella acicula (O. F. Müller, 1774) accepted as Cecilioides acicula (O. F. Müller, 1774) (unaccepted > superseded combination)
7. Species Cionella attenuata Mousson, 1872 accepted as Ferussacia attenuata (Mousson, 1872) (original name)
8. Species Cionella columna Clessin, 1875 accepted as Cochlicopa lubrica (O. F. Müller, 1774) (junior synonym)
9. Species Cionella disparata Westerlund, 1892 accepted as Hohenwartiana disparata (Westerlund, 1892) (original combination)
10. Species Cionella exigua K. Miller, 1907 † accepted as Cochlicopa milleri Wenz, 1919 † (junior homonym of Bulimus (Cochlicopa) subcylindricus var. exigua Moquin-Tandon, 1856)
11. Species Cionella formicina F. Sandberger, 1871 † accepted as Cochlicopa formicina (F. Sandberger, 1871) † (unaccepted > superseded combination)
12. Species Cionella fritschi Mousson, 1872 accepted as Ferussacia fritschi (Mousson, 1872) (original combination)
13. Species Cionella gloynei Gibbons, 1879 accepted as Neosubulina gloynii (J. S. Gibbons, 1879) (unaccepted > superseded combination)
14. Species Cionella gloynii J. S. Gibbons, 1879 accepted as Neosubulina gloynii (J. S. Gibbons, 1879) (original combination)
15. Species Cionella gokweana O. Boettger, 1870 accepted as Cecilioides gokweana (O. Boettger, 1870) (unaccepted > superseded combination)
16. Species Cionella lamellata (Potiez & Michaud, 1838) accepted as Leptinaria unilamellata (A. d'Orbigny, 1838) (unaccepted combination; junior synonym)
17. Species Cionella lanzarotensis Mousson, 1872 accepted as Ferussacia (Ferussacia) lanzarotensis (Mousson, 1872) represented as Ferussacia lanzarotensis (Mousson, 1872) (original combination)
18. Species Cionella lubrica (O. F. Müller, 1774) accepted as Cochlicopa lubrica (O. F. Müller, 1774) (unaccepted > superseded combination)
19. Species Cionella macrostoma O. Boettger, 1875 † accepted as Cochlicopa macrostoma (O. Boettger, 1875) † (unaccepted > superseded combination)
20. Species Cionella maroccana Mousson, 1873 accepted as Hypnophila maroccana (Mousson, 1873) (original combination)
21. Species Cionella ovampoensis Melvill & Ponsonby, 1892 accepted as Cecilioides advena (Ancey, 1888) (unaccepted > junior subjective synonym)
22. Species Cionella pfeifferi Weinland, 1874 accepted as Cochlicopa lubrica (O. F. Müller, 1774) (junior synonym)
23. Species Cionella philippinensis C. Semper, 1874 accepted as Geostilbia philippinensis (C. Semper, 1874) (original combination)
24. Species Cionella podolica Łomnicki, 1886 † accepted as Cochlicopa subrimata podolica (Łomnicki, 1886) † (superseded rank and combination)
25. Species Cionella pulchella Mousson, 1873 accepted as Cochlicopa lubricella (Porro, 1838) (junior synonym)
26. Species Cionella subcylindrica W. G. Binney, 1869 accepted as Cochlicopa lubrica (O. F. Müller, 1774) (unaccepted > junior subjective synonym)
27. Species Cionella sumatrana E. von Martens, 1864 accepted as Glessula sumatrana (E. von Martens, 1864) (unaccepted > superseded combination)
28. Species Cionella valida Mousson, 1872 accepted as Ferussacia valida (Mousson, 1872) (unaccepted > superseded combination)

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