1. Subgenus Balcis (Vitreolina) Monterosato, 1884 accepted as Vitreolina Monterosato, 1884
   1. Species Balcis (Vitreolina) drangai Hertlein & A. M. Strong, 1951 accepted as Vitreolina drangai (Hertlein & A. M. Strong, 1951)
   2. Species Balcis (Vitreolina) titubans S. S. Berry, 1956 accepted as Vitreolina titubans (S. S. Berry, 1956) (basionym)
2. Species Balcis abreojosensis (Bartsch, 1917) accepted as Oceanida abreojosensis (Bartsch, 1917) (unaccepted combination)
3. Species Balcis acanthyllis (R. B. Watson, 1883) accepted as Melanella acanthyllis (R. B. Watson, 1883) (unaccepted > superseded combination)
4. Species Balcis acuta (G. B. Sowerby I, 1834) accepted as Hypermastus acutus (G. B. Sowerby I, 1834)
5. Species Balcis adamantina (de Folin, 1867) accepted as Melanella adamantina (de Folin, 1867)
6. Species Balcis akauni T. Habe, 1952 accepted as Eulitoma akauni (T. Habe, 1952) (unaccepted > superseded combination)
7. Species Balcis alba (da Costa, 1778) accepted as Melanella alba (da Costa, 1778) (synonym)
8. Species Balcis alertae Dell, 1956 accepted as Melanella alertae (Dell, 1956) (superseded combination)
9. Species Balcis amblia (R. B. Watson, 1883) accepted as Melanella amblia (R. B. Watson, 1883) (unaccepted > superseded combination)
10. Species Balcis astropectenicola Kuroda & Habe, 1950 accepted as Parvioris astropectenicola (Kuroda & Habe, 1950) (unaccepted > superseded combination)
11. Species Balcis atlantica (E. A. Smith, 1890) accepted as Melanella atlantica (E. A. Smith, 1890)
12. Species Balcis aupouria A. W. B. Powell, 1937 accepted as Curveulima aupouria (A. W. B. Powell, 1937) (superseded combination)
13. Species Balcis berryi (Bartsch, 1917) accepted as Melanella berryi Bartsch, 1917 (unaccepted > superseded combination)
14. Species Balcis bipartita (Mörch, 1860) accepted as Melanella bipartita (Mörch, 1859)
15. Species Balcis bollonsi A. W. B. Powell, 1937 accepted as Curveulima bollonsi (A. W. B. Powell, 1937) (superseded combination)
16. Species Balcis brunnimaculata Kay, 1979 accepted as Melanella brunnimaculata (Kay, 1979) (unaccepted > superseded combination)
17. Species Balcis bryani (Pilsbry, 1918) accepted as Melanella bryani Pilsbry, 1918 (Balcis is considered a junior synonym of Melanella)
18. Species Balcis clypeastericola T. Habe, 1976 accepted as Clypeastericola clypeastericola (T. Habe, 1976) (unaccepted > superseded combination)
19. Species Balcis compacta (P. P. Carpenter, 1864) accepted as Melanella compacta (P. P. Carpenter, 1864) (unaccepted > superseded combination)
20. Species Balcis conoidalis (G. B. Sowerby II, 1865) accepted as Melanella conoidalis (G. B. Sowerby II, 1865) (Balcis is considered a junior synonym of Melanella)
21. Species Balcis conspicua A. N, Golikov, 1985 accepted as Amamibalcis conspicua (A. N. Golikov, 1985) (unaccepted > superseded combination)
22. Species Balcis conspicuus A. N. Golikov, 1985 accepted as Balcis conspicua A. N, Golikov, 1985 accepted as Amamibalcis conspicua (A. N. Golikov, 1985) (unaccepted > incorrect grammatical agreement of specific epithet)
23. Species Balcis corintonis Hertlein & A. M. Strong, 1951 accepted as Melanella corintonis (Hertlein & A. M. Strong, 1951)
24. Species Balcis cumingii (A. Adams, 1854) accepted as Melanella cumingii (A. Adams, 1854) (unaccepted > superseded combination)
25. Species Balcis curta Warén, 1972 accepted as Bathycrinicola curta (Warén, 1972)
26. Species Balcis delmontensis A. G. Smith & M. Gordon, 1948 accepted as Eulima thersites P. P. Carpenter, 1864 accepted as Melanella thersites (P. P. Carpenter, 1864)
27. Species Balcis devians (Monterosato, 1884) accepted as Curveulima devians (Monterosato, 1884)
28. Species Balcis drangai Hertlein & A. M. Strong, 1951 accepted as Vitreolina drangai (Hertlein & A. M. Strong, 1951)
29. Species Balcis kanaka (Pilsbry, 1917) accepted as Melanella kanaka Pilsbry, 1917 (Balcis is considered a junior synonym of Melanella)
30. Species Balcis komaii Habe, 1950 accepted as Curveulima komaii (Habe, 1950) (unaccepted > superseded combination)
31. Species Balcis kuronamako T. Habe, 1952 accepted as Melanella kuronamako (T. Habe, 1952) (unaccepted > superseded combination)
32. Species Balcis kyurokusinensis Nomura & Hatai, 1940 accepted as Melanella odontoidea (A. Adams, 1861)
33. Species Balcis macrophtalmica [sic] accepted as Curveulima macrophthalmica (Warén, 1972) (misspelling)
34. Species Balcis macrophthalmica Warén, 1972 accepted as Curveulima macrophthalmica (Warén, 1972)
35. Species Balcis maoria A. W. B. Powell, 1940 accepted as Melanella maoria (A. W. B. Powell, 1940) (superseded combination)
36. Species Balcis maui Dell, 1952 accepted as Melanella maui (Dell, 1952) (superseded combination)
37. Species Balcis micans (P. P. Carpenter, 1865) accepted as Melanella micans (P. P. Carpenter, 1865)
38. Species Balcis microstoma (Brusina, 1869) accepted as Parvioris ibizenca (F. Nordsieck, 1968) (unaccepted > junior homonym, ans superseded combination)
39. Species Balcis montagui Gray, 1847 accepted as Melanella alba (da Costa, 1778)
40. Species Balcis monterosatoi (Monterosato, 1890) accepted as Melanella monterosatoi (Monterosato, 1890)
41. Species Balcis oldroydae (Bartsch, 1917) accepted as Melanella oldroydae Bartsch, 1917
42. Species Balcis otakauica Dell, 1956 accepted as Curveulima otakauica (Dell, 1956) (superseded combination)
43. Species Balcis peronellicola Kuroda & Habe, 1950 accepted as Hypermastus peronellicola (Kuroda & T. Habe, 1950) (unaccepted > superseded combination)
44. Species Balcis persimilis Kuroda & T. Habe, 1971 accepted as Melanella persimilis (Kuroda & T. Habe, 1971) (unaccepted > superseded combination)
45. Species Balcis pervegrandis A. W. B. Powell, 1940 accepted as Hypermastus bulbulus (Murdoch & Suter, 1906) (junior subjective synonym)
46. Species Balcis puhana Dell, 1956 accepted as Melanella puhana (Dell, 1956) (superseded combination)
47. Species Balcis randolphi (Vanatta, 1900) accepted as Hypermastus randolphi (Vanatta, 1900) (unaccepted > superseded combination)
48. Species Balcis shoplandi (Melvill, 1898) accepted as Parvioris shoplandi (Melvill, 1898)
49. Species Balcis soliduloides Habe, 1951 accepted as Melanella soliduloides (Habe, 1951) (unaccepted > superseded combination)
50. Species Balcis solitaria (E. A. Smith, 1915) accepted as Melanella solitaria (E. A. Smith, 1915)
51. Species Balcis subantarctica (Strebel, 1908) accepted as Melanella subantarctica (Strebel, 1908)
52. Species Balcis subcarinata (A. d'Orbigny, 1841) accepted as Eulimostraca subcarinata (A. d'Orbigny, 1841)
53. Species Balcis teramachii Habe, 1952 accepted as Melanella teramachii (Habe, 1952) (unaccepted > superseded combination)
54. Species Balcis thaanumi (Pilsbry, 1917) accepted as Eulima major G. B. Sowerby I, 1834 accepted as Melanella major (G. B. Sowerby I, 1834)
55. Species Balcis titubans S. S. Berry, 1956 accepted as Vitreolina titubans (S. S. Berry, 1956)
56. Species Balcis tumidula (Thiele, 1912) accepted as Bathycrinicola tumidula (Thiele, 1912)
57. Species Balcis yamazii Habe, 1952 accepted as Melanella yamazii (Habe, 1952) (unaccepted > superseded combination)
58. Species Balcis arcuata Leach, 1852 (uncertain > taxon inquirendum)
59. Species Balcis testacea Leach, 1852 (uncertain > taxon inquirendum)

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