1. Species Tonicia arnheimi Dall, 1903
2. Species Tonicia calbucensis Plate, 1898
3. Species Tonicia chilensis (Frembly, 1827)
4. Species Tonicia disalvoi (Dell'Angelo, Raines & Bonfitto, 2004)
5. Species Tonicia disjuncta (Frembly, 1827)
6. Species Tonicia forbesii P. P. Carpenter, 1857
7. Species Tonicia fremblyana Kaas, 1957
8. Species Tonicia horniana Rochebrune, 1889
9. Species Tonicia lebruni Rochebrune, 1884
10. Species Tonicia schrammi (Shuttleworth, 1856)
11. Species Tonicia swainsoni (G. B. Sowerby I, 1832)
12. Subgenus Tonicia (Lucilina) Dall, 1882 accepted as Lucilina Dall, 1882
    1. Species Tonicia (Lucilina) carnosa Kaas, 1979 accepted as Lucilina carnosa (Kaas, 1979) (unaccepted > superseded combination)
    2. Species Tonicia (Lucilina) ceylonica Leloup, 1960 accepted as Lucilina ceylonica (Leloup, 1936) (unaccepted > superseded combination)
    3. Species Tonicia (Lucilina) dupuisi Leloup, 1973 accepted as Lucilina dupuisi (Leloup, 1973) (unaccepted > superseded combination)
    4. Species Tonicia (Lucilina) mariae Kaas, Van Belle & Strack, 2006 accepted as Lucilina mariae (Kaas, Van Belle & Strack, 2006) (original combination)
    5. Species Tonicia (Lucilina) pacifica Kaas & Van Belle, 1998 accepted as Lucilina pacifica (Kaas & Van Belle, 1998) (unaccepted > superseded combination)
    6. Species Tonicia (Lucilina) sueziensis (Reeve, 1847) accepted as Lucilina sueziensis (Reeve, 1847)
13. Subgenus Tonicia (Onithoplax) Thiele, 1909 accepted as Onithochiton J. E. Gray, 1847 (junior subjective synonym)
14. Species Tonicia argyrosticta (R. A. Philippi, 1845) accepted as Tonicia lebruni Rochebrune, 1884 (unaccepted > junior subjective synonym, uncertain synonym)
15. Species Tonicia atrata (G. B. Sowerby II, 1839) accepted as Tonicia chilensis (Frembly, 1827) (unaccepted > junior subjective synonym)
16. Species Tonicia atrata (G. B. Sowerby II, 1840) sensu F. W. Hutton, 1880 accepted as Plaxiphora (Plaxiphora) aurata (Spalowsky, 1795) represented as Plaxiphora aurata (Spalowsky, 1795) (misidentification)
17. Species Tonicia boetica Pilsbry, 1893 accepted as Tonicia atrata (G. B. Sowerby II, 1839) accepted as Tonicia chilensis (Frembly, 1827)
18. Species Tonicia brandtii (Middendorff, 1847) accepted as Schizoplax brandtii (Middendorff, 1847) (unaccepted > superseded combination)
19. Species Tonicia carpenteri Angas, 1867 accepted as Lucilina carpenteri (Angas, 1867) (unaccepted > superseded combination)
20. Species Tonicia ceylonica Leloup, 1936 accepted as Lucilina ceylonica (Leloup, 1936) (unaccepted > superseded combination)
21. Species Tonicia confossa (A. Gould, 1846) accepted as Lucilina lamellosa (Quoy & Gaimard, 1835) (junior synonym)
22. Species Tonicia corticata F. W. Hutton, 1872 accepted as Plaxiphora biramosa (Quoy & Gaimard, 1835) (junior subjective synonym)
23. Species Tonicia costata Leloup MS accepted as Lucilina sueziensis (Reeve, 1847) (nomen nudum, later considered a synonym)
24. Species Tonicia cuneata Suter, 1908 accepted as Pseudotonicia cuneata (Suter, 1908) (superseded combination)
25. Species Tonicia dilecta ; mult. auct. accepted as Lucilina sueziensis (Reeve, 1847) (Red Sea record is L. sueziensis; but in SW Indian Ocean other species may be involved)
26. Species Tonicia dupuisi Leloup, 1973 accepted as Lucilina dupuisi (Leloup, 1973) (unaccepted > superseded combination)
27. Species Tonicia elegans (Frembly, 1827) accepted as Tonicia chilensis (Frembly, 1827)
28. Species Tonicia fastigiata (G. B. Sowerby II, 1840) accepted as Tonicia atrata (G. B. Sowerby II, 1839) accepted as Tonicia chilensis (Frembly, 1827)
29. Species Tonicia fontainei Rochebrune, 1882 accepted as Ischnochiton punctulatissimus (G. B. Sowerby I, 1832)
30. Species Tonicia gambiensis Rochebrune, 1881 accepted as Chaetopleura (Chaetopleura) gambiensis (Rochebrune, 1881) represented as Chaetopleura gambiensis (Rochebrune, 1881) (original combination)
31. Species Tonicia gaudichaudi Rochebrune, 1884 accepted as Ischnochiton punctulatissimus (G. B. Sowerby I, 1832)
32. Species Tonicia greyi Filhol, 1880 accepted as Ischnochiton circumvallatus (Reeve, 1847) (junior subjective synonym)
33. Species Tonicia hullianus Torr, 1911 accepted as Lucilina hulliana (Torr, 1911) (original combination)
34. Species Tonicia indica Leloup, 1981 accepted as Tonicia (Lucilina) carnosa Kaas, 1979 accepted as Lucilina carnosa (Kaas, 1979) (unaccepted > junior subjective synonym)
35. Species Tonicia jugosulcata Pilsbry, 1893 accepted as Lucilina truncata (G. B. Sowerby II, 1841)
36. Species Tonicia lineata (W. Wood, 1815) accepted as Tonicella lineata (W. Wood, 1815) (unaccepted > superseded combination)
37. Species Tonicia marmorea (O. Fabricius, 1780) accepted as Tonicella marmorea (O. Fabricius, 1780) (unaccepted > superseded combination)
38. Species Tonicia martiali Rochebrune, 1889 accepted as Nuttallochiton martiali (Rochebrune, 1889) (superseded combination)
39. Species Tonicia mixta Dall, 1919 accepted as Chaetopleura (Pallochiton) lanuginosa mixta (Dall, 1919) represented as Chaetopleura lanuginosa mixta (Dall, 1919) (original combination)
40. Species Tonicia novemrugata Bergenhayn, 1930 accepted as Lucilina novemrugata (Bergenhayn, 1930) (original combination)
41. Species Tonicia pectinoides Sykes, 1903 accepted as Lucilina pectinoides (Sykes, 1903) (original combination)
42. Species Tonicia perligera (Thiele, 1909) accepted as Lucilina perligera Thiele, 1909 (incorrect placement)
43. Species Tonicia polyomma Bergenhayn, 1932 accepted as Lucilina polyomma (Bergenhayn, 1932) (original combination)
44. Species Tonicia prashadi Leloup, 1937 accepted as Tonicia pectinoides Sykes, 1903 accepted as Lucilina pectinoides (Sykes, 1903) (junior subjective synonym)
45. Species Tonicia ptygmata Rochebrune, 1884 accepted as Lucilina sueziensis (Reeve, 1847)
46. Species Tonicia reticulata Nierstrasz, 1905 accepted as Lucilina reticulata (Nierstrasz, 1905) (original combination)
47. Species Tonicia rubiginosa F. W. Hutton, 1872 accepted as Notoplax rubiginosa (F. W. Hutton, 1872) (superseded combination)
48. Species Tonicia rubridens Pilsbry, 1892 accepted as Tonicia lebruni Rochebrune, 1884 (unaccepted > junior subjective synonym)
49. Species Tonicia smithi Leloup, 1980 accepted as Tonicia disjuncta (Frembly, 1827) (unaccepted > junior subjective synonym)
50. Species Tonicia sowerbyi Nierstrasz, 1905 accepted as Lucilina sowerbyi (Nierstrasz, 1905) (original combination)
51. Species Tonicia subatrata Pilsbry, 1893 accepted as Plaxiphora (Plaxiphora) aurata (Spalowsky, 1795) represented as Plaxiphora aurata (Spalowsky, 1795) (junior subjective synonym)
52. Species Tonicia suezensis ; auct. accepted as Lucilina sueziensis (Reeve, 1847) (incorrect spelling)
53. Species Tonicia tydemani Nierstrasz, 1905 accepted as Lucilina tydemani (Nierstrasz, 1905) (original combination)
54. Species Tonicia variegata Nierstrasz, 1905 accepted as Lucilina variegata (Nierstrasz, 1905) (original combination)
55. Species Tonicia zigzag F. W. Hutton, 1872 accepted as Plaxiphora caelata (Reeve, 1847) (junior subjective synonym)
56. Subgenus Tonicia (Tonicia) Gray, 1840 represented as Tonicia Gray, 1840
    1. Species Tonicia (Tonicia) chilensis (Frembly, 1827) represented as Tonicia chilensis (Frembly, 1827)
57. Species Tonicia pustulifera Dall, 1919 (uncertain > taxon inquirendum)

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