1. Species Leucosia affinis Bell, 1855
2. Species Leucosia anatum (Herbst, 1783)
3. Species Leucosia brevimana Bell, 1855
4. Species Leucosia brevior Ortmann, 1892
5. Species Leucosia compressa Shen & Chen, 1978
6. Species Leucosia corallicola Alcock, 1896
7. Species Leucosia craniolaris (Linnaeus, 1758)
8. Species Leucosia formosensis Sakai, 1937
9. Species Leucosia haswelli Miers, 1886
10. Species Leucosia jecusculum (Rathbun, 1911)
11. Species Leucosia leslii Haswell, 1879
12. Species Leucosia longibrachia Shen & Chen, 1978
13. Species Leucosia margaritacea Bell, 1855
14. Species Leucosia moresbiensis Haswell, 1879
15. Species Leucosia ocellata Bell, 1855
16. Species Leucosia phyllocheira Bell, 1855
17. Species Leucosia punctata Bell, 1855
18. Species Leucosia reticulata Miers, 1877
19. Species Leucosia rubripalma Galil, 2003
20. Species Leucosia sima Alcock, 1896
21. Species Leucosia tetraodon Bouvier, 1914
22. Species Leucosia whitmeei Miers, 1875
23. Species Leucosia alcocki Ovaere, 1987 accepted as Urnalana pulchella (Bell, 1855) (unaccepted > junior subjective synonym)
24. Species Leucosia angulata (Rathbun, 1911) accepted as Urnalana angulata (Rathbun, 1911) (unaccepted > superseded combination)
25. Species Leucosia australiensis Miers, 1886 accepted as Leucosia anatum (Herbst, 1783) (unaccepted > junior subjective synonym)
26. Species Leucosia biannulata Tyndale-Biscoe & George, 1962 accepted as Coleusia biannulata (Tyndale-Biscoe & George, 1962) (unaccepted > superseded combination)
27. Species Leucosia bikiniensis Sakai, 1983 accepted as Urnalana elata (A. Milne-Edwards, 1874) (unaccepted > junior subjective synonym)
28. Species Leucosia biminentis Dai & Z Xu, 1991 accepted as Urnalana margaritata (A. Milne-Edwards, 1874) (unaccepted > junior subjective synonym)
29. Species Leucosia brunnea Miers, 1877 accepted as Soceulia brunnea (Miers, 1877) (unaccepted > superseded combination)
30. Species Leucosia Chevertii Haswell, 1879 accepted as Urnalana chevertii (Haswell, 1879) (unaccepted > superseded combination)
31. Species Leucosia corrallicola Alcock, 1896 accepted as Leucosia corallicola Alcock, 1896 (unaccepted > misspelling - incorrect subsequent spelling)
32. Species Leucosia crosnieri Chen, 1989 accepted as Euclosiana crosnieri (Chen, 1989) (unaccepted > superseded combination)
33. Species Leucosia Cumingii Bell, 1855 accepted as Urnalana cumingii (Bell, 1855) (unaccepted > superseded combination)
34. Species Leucosia elata A. Milne-Edwards, 1874 accepted as Urnalana elata (A. Milne-Edwards, 1874) (unaccepted > superseded combination)
35. Species Leucosia elatoides Bouvier, 1915 accepted as Urnalana elatoides (Bouvier, 1915) (unaccepted > superseded combination)
36. Species Leucosia foresti Chen, 1989 accepted as Urnalana foresti (Chen, 1989) (unaccepted > superseded combination)
37. Species Leucosia fuscomaculata Miers, 1877 accepted as Coleusia signata (Paulson, 1875) (unaccepted > junior subjective synonym)
38. Species Leucosia galantua Ovaere, 1988 accepted as Urnalana cumingii (Bell, 1855) (unaccepted > junior subjective synonym)
39. Species Leucosia haematosticta White, 1847 accepted as Leucosia haematosticta Adams, 1847 accepted as Urnalana haematosticta (Adams, 1847) (unaccepted > nomen nudum)
40. Species Leucosia haematosticta Adams, 1847 accepted as Urnalana haematosticta (Adams, 1847) (unaccepted > superseded combination)
41. Species Leucosia hestia White, 1847 (unaccepted > nomen nudum)
42. Species Leucosia hilaris Nobili, 1905 accepted as Urnalana hilaris (Nobili, 1905) (unaccepted > superseded combination)
43. Species Leucosia hoematosticta Adams, 1847 accepted as Leucosia haematosticta Adams, 1847 accepted as Urnalana haematosticta (Adams, 1847) (unaccepted > misspelling - incorrect subsequent spelling)
44. Species Leucosia insularis Takeda & Kurata, 1976 accepted as Urnalana insularis (Takeda & Kurata, 1976) (unaccepted > superseded combination)
45. Species Leucosia latirostrata Shen & Chen, 1978 accepted as Seulocia latirostrata (Shen & Chen, 1978) (unaccepted > superseded combination)
46. Species Leucosia leachii Risso, 1822 accepted as Ilia nucleus (Linnaeus, 1758) (unaccepted > junior subjective synonym)
47. Species Leucosia longifrons De Haan, 1841 accepted as Leucosia anatum (Herbst, 1783) (unaccepted > junior subjective synonym)
48. Species Leucosia longimaculata Chen & Fang, 1991 accepted as Liusius longimaculata (Chen & Fang, 1991) (unaccepted > superseded combination)
49. Species Leucosia maculata Stimpson, 1858 accepted as Seulocia rhomboidalis (De Haan, 1841) (unaccepted > junior subjective synonym)
50. Species Leucosia magna Tyndale-Biscoe & RW George, 1962 accepted as Coleusia magna (Tyndale-Biscoe & RW George, 1962) (unaccepted > superseded combination)
51. Species Leucosia major Chen & Ng, 2003 accepted as Soceulia major (Chen & Ng, 2003) (unaccepted > superseded combination)
52. Species Leucosia margaritata A. Milne-Edwards, 1874 accepted as Urnalana margaritata (A. Milne-Edwards, 1874) (unaccepted > superseded combination)
53. Species Leucosia marmorea Bell, 1855 accepted as Soceulia marmorea (Bell, 1855) (unaccepted > superseded combination)
54. Species Leucosia mimasensis Sakai, 1969 accepted as Euclosiana obtusifrons (De Haan, 1841) (unaccepted > junior subjective synonym)
55. Species Leucosia minuta Chen & Xu, 1991 accepted as Urnalana minuta (Chen & Xu, 1991) (unaccepted > superseded combination)
56. Species Leucosia neocaledonica A. Milne-Edwards, 1874 accepted as Leucosia anatum (Herbst, 1783) (unaccepted > junior subjective synonym)
57. Species Leucosia novemspinosa Lichtenstein, 1815 accepted as Arcania novemspinosa (Lichtenstein, 1815) (unaccepted > superseded combination)
58. Species Leucosia obscura Bell, 1855 accepted as Leucosia craniolaris (Linnaeus, 1758) (unaccepted > junior subjective synonym)
59. Species Leucosia obtusifrons De Haan, 1841 accepted as Euclosiana obtusifrons (De Haan, 1841) (unaccepted > superseded combination)
60. Species Leucosia orbicularis Bell, 1855 accepted as Philyra orbicularis (Bell, 1855) (unaccepted > superseded combination)
61. Species Leucosia ornata Miers, 1877 accepted as Leucosia anatum (Herbst, 1783) (unaccepted > junior subjective synonym)
62. Species Leucosia pacifica Poeppig, 1836 accepted as Holothuriophilus pacificus (Poeppig, 1836) (unaccepted > superseded combination)
63. Species Leucosia pallida Bell, 1855 accepted as Leucosia craniolaris (Linnaeus, 1758) (unaccepted > junior subjective synonym)
64. Species Leucosia parapulchella Dai & Z Xu, 1991 accepted as Urnalana pulchella (Bell, 1855) (unaccepted > junior subjective synonym)
65. Species Leucosia parvimana Stimpson, 1858 accepted as Leucosia craniolaris (Linnaeus, 1758) (unaccepted > junior subjective synonym)
66. Species Leucosia perlata De Haan, 1841 accepted as Leucosia craniolaris (Linnaeus, 1758) (unaccepted > junior subjective synonym)
67. Species Leucosia perryi Miers, 1877 accepted as Pseudophilyra perryi (Miers, 1877) (unaccepted > superseded combination)
68. Species Leucosia phyllocheira White, 1847 accepted as Leucosia phyllocheira Bell, 1855 (unaccepted > nomen nudum)
69. Species Leucosia polita Hess, 1865 accepted as Leucosia anatum (Herbst, 1783) (unaccepted > junior subjective synonym)
70. Species Leucosia pseudomargaritata Chen, 1987 accepted as Urnalana pulchella (Bell, 1855) (unaccepted > junior subjective synonym)
71. Species Leucosia pubescens Miers, 1877 accepted as Seulocia pubescens (Miers, 1877) (unaccepted > superseded combination)
72. Species Leucosia pulchella Bell, 1855 accepted as Urnalana pulchella (Bell, 1855) (unaccepted > superseded combination)
73. Species Leucosia pulcherrima Miers, 1877 accepted as Leucosia anatum (Herbst, 1783) (unaccepted > junior subjective synonym)
74. Species Leucosia pulchra Shen & Chen, 1978 accepted as Seulocia pulchra (Shen & Chen, 1978) (unaccepted > superseded combination)
75. Species Leucosia purarensis Ovaere, 1987 accepted as Urnalana purarensis (Ovaere, 1987) (unaccepted > superseded combination)
76. Species Leucosia rhomboidalis De Haan, 1841 accepted as Seulocia rhomboidalis (De Haan, 1841) (unaccepted > superseded combination)
77. Species Leucosia rotundifrons Chopra, 1933 accepted as Euclosiana rotundifrons (Chopra, 1933) (unaccepted > superseded combination)
78. Species Leucosia sagamiensis Sakai, 1961 accepted as Urnalana elata (A. Milne-Edwards, 1874) (unaccepted > junior subjective synonym)
79. Species Leucosia scabriuscula Fabricius, 1798 accepted as Philyra scabriuscula (Fabricius, 1798) (unaccepted > superseded combination)
80. Species Leucosia scabriuscula Weber, 1795 accepted as Philyra scabriuscula (Fabricius, 1798) (unaccepted > nomen nudum)
81. Species Leucosia signata Paulson, 1875 accepted as Coleusia signata (Paulson, 1875) (unaccepted > superseded combination)
82. Species Leucosia singaporensis Chen & Ng, 2003 accepted as Soceulia brunnea (Miers, 1877) (unaccepted > junior subjective synonym)
83. Species Leucosia sinica Shen & Chen, 1978 accepted as Seulocia vittata (Stimpson, 1858) (unaccepted > junior subjective synonym)
84. Species Leucosia splendida Haswell, 1879 accepted as Leucosia anatum (Herbst, 1783) (unaccepted > junior subjective synonym)
85. Species Leucosia thysanotus RW George & M Clark, 1976 accepted as Urnalana thysanotus (RW George & M Clark, 1976) (unaccepted > superseded combination)
86. Species Leucosia truncata Alcock, 1896 accepted as Seulocia truncata (Alcock, 1896) (unaccepted > superseded combination)
87. Species Leucosia unidentata De Haan, 1841 accepted as Euclosiana unidentata (De Haan, 1841) (unaccepted > superseded combination)
88. Species Leucosia urania (Herbst, 1801) accepted as Coleusia urania (Herbst, 1801) (unaccepted > superseded combination)
89. Species Leucosia vittata Stimpson, 1858 accepted as Seulocia vittata (Stimpson, 1858) (unaccepted > superseded combination)
90. Species Leucosia Whitei Bell, 1855 accepted as Urnalana whitei (Bell, 1855) (unaccepted > superseded combination)

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