1. Species Leptoclinum africanus (Michaelsen, 1914) accepted as Didemnum candidum Savigny, 1816 (new combination)
2. Species Leptoclinum albidum (Verrill, 1871) accepted as Didemnum albidum (Verrill, 1871) (new combination)
3. Species Leptoclinum album Oka, 1927 accepted as Didemnum moseleyi (Herdman, 1886) (original combination)
4. Species Leptoclinum annectens Herdman, 1886 accepted as Didemnum candidum Savigny, 1816 (original combination)
5. Species Leptoclinum asperum Sluiter, 1900 accepted as Didemnum tenue (Herdman, 1886) (original combination)
6. Species Leptoclinum atropunctatum (Van Name, 1902) accepted as Diplosoma listerianum (Milne Edwards, 1841) (new combination)
7. Species Leptoclinum biglans Sluiter, 1906 accepted as Didemnum biglans (Sluiter, 1906) (original combination)
8. Species Leptoclinum bistratum (Sluiter, 1905) accepted as Lissoclinum bistratum (Sluiter, 1905) (new combination)
9. Species Leptoclinum calificiforme Sluiter, 1909 accepted as Diplosoma virens (Hartmeyer, 1909) (original combination)
10. Species Leptoclinum candidum (Savigny, 1816) accepted as Didemnum candidum Savigny, 1816 (new combination)
11. Species Leptoclinum carpenteri Herdman, 1886 accepted as Didemnum carpenteri (Herdman, 1886) (original combination)
12. Species Leptoclinum cineraceum Sluiter, 1898 accepted as Didemnum cineraceum (Sluiter, 1898) (original combination)
13. Species Leptoclinum clavatum Sars, 1851 accepted as Distaplia clavata (Sars, 1851) (original combination)
14. Species Leptoclinum coccineum Drasche, 1883 accepted as Didemnum coccineum (Drasche, 1883) (original combination)
15. Species Leptoclinum commune Della Valle, 1877 accepted as Didemnum commune (Della Valle, 1877) (original combination)
16. Species Leptoclinum conchyliatum Sluiter, 1898 accepted as Didemnum conchyliatum (Sluiter, 1898) (original combination)
17. Species Leptoclinum coriaceum Drasche, 1883 accepted as Didemnum coriaceum (Drasche, 1883) (original combination)
18. Species Leptoclinum cretaceum Sluiter, 1898 accepted as Didemnum candidum Savigny, 1816 (original combination)
19. Species Leptoclinum densum Nott, 1892 accepted as Didemnum densum (Nott, 1892) (original combination)
20. Species Leptoclinum discrepans Sluiter, 1909 accepted as Trididemnum discrepans (Sluiter, 1909) (original combination)
21. Species Leptoclinum durum Milne Edwards, 1841 accepted as Didemnum maculosum (Milne Edwards, 1841) (original combination)
22. Species Leptoclinum edwardsi Herdman, 1886 accepted as Didemnum edwardsi (Herdman, 1886) (original combination)
23. Species Leptoclinum fulgens Milne Edwards, 1841 accepted as Didemnum fulgens (Milne Edwards, 1841) (original combination)
24. Species Leptoclinum fulgidum Giard, 1872 accepted as Didemnum fulgens (Milne Edwards, 1841) (original combination)
25. Species Leptoclinum gelatinosum Milne Edwards, 1841 accepted as Diplosoma listerianum (Milne Edwards, 1841) (original combination)
26. Species Leptoclinum grande Herdman, 1886 accepted as Didemnum grande (Herdman, 1886) (original combination)
27. Species Leptoclinum granulosum Drasche, 1883 accepted as Didemnum granulosum (Drasche, 1883) (original combination)
28. Species Leptoclinum ianthimum Sluiter, 1898 accepted as Didemnum psammatode (Sluiter, 1895) accepted as Didemnum psammatodes (Sluiter, 1895) (literature misspelling)
29. Species Leptoclinum ianthinum Sluiter, 1898 accepted as Didemnum psammatode (Sluiter, 1895) accepted as Didemnum psammatodes (Sluiter, 1895) (original combination)
30. Species Leptoclinum incanum Herdman, 1899 accepted as Didemnum incanum (Herdman, 1899) (original combination)
31. Species Leptoclinum japonicum Herdman, 1886 accepted as Didemnum japonicum (Herdman, 1886) (original combination)
32. Species Leptoclinum jeffreysi Herdman, 1886 accepted as Didemnum jeffreysi (Herdman, 1886) (original combination)
33. Species Leptoclinum jugosum Herdman & Riddell, 1913 accepted as Polysyncraton jugosum (Herdman & Riddell, 1913) (original combination)
34. Species Leptoclinum lacazei Giard, 1872 accepted as Polysyncraton lacazei (Giard, 1872) (original combination)
35. Species Leptoclinum lacteum (Van Name, 1902) accepted as Diplosoma listerianum (Milne Edwards, 1841) (new combination)
36. Species Leptoclinum lambitum (Sluiter, 1900) accepted as Didemnum lambitum (Sluiter, 1900) (new combination)
37. Species Leptoclinum listerianum Milne Edwards, 1841 accepted as Diplosoma listerianum (Milne Edwards, 1841) (original combination)
38. Species Leptoclinum lividum Sars, 1851 accepted as Distaplia livida (Sars, 1851) (original combination)
39. Species Leptoclinum longinquum Sluiter, 1912 accepted as Diplosoma longinquum (Sluiter, 1912) (original combination)
40. Species Leptoclinum luteolum Verrill, 1871 accepted as Didemnum albidum (Verrill, 1871) (original combination)
41. Species Leptoclinum macdonaldi (Herdman, 1886) accepted as Diplosoma listerianum (Milne Edwards, 1841) (new combination)
42. Species Leptoclinum macrolobium Tokioka, 1949 accepted as Diplosoma listerianum (Milne Edwards, 1841) (original combination)
43. Species Leptoclinum maculatum Nott, 1892 accepted as Didemnum maculatum (Nott, 1892) (original combination)
44. Species Leptoclinum maculosum Milne Edwards, 1841 accepted as Didemnum maculosum (Milne Edwards, 1841) (original combination)
45. Species Leptoclinum margaritiferae Herdman, 1906 accepted as Leptoclinides dubius (Sluiter, 1909) (original combination)
46. Species Leptoclinum marginatum Drasche, 1883 accepted as Didemnum coriaceum (Drasche, 1883) (original combination)
47. Species Leptoclinum marmoratum Sluiter, 1909 accepted as Trididemnum marmoratum (Sluiter, 1909) (original combination)
48. Species Leptoclinum midori Tokioka, 1954 accepted as Diplosoma simile (Sluiter, 1909) (original combination)
49. Species Leptoclinum mitsukurii (Oka, 1892) accepted as Diplosoma listerianum (Milne Edwards, 1841) (new combination)
50. Species Leptoclinum molle (Herdman, 1886) accepted as Didemnum molle (Herdman, 1886) (new combination)
51. Species Leptoclinum moseleyi Herdman, 1886 accepted as Didemnum moseleyi (Herdman, 1886) (new combination)
52. Species Leptoclinum multifidum Sluiter, 1909 accepted as Diplosoma multifidum (Sluiter, 1909) (original combination)
53. Species Leptoclinum neglectum Herdman, 1886 accepted as Didemnum neglectum Herdman, 1886 (new combination)
54. Species Leptoclinum niveum Nott, 1892 accepted as Didemnum candidum Savigny, 1816 (original combination)
55. Species Leptoclinum okai Tokioka, 1949 accepted as Diplosoma listerianum (Milne Edwards, 1841) (original combination)
56. Species Leptoclinum ostrearium (Michaelsen, 1930) accepted as Lissoclinum ostrearium (Michaelsen, 1930) (new combination)
57. Species Leptoclinum patella (Gottschaldt, 1898) accepted as Lissoclinum patella (Gottschaldt, 1898) (new combination)
58. Species Leptoclinum patulum Herdman, 1899 accepted as Didemnum patulum (Herdman, 1899) (original combination)
59. Species Leptoclinum perforatum Giard, 1872 accepted as Lissoclinum perforatum (Giard, 1872) (original combination)
60. Species Leptoclinum perspicuum Sluiter, 1909 accepted as Diplosoma translucidum (Hartmeyer, 1909) (original combination)
61. Species Leptoclinum peyrefittense (Brement, 1913) accepted as Didemnum peyrefittense Brément, 1913 (new combination)
62. Species Leptoclinum polare Hartmeyer, 1903 accepted as Didemnum albidum (Verrill, 1871) (original combination)
63. Species Leptoclinum propinquum Herdman, 1886 accepted as Trididemnum propinquum (Herdman, 1886) (original combination)
64. Species Leptoclinum protectum Daumézon, 1908 accepted as Didemnum protectum (Daumézon, 1908) (original combination)
65. Species Leptoclinum psamathodes Sluiter, 1895 accepted as Didemnum psammatode (Sluiter, 1895) accepted as Didemnum psammatodes (Sluiter, 1895) (incorrect original spelling)
66. Species Leptoclinum psammathodes Sluiter, 1895 accepted as Didemnum psammatode (Sluiter, 1895) accepted as Didemnum psammatodes (Sluiter, 1895) (literature misspelling)
67. Species Leptoclinum psammatodes Sluiter, 1895 accepted as Didemnum psammatode (Sluiter, 1895) accepted as Didemnum psammatodes (Sluiter, 1895) (literature misspelling)
68. Species Leptoclinum pseudoleptoclinum (Drasche, 1883) accepted as Lissoclinum perforatum (Giard, 1872) (new combination)
69. Species Leptoclinum punctatum Forbes, 1848 accepted as Diplosoma listerianum (Milne Edwards, 1841) (original combination)
70. Species Leptoclinum ramosum Herdman, 1906 accepted as Trididemnum sibogae (Hartmeyer, 1910) (secondary homonym)
71. Species Leptoclinum rayneri Macdonald, 1859 accepted as Diplosoma listerianum (Milne Edwards, 1841) (original combination)
72. Species Leptoclinum roseum (Sars, 1851) accepted as Didemnum roseum Sars, 1851 (new combination)
73. Species Leptoclinum rubicundum Herdman, 1886 accepted as Polysyncraton chondrilla (Michaelsen, 1924) (original combination)
74. Species Leptoclinum scidula Sluiter, 1900 accepted as Didemnum tuberatum (Nott, 1892) (original combination)
75. Species Leptoclinum simile Sluiter, 1909 accepted as Diplosoma simile (Sluiter, 1909) (original combination)
76. Species Leptoclinum siphoniatum Sluiter, 1895 accepted as Didemnum psammatode (Sluiter, 1895) accepted as Didemnum psammatodes (Sluiter, 1895) (original combination)
77. Species Leptoclinum speciosum Herdman, 1886 accepted as Didemnum speciosum (Herdman, 1886) (original combination)
78. Species Leptoclinum structum Gottschaldt, 1894 accepted as Didemnum roseum Sars, 1851 (original combination)
79. Species Leptoclinum subflavum Herdman, 1886 accepted as Didemnum subflavum (Herdman, 1886) (original combination)
80. Species Leptoclinum subviridis Sluiter, 1909 accepted as Leptoclinides subviridis (Sluiter, 1909) (original combination)
81. Species Leptoclinum takeharai Tokioka, 1951 accepted as Diplosoma listerianum (Milne Edwards, 1841) (original combination)
82. Species Leptoclinum tenue Herdman, 1886 accepted as Didemnum tenue (Herdman, 1886) (original combination)
83. Species Leptoclinum thomsoni Herdman, 1886 accepted as Didemnum thomsoni Herdman, 1886 (original combination)
84. Species Leptoclinum tonga Herdman, 1886 accepted as Didemnum tonga (Herdman, 1886) (original combination)
85. Species Leptoclinum torresii Sluiter, 1895 accepted as Didemnum torresii (Sluiter, 1895) (original combination)
86. Species Leptoclinum translucidum Hartmeyer, 1909 accepted as Diplosoma translucidum (Hartmeyer, 1909) (replacement name)
87. Species Leptoclinum tridentatum Drasche, 1883 accepted as Didemnum maculosum (Milne Edwards, 1841) (original combination)
88. Species Leptoclinum tuberatum Nott, 1892 accepted as Didemnum tuberatum (Nott, 1892) (original combination)
89. Species Leptoclinum varium Sluiter, 1909 accepted as Diplosoma virens (Hartmeyer, 1909) (original combination)
90. Species Leptoclinum virens Hartmeyer, 1909 accepted as Diplosoma virens (Hartmeyer, 1909) (original combination)
91. Species Leptoclinum viride Herdman, 1906 accepted as Didemnum viride (Herdman, 1906) (original combination)
92. Species Leptoclinum ceylonicum Herdman, 1906 (uncertain > nomen dubium, original combination - current genus not accepted)
93. Species Leptoclinum glaciale Herdman, 1910 (uncertain > nomen dubium)
94. Species Leptoclinum octogesimum Hartmeyer, 1905 (uncertain > nomen dubium, original combination - current genus not accepted)
95. Species Leptoclinum papyraceum Sluiter, 1909 (uncertain > nomen dubium, original combination - current genus not accepted)
96. Species Leptoclinum pustulosum Sluiter, 1895 (uncertain > nomen dubium, original combination - current genus not accepted)
97. Species Leptoclinum verrucosum Heiden, 1893 (uncertain > nomen dubium, original combination - current genus not accepted)

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