1. Species Japonia (Lagochilus) balabacensis (E. A. Smith, 1895) accepted as Japonia quinquelirata (Möllendorff, 1887) (unaccepted > junior subjective synonym)
2. Species Japonia (Lagochilus) bangueyensis (E. A. Smith, 1895) accepted as Japonia jucunda (E. A. Smith, 1893) (unaccepted > junior subjective synonym)
3. Species Japonia (Lagochilus) barbata (L. Pfeiffer, 1855) accepted as Lagocheilus barbatus (L. Pfeiffer, 1855) (unaccepted combination)
4. Species Japonia (Lagochilus) baritensis E. A. Smith, 1893 accepted as Lagocheilus baritensis E. A. Smith, 1893 (unaccepted combination)
5. Species Japonia (Lagochilus) bella (E. von Martens, 1872) accepted as Lagocheilus bellus (E. von Martens, 1873) (unaccepted combination)
6. Species Japonia (Lagochilus) bellula (E. von Martens, 1865) accepted as Lagocheilus bellulus (E. von Martens, 1865) (unaccepted combination)
7. Species Japonia (Lagochilus) bifimbriata (Möllendorff, 1890) accepted as Lagocheilus bifimbriatus Möllendorff, 1890 (unaccepted combination)
8. Species Japonia (Lagochilus) binoyae (Sykes, 1899) accepted as Lagocheilus binoyae (Sykes, 1899)
9. Species Japonia (Lagochilus) borneensis (E. A. Smith, 1893) accepted as Japonia borneensis (E. A. Smith, 1893) (unaccepted > superseded combination)
10. Species Japonia (Lagochilus) buginensis (P. Sarasin & F. Sarasin, 1899) accepted as Lagocheilus buginensis P. Sarasin & F. Sarasin, 1899 (unaccepted combination)
11. Species Japonia (Lagochilus) bunguranensis (E. A. Smith, 1894) accepted as Japonia bunguranensis (E. A. Smith, 1894) (unaccepted combination)
12. Species Japonia (Lagochilus) cagayanica (Quadras & Möllendorff, 1895) accepted as Lagocheilus cagayanicus Quadras & Möllendorff, 1895 (unaccepted combination)
13. Species Japonia (Lagochilus) celebicus (P. Sarasin & F. Sarasin, 1899) accepted as Lagocheilus celebicus P. Sarasin & F. Sarasin, 1899 (unaccepted combination)
14. Species Japonia (Lagochilus) ciliata (G. B. Sowerby I, 1843) accepted as Lagocheilus ciliatus (G. B. Sowerby I, 1843) (unaccepted combination)
15. Species Japonia (Lagochilus) cilifera (Mousson, 1849) accepted as Lagocheilus ciliferus (Mousson, 1849) (unaccepted combination)
16. Species Japonia (Lagochilus) ciliocincta (E. von Martens, 1865) accepted as Japonia ciliocincta (E. von Martens, 1865)
17. Species Japonia (Lagochilus) compressa (Möllendorff, 1894) accepted as Lagocheilus compressum Möllendorff, 1894 (unaccepted combination)
18. Species Japonia (Lagochilus) confluens (L. Pfeiffer, 1860) accepted as Cyclotus confluens (L. Pfeiffer, 1860) (unaccepted combination)
19. Species Japonia (Lagochilus) conica (E. von Martens, 1860) accepted as Lagocheilus conicus (E. von Martens, 1860) (unaccepted combination)
20. Species Japonia (Lagochilus) convexa (Möllendorff, 1897) accepted as Lagocheilus convexus Möllendorff, 1897 (unaccepted combination)
21. Species Japonia (Lagochilus) costulata (Möllendorff, 1900) accepted as Lagocheilus costulatus Möllendorff, 1900 (unaccepted combination)
22. Species Japonia (Lagochilus) depicta (Tapparone Canefri, 1884) accepted as Lagocheilus depictus (Tapparone Canefri, 1884) (unaccepted combination)
23. Species Japonia (Lagochilus) dido (Godwin-Austen, 1889) accepted as Japonia dido (Godwin-Austen, 1889) (unaccepted combination)
24. Species Japonia (Lagochilus) dohertyi (Fulton, 1899) accepted as Lagocheilus dohertyi (Fulton, 1899) (unaccepted combination)
25. Species Japonia (Lagochilus) euconus (Möllendorff, 1894) accepted as Leptopoma euconus Möllendorff, 1894 (unaccepted combination)
26. Species Japonia (Lagochilus) euryomphala (Möllendorff, 1895) accepted as Lagocheilus euryomphalus Möllendorff, 1895 (unaccepted combination)
27. Species Japonia (Lagochilus) exigua (E. A. Smith, 1894) accepted as Lagocheilus exiguus E. A. Smith, 1894 (unaccepted combination)
28. Species Japonia (Lagochilus) fischeri (Morlet, 1886) accepted as Lagocheilus fischeri Morlet, 1886 (unaccepted combination)
29. Species Japonia (Lagochilus) fornicata (L. Pfeiffer, 1854) accepted as Gonatorhaphe fornicata (L. Pfeiffer, 1854) (unaccepted combination)
30. Species Japonia (Lagochilus) garelli (Souleyet, 1852) accepted as Lagocheilus garelli (Souleyet, 1852) (unaccepted combination)
31. Species Japonia (Lagochilus) grandipila (O. Boettger, 1891) accepted as Lagocheilus grandipilus O. Boettger, 1891
32. Species Japonia (Lagochilus) grandis Möllendorff, 1890 accepted as Lagocheilus grandis Möllendorff, 1890 (unaccepted combination)
33. Species Japonia (Lagochilus) guimarasensis (G. B. Sowerby I, 1843) accepted as Lagocheilus guimarasensis (G. B. Sowerby I, 1843) (unaccepted combination)
34. Species Japonia (Lagochilus) helicoides (G. B. Sowerby I, 1843) accepted as Lagocheilus helicoides (G. B. Sowerby I, 1843) accepted as Lagocheilus turbinatum (L. Pfeiffer, 1846)
35. Species Japonia (Lagochilus) humilis (Möllendorff, 1897) accepted as Lagocheilus humilis Möllendorff, 1897 (unaccepted combination)
36. Species Japonia (Lagochilus) hypselospira (Möllendorff, 1901) accepted as Lagocheilus hypselospirus Möllendorff, 1901 (unaccepted combination)
37. Species Japonia (Lagochilus) inconspicua (P. Sarasin & F. Sarasin, 1899) accepted as Lagocheilus inconspicuus P. Sarasin & F. Sarasin, 1899 (unaccepted combination)
38. Species Japonia (Lagochilus) inornata (E. A. Smith, 1893) accepted as Japonia inornata (E. A. Smith, 1893) (unaccepted > superseded combination)
39. Species Japonia (Lagochilus) jucundus (E. A. Smith, 1893) accepted as Japonia jucunda (E. A. Smith, 1893) (unaccepted > superseded combination, unaccepted combination)
40. Species Japonia (Lagochilus) keppeli (Godwin-Austen, 1889) accepted as Japonia keppeli (Godwin-Austen, 1889) (unaccepted combination)
41. Species Japonia (Lagochilus) kinabaluensis (E. A. Smith, 1895) accepted as Japonia trilirata kinabaluensis (E. A. Smith, 1895) (unaccepted rank)
42. Species Japonia (Lagochilus) klobukowskii (Morlet, 1885) accepted as Lagocheilus klobukowskii (Morlet, 1885) (unaccepted combination)
43. Species Japonia (Lagochilus) landesi (Morlet, 1885) accepted as Lagocheilus landesi (Morlet, 1885) (unaccepted combination)
44. Species Japonia (Lagochilus) laomontana (L. Pfeiffer, 1863) accepted as Lagocheilus laomontanus (L. Pfeiffer, 1863) (unaccepted combination)
45. Species Japonia (Lagochilus) leporina (W. T. Blanford, 1865) accepted as Lagocheilus leporinus W. T. Blanford, 1865 (unaccepted combination)
46. Species Japonia (Lagochilus) liratula (Möllendorff, 1894) accepted as Lagocheilus liratulus Möllendorff, 1894 (unaccepted combination)
47. Species Japonia (Lagochilus) macromphala (Möllendorff, 1897) accepted as Lagocheilus macromphalus Möllendorff, 1897 (unaccepted combination)
48. Species Japonia (Lagochilus) malleatus (W. T. Blanford & H. F. Blanford, 1861) accepted as Lagocheilus malleatus (W. T. Blanford & H. F. Blanford, 1861) (unaccepted combination)
49. Species Japonia (Lagochilus) marangensis (Aldrich, 1898) accepted as Lagocheilus marangensis Aldrich, 1898 (unaccepted combination)
50. Species Japonia (Lagochilus) metcalfei (Issel, 1874) accepted as Japonia metcalfei (Issel, 1874) (unaccepted combination)
51. Species Japonia (Lagochilus) mundyana (Godwin-Austen, 1889) accepted as Japonia mundyana (Godwin-Austen, 1889) (unaccepted combination)
52. Species Japonia (Lagochilus) natunensis (E. A. Smith, 1894) accepted as Lagocheilus natunensis E. A. Smith, 1894 (unaccepted combination)
53. Species Japonia (Lagochilus) obliquistriata (Bullen, 1904) accepted as Lagocheilus obliquistriatus Bullen, 1904
54. Species Japonia (Lagochilus) occulta (Sykes, 1899) accepted as Lagocheilus occultus Sykes, 1899 (unaccepted combination)
55. Species Japonia (Lagochilus) omphalotropis (Möllendorff, 1887) accepted as Lagocheilus omphalotropis Möllendorff, 1887 (unaccepted combination)
56. Species Japonia (Lagochilus) pachytropis (Möllendorff, 1896) accepted as Lagocheilus pachytropis Möllendorff, 1896 (unaccepted combination)
57. Species Japonia (Lagochilus) papuana (E. A. Smith, 1897) accepted as Lagocheilus papuanus E. A. Smith, 1897 (unaccepted combination)
58. Species Japonia (Lagochilus) parva (G. B. Sowerby I, 1843) accepted as Lagocheilus parvus (G. B. Sowerby I, 1843) (unaccepted combination)
59. Species Japonia (Lagochilus) phayrei (Theobald, 1870) accepted as Lagocheilus phayrei (Theobald, 1870) (unaccepted combination)
60. Species Japonia (Lagochilus) poirierii (Tapparone Canefri, 1883) accepted as Lagocheilus poirieri (Tapparone Canefri, 1883) (unaccepted combination)
61. Species Japonia (Lagochilus) polynema (Mörch, 1876) accepted as Lagocheilus polynema (Mörch, 1876) (unaccepted combination)
62. Species Japonia (Lagochilus) polytropis (Quadras & Möllendorff, 1895) accepted as Lagocheilus polytropis Quadras & Möllendorff, 1895 (unaccepted combination)
63. Species Japonia (Lagochilus) quadrasi (Möllendorff, 1887) accepted as Lagocheilus quadrasi Möllendorff, 1887 (unaccepted combination)
64. Species Japonia (Lagochilus) quadricincta E. A. Smith, 1895 accepted as Lagocheilus quadricinctus E. A. Smith, 1895 (unaccepted combination)
65. Species Japonia (Lagochilus) quinquelirata (Möllendorff, 1887) accepted as Japonia quinquelirata (Möllendorff, 1887) (unaccepted > superseded combination, unaccepted combination)
66. Species Japonia (Lagochilus) rabongensis (E. A. Smith, 1895) accepted as Japonia rabongensis (E. A. Smith, 1895) (unaccepted subgeneric classification)
67. Species Japonia (Lagochilus) raripila (Morelet, 1881) accepted as Cyclophorus raripilus Morelet, 1881 (unaccepted combination)
68. Species Japonia (Lagochilus) reticulata Möllendorff, 1897 accepted as Lagocheilus reticulatus Möllendorff, 1897 (unaccepted combination)
69. Species Japonia (Lagochilus) roepstorfi (Mörch, 1876) accepted as Lagocheilus roepstorfi (Mörch, 1876)
70. Species Japonia (Lagochilus) romblonensis (Möllendorff, 1897) accepted as Lagocheilus romblonensis Möllendorff, 1897 (unaccepted combination)
71. Species Japonia (Lagochilus) scalaris (Quadras & Möllendorff, 1895) accepted as Lagocheilus scalaris Quadras & Möllendorff, 1895 (unaccepted combination)
72. Species Japonia (Lagochilus) scissimargo (W. H. Benson, 1856) accepted as Lagocheilus scissimargo (W. H. Benson, 1856) (unaccepted combination)
73. Species Japonia (Lagochilus) similis (E. A. Smith, 1893) accepted as Japonia jucunda (E. A. Smith, 1893) (unaccepted > junior subjective synonym)
74. Species Japonia (Lagochilus) sirhassenensis (E. A. Smith, 1894) accepted as Lagocheilus sirhassenensis E. A. Smith, 1894 (unaccepted combination)
75. Species Japonia (Lagochilus) smithi (Kobelt, 1897) accepted as Lagocheilus smithi Kobelt, 1897 (unaccepted combination)
76. Species Japonia (Lagochilus) solidula (Möllendorff, 1894) accepted as Lagocheilus solidulus Möllendorff, 1894 (unaccepted combination)
77. Species Japonia (Lagochilus) stenomphala (Möllendorff, 1890) accepted as Lagocheilus stenomphalus Möllendorff, 1890 (unaccepted combination)
78. Species Japonia (Lagochilus) stephanophora (Möllendorff, 1895) accepted as Lagocheilus stephanophorus Möllendorff, 1895 (unaccepted combination)
79. Species Japonia (Lagochilus) striolata (Stoliczka, 1872) accepted as Lagocheilus striolatus Stoliczka, 1872 (unaccepted combination)
80. Species Japonia (Lagochilus) swettenhami (de Morgan, 1886) accepted as Lagocheilus swettenhami de Morgan, 1886 (unaccepted combination)
81. Species Japonia (Lagochilus) tigrinula (Möllendorff, 1891) accepted as Lagocheilus tigrinulus Möllendorff, 1891 (unaccepted combination)
82. Species Japonia (Lagochilus) tomotrema (W. H. Benson, 1857) accepted as Lagocheilus tomotremus (W. H. Benson, 1857) (unaccepted combination)
83. Species Japonia (Lagochilus) townsendi (Crosse, 1879) accepted as Lagocheilus townsendi Crosse, 1879 (unaccepted combination)
84. Species Japonia (Lagochilus) trilirata (L. Pfeiffer, 1852) accepted as Japonia trilirata (L. Pfeiffer, 1852) (unaccepted combination)
85. Species Japonia (Lagochilus) trochoides (Stoliczka, 1872) accepted as Lagocheilus trochoides Stoliczka, 1872 (unaccepted combination)
86. Species Japonia (Lagochilus) trochulus (E. von Martens, 1867) accepted as Japonia trochulus (E. von Martens, 1867) (unaccepted subgeneric classification)
87. Species Japonia (Lagochilus) tumidula (Quadras & Möllendorff, 1895) accepted as Lagocheilus tumidulus Quadras & Möllendorff, 1895 (unaccepted combination)
88. Species Japonia (Lagochilus) umbilicata (Kobelt, 1886) accepted as Lagocheilus umbilicatus (Kobelt, 1886) (unaccepted combination)
89. Species Japonia (Lagochilus) vesca (Sykes, 1899) accepted as Lagocheilus vescus (Sykes, 1899)
90. Species Japonia (Lagochilus) warnefordianus (G. Nevill, 1878) accepted as Lagocheilus warnefordianus G. Nevill, 1878 (unaccepted combination)
91. Species Japonia (Lagochilus) wuellerstorfiana (Zelebor, 1867) accepted as Lagocheilus wuellerstorfianus (Zelebor, 1867) (unaccepted combination)
92. Species Japonia (Lagochilus) tenebricosa (A. Adams & Reeve, 1848) represented as Lagocheilus tenebricosus (A. Adams & Reeve, 1848)

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