1. Species Microcystis adusta H. B. Baker, 1938
2. Species Microcystis albisuturalis K. C. Emberton, Slapcinsky, C. A. Campbell, Rakotondrazafy, Andriamiarison & J. D. Emberton, 2010
3. Species Microcystis ambinanifae K. C. Emberton, 1994
4. Species Microcystis andersoni H. B. Baker, 1938
5. Species Microcystis andriamahajai K. C. Emberton & Pearce, 2000
6. Species Microcystis anosiana Fischer-Piette, C. P. Blanc, F. Blanc & F. Salvat, 1994
7. Species Microcystis argueyrolli Fischer-Piette, C. P. Blanc, F. Blanc & F. Salvat, 1994
8. Species Microcystis arnali Fischer-Piette, C. P. Blanc, F. Blanc & F. Salvat, 1994
9. Species Microcystis aspera H. B. Baker, 1938
10. Species Microcystis basampla K. C. Emberton & Pearce, 2000
11. Species Microcystis benesculpta H. B. Baker, 1938
12. Species Microcystis bismarckiana (Thiele, 1928)
13. Species Microcystis blanci K. C. Emberton & Pearce, 2000
14. Species Microcystis buckorum H. B. Baker, 1938
15. Species Microcystis castanea K. C. Emberton & Pearce, 2000
16. Species Microcystis celestinae K. C. Emberton & O. L. Griffiths, 2009
17. Species Microcystis charpentieri Fischer-Piette, C. P. Blanc, F. Blanc & F. Salvat, 1994
18. Species Microcystis compacta K. C. Emberton & Pearce, 2000
19. Species Microcystis dyakana Godwin-Austen, 1891
20. Species Microcystis embertoni J. Gerlach, O. Griffiths & Slapcinsky, 2023
21. Species Microcystis erasmi Fischer-Piette, C. P. Blanc, F. Blanc & F. Salvat, 1994
22. Species Microcystis esetra K. C. Emberton & Pearce, 2000
23. Species Microcystis esnaulti Fischer-Piette, C. P. Blanc, F. Blanc & F. Salvat, 1994
24. Species Microcystis excavata (Fischer-Piette, F. Blanc & Salvat, 1975)
25. Species Microcystis fosbergi H. B. Baker, 1938
26. Species Microcystis fotsifotsy K. C. Emberton, Slapcinsky, C. A. Campbell, Rakotondrazafy, Andriamiarison & J. D. Emberton, 2010
27. Species Microcystis grodji Fischer-Piette, C. P. Blanc, F. Blanc & F. Salvat, 1994
28. Species Microcystis hainanica Yen, 1939
29. Species Microcystis ilapiriensis K. C. Emberton & Pearce, 2000
30. Species Microcystis josephinae K. C. Emberton & O. L. Griffiths, 2009
31. Species Microcystis kendrae K. C. Emberton & O. L. Griffiths, 2009
32. Species Microcystis kondoi H. B. Baker, 1938
33. Species Microcystis kremenae K. C. Emberton, 1994
34. Species Microcystis lenticula H. B. Baker, 1938
35. Species Microcystis madecassina (Fischer-Piette, F. Blanc & Salvat, 1975) (accepted > unreplaced junior homonym)
36. Species Microcystis mahermanae K. C. Emberton & Pearce, 2000
37. Species Microcystis michellae K. C. Emberton & O. L. Griffiths, 2009
38. Species Microcystis minensis Möllendorff, 1885
39. Species Microcystis minutis Yen, 1939
40. Species Microcystis navachi Fischer-Piette, C. P. Blanc, F. Blanc & F. Salvat, 1994
41. Species Microcystis nitelloides Fischer-Piette, F. Blanc & Salvat, 1975
42. Species Microcystis obscura (Thiele, 1928)
43. Species Microcystis oraka K. C. Emberton, 2003
44. Species Microcystis ornatella (H. Beck, 1838)
45. Species Microcystis palmicola Stoliczka, 1873
46. Species Microcystis perahui H. B. Baker, 1938
47. Species Microcystis platysma K. C. Emberton, 1994
48. Species Microcystis sahavondrononae K. C. Emberton, 1994
49. Species Microcystis saintjohni H. B. Baker, 1938
50. Species Microcystis soa K. C. Emberton & O. L. Griffiths, 2009
51. Species Microcystis stenomphala Möllendorff, 1884
52. Species Microcystis subangulata K. C. Emberton & Pearce, 2000
53. Species Microcystis subplanata K. C. Emberton & Pearce, 2000
54. Species Microcystis tangens Fischer-Piette, F. Blanc & Salvat, 1975
55. Species Microcystis townsendiana (Godwin-Austen & G. Nevill, 1879)
56. Species Microcystis tsara K. C. Emberton & O. L. Griffiths, 2009
57. Species Microcystis tsingia K. C. Emberton, 2003
58. Species Microcystis upolensis
59. Species Microcystis viaregina K. C. Emberton, 1994
60. Species Microcystis vohimenae K. C. Emberton & Pearce, 2000
61. Species Microcystis vohimenoides K. C. Emberton & Pearce, 2000
62. Species Microcystis vony K. C. Emberton, Slapcinsky, C. A. Campbell, Rakotondrazafy, Andriamiarison & J. D. Emberton, 2010
63. Species Microcystis zorony J. Gerlach, O. Griffiths & Slapcinsky, 2023
64. Species Microcystis abeillei Ancey, 1889 accepted as Philonesia abeillei (Ancey, 1889) (unaccepted > superseded combination)
65. Species Microcystis abyssinica (Jickeli, 1873) accepted as Thapsia abyssinica (Jickeli, 1873) (unaccepted > superseded combination)
66. Species Microcystis alba Möllendorff, 1887 accepted as Lamprocystis alba (Möllendorff, 1887) (original combination)
67. Species Microcystis angustivoluta Garrett, 1884 accepted as Hiona angustivoluta (Garrett, 1884) (original combination)
68. Species Microcystis antiqua Odhner, 1917 accepted as Einasleighana antiqua (Odhner, 1917) (original combination)
69. Species Microcystis baldwini Ancey, 1889 accepted as Philonesia baldwini (Ancey, 1889) (unaccepted > superseded combination)
70. Species Microcystis bathiei Fischer-Piette, F. Blanc & Salvat, 1975 accepted as Sitala bathiei (Fischer-Piette, F. Blanc & Salvat, 1975) (unaccepted > superseded combination)
71. Species Microcystis castaneocincta Sykes, 1900 accepted as Greenwoodoconcha nux (Sykes, 1900) (unaccepted > junior subjective synonym)
72. Species Microcystis catletti (Brazier, 1872) accepted as Innesoconcha catletti (Brazier, 1872) (original name)
73. Species Microcystis cicercula (A. Gould, 1846) accepted as Philonesia cicercula (A. Gould, 1846) (unaccepted > superseded combination)
74. Species Microcystis contigua Garrett, 1887 accepted as Philonesia contigua (Garrett, 1887) (original combination)
75. Species Microcystis conula (Pease, 1861) accepted as Diastole conula (Pease, 1861) (unaccepted > superseded combination)
76. Species Microcystis cryptoportica (A. Gould, 1846) accepted as Philonesia cryptoportica (A. Gould, 1846) (unaccepted > superseded combination)
77. Species Microcystis crystallina Möllendorff, 1887 accepted as Lamprocystis crystallina (Möllendorff, 1887) (original combination)
78. Species Microcystis discordiae Garrett, 1881 accepted as Liardetia discordiae (Garrett, 1881)
79. Species Microcystis edithae Preston, 1909 accepted as Philalanka edithae (Preston, 1909) (original combination)
80. Species Microcystis fulva Odhner, 1917 accepted as Tropicystis fulva (Odhner, 1917) (original combination)
81. Species Microcystis fulvus Odhner, 1917 accepted as Microcystis fulva Odhner, 1917 accepted as Tropicystis fulva (Odhner, 1917) (incorrect gender of species epithet)
82. Species Microcystis gemmula Möllendorff, 1887 accepted as Lamprocystis gemmula (Möllendorff, 1887) (unaccepted > superseded combination)
83. Species Microcystis glaberrima C. Semper, 1870 accepted as Lamprocystis glaberrima (C. Semper, 1870) (unaccepted > superseded combination)
84. Species Microcystis globulus Möllendorff, 1887 accepted as Lamprocystis globulus (Möllendorff, 1887) (original combination)
85. Species Microcystis hartmanni Ancey, 1889 accepted as Philonesia hartmanni (Ancey, 1889) (unaccepted > superseded combination)
86. Species Microcystis hirasei Gude, 1900 accepted as Bekkochlamys micrograpta (Pilsbry, 1900) (junior synonym)
87. Species Microcystis hunancola Möllendorff, 1887 accepted as Tanychlamys hunancola (Möllendorff, 1887) (unaccepted > superseded combination, original combination)
88. Species Microcystis indefinita Ancey, 1889 accepted as Philonesia indefinita (Ancey, 1889) (unaccepted > superseded combination)
89. Species Microcystis inscensa Hedley, 1912 accepted as Dendronitor inscensa (Hedley, 1912) accepted as Dendronitor inscensus (Hedley, 1912) (original combination)
90. Species Microcystis kaliellaeformis Klebs, 1886 † accepted as Kaliella kaliellaeformis (Klebs, 1886) † (unaccepted > superseded combination)
91. Species Microcystis kioaensis (Garrett, 1874) accepted as Lamprocystis kioaensis (Garrett, 1874)
92. Species Microcystis lactea C. Semper, 1870 accepted as Lamprocystis lactea (C. Semper, 1870) (unaccepted > superseded combination)
93. Species Microcystis lenta Garrett, 1887 accepted as Philonesia lenta (Garrett, 1887) (original combination)
94. Species Microcystis lucidella (L. Pfeiffer, 1846) accepted as Lamprocystis lucidella (L. Pfeiffer, 1846) (unaccepted > superseded combination)
95. Species Microcystis lymanniana Ancey, 1893 accepted as Hiona lymanniana (Ancey, 1893) (unaccepted > superseded combination)
96. Species Microcystis mabelae (E. A. Smith, 1889) accepted as Lamprocystis mabelae (E. A. Smith, 1889) (unaccepted > superseded combination)
97. Species Microcystis madecassina Fischer-Piette & Salvat, 1966 accepted as Sitala madecassina (Fischer-Piette & Salvat, 1966) (original combination)
98. Species Microcystis maillardi (Deshayes, 1863) accepted as Dupontia maillardi (Deshayes, 1863)
99. Species Microcystis margaritacea C. Semper, 1870 accepted as Palaua margaritacea (C. Semper, 1870) (original combination)
100. Species Microcystis marici Ancey, 1889 accepted as Hiona marici (Ancey, 1889) (original combination)
101. Species Microcystis marmorata Odhner, 1917 accepted as Nitor subrugatus (Reeve, 1852) (junior synonym)
102. Species Microcystis mildredae (E. A. Smith, 1889) accepted as Lamprocystis mildredae (E. A. Smith, 1889) (unaccepted > superseded combination)
103. Species Microcystis minima (H. Adams, 1867) accepted as Microcystina minima (H. Adams, 1867)
104. Species Microcystis mirmido Dautzenberg, 1894 accepted as Microcystina mirmido (Dautzenberg, 1894) (original combination)
105. Species Microcystis molecula (W. H. Benson, 1859) accepted as Macrochlamys molecula (W. H. Benson, 1859) accepted as Tanychlamys molecula (W. H. Benson, 1859) (unaccepted combination )
106. Species Microcystis myops (Dohrn & C. Semper, 1862) accepted as Lamprocystis myops (Dohrn & C. Semper, 1862) (unaccepted > superseded combination)
107. Species Microcystis nitella (Morelet, 1851) accepted as Dupontia nitella (Morelet, 1851) (unaccepted > superseded combination)
108. Species Microcystis normani (E. A. Smith, 1889) accepted as Lamprocystis normani (E. A. Smith, 1889) (unaccepted > superseded combination)
109. Species Microcystis nux Sykes, 1900 accepted as Greenwoodoconcha nux (Sykes, 1900) (original combination)
110. Species Microcystis oahuensis Ancey, 1889 accepted as Philonesia oahuensis (Ancey, 1889) (unaccepted > superseded combination)
111. Species Microcystis palaensis C. Semper, 1870 accepted as Kororia palaensis (C. Semper, 1870) (original combination)
112. Species Microcystis perlucens Ancey, 1889 accepted as Philonesia perlucens (Ancey, 1889) (unaccepted > superseded combination)
113. Species Microcystis perlucida (H. Adams, 1867) accepted as Dupontia perlucida (H. Adams, 1867)
114. Species Microcystis pertenuis (A. Gould, 1846) accepted as Philonesia pertenuis (A. Gould, 1846) (unaccepted > superseded combination)
115. Species Microcystis platyla Ancey, 1889 accepted as Hiona platyla (Ancey, 1889) (unaccepted > superseded combination)
116. Species Microcystis plicosa Ancey, 1889 accepted as Philonesia plicosa (Ancey, 1889) (unaccepted > superseded combination)
117. Species Microcystis poweri (H. Adams, 1868) accepted as Dupontia poweri (H. Adams, 1868)
118. Species Microcystis proletaria (Morelet, 1860) accepted as Dupontia proletaria (Morelet, 1860)
119. Species Microcystis punctifera Garrett, 1879 accepted as Lamprocystis punctifera (Garrett, 1879) (original combination)
120. Species Microcystis pura Garrett, 1887 accepted as Philonesia pura (Garrett, 1887) (original combination)
121. Species Microcystis responsivus Hedley, 1912 accepted as Tarocystis responsiva (Hedley, 1912) (original combination)
122. Species Microcystis rufobrunnea Ancey, 1904 accepted as Hiona rufobrunnea (Ancey, 1904) (unaccepted > superseded combination)
123. Species Microcystis scalpta Garrett, 1884 accepted as Hiona scalpta (Garrett, 1884) (original combination)
124. Species Microcystis schmackeriana Möllendorff, 1882 accepted as Microcystina schmackeriana (Möllendorff, 1883) (original combination)
125. Species Microcystis sculpta Möllendorff, 1883 accepted as Liardetia sculpta (Möllendorff, 1883) (original combination)
126. Species Microcystis semiglobulus Möllendorff, 1887 accepted as Lamprocystis semiglobulus (Möllendorff, 1887) (original combination)
127. Species Microcystis sericans Ancey, 1899 accepted as Philonesia sericans (Ancey, 1899) (unaccepted > superseded combination)
128. Species Microcystis stearnseana Garrett, 1887 accepted as Lamprocystis ensifera (Mousson, 1869) (junior synonym)
129. Species Microcystis straminea C. Semper, 1870 accepted as Palaua straminea (C. Semper, 1870) (original combination)
130. Species Microcystis suavis Jousseaume, 1894 accepted as Philalanka thwaitesi (Reeve, 1854) (unaccepted > junior subjective synonym)
131. Species Microcystis subcicercula Garrett, 1881 accepted as Lamprocystis venosa subcicerula (Garrett, 1881) (original combination)
132. Species Microcystis subrutila (Mighels, 1845) accepted as Kaala subrutila (Mighels, 1845) (unaccepted > superseded combination)
133. Species Microcystis subvenosa Garrett, 1887 accepted as Mendana subvenosa (Garrett, 1887) (original combination)
134. Species Microcystis succinea (L. Pfeiffer, 1845) accepted as Lamprocystis pseudosuccinea Möllendorff, 1893 accepted as Kororia pseudosuccinea (Möllendorff, 1893)
135. Species Microcystis thwaitesi (Reeve, 1854) accepted as Philalanka thwaitesi (Reeve, 1854)
136. Species Microcystis turgida Ancey, 1890 accepted as Philonesia turgida (Ancey, 1890) (unaccepted > superseded combination)
137. Species Microcystis tytthulus Germain, 1918 accepted as Liardetia sculpta (Möllendorff, 1883)
138. Species Microcystis upolensis (Mousson, 1865) accepted as Lamprocystis upolensis (Mousson, 1865) (unaccepted > superseded combination)
139. Species Microcystis verticillata (Pease, 1868) accepted as Hiona verticillata (Pease, 1868) (unaccepted > superseded combination)
140. Species Microcystis vesti (Jickeli, 1873) accepted as Thapsia vestii (Jickeli, 1873) (unaccepted > superseded combination)
141. Species Microcystis vinosa [sic] accepted as Lamprocystis venosa (Pease, 1866) (unaccepted > misspelling - incorrect subsequent spelling)
142. Species Microcystis virginia (Morelet, 1860) accepted as Dupontia virginia (Morelet, 1860)
143. Species Microcystis winifredae Preston, 1909 accepted as Eurychlamys winifredae (Preston, 1909) (original combination)
144. Subgenus Microcystis (Cnesticystis) H. B. Baker, 1938 represented as Microcystis H. Beck, 1838
     1. Species Microcystis (Cnesticystis) aspera H. B. Baker, 1938 represented as Microcystis aspera H. B. Baker, 1938
     2. Species Microcystis (Cnesticystis) kondoi H. B. Baker, 1938 represented as Microcystis kondoi H. B. Baker, 1938
145. Subgenus Microcystis (Facorhina) H. B. Baker, 1938 represented as Microcystis H. Beck, 1838
     1. Species Microcystis (Facorhina) adusta H. B. Baker, 1938 represented as Microcystis adusta H. B. Baker, 1938
     2. Species Microcystis (Facorhina) andersoni H. B. Baker, 1938 represented as Microcystis andersoni H. B. Baker, 1938
     3. Species Microcystis (Facorhina) buckorum H. B. Baker, 1938 represented as Microcystis buckorum H. B. Baker, 1938
     4. Species Microcystis (Facorhina) lenticula H. B. Baker, 1938 represented as Microcystis lenticula H. B. Baker, 1938
146. Subgenus Microcystis (Leurocystis) H. B. Baker, 1938 represented as Microcystis H. Beck, 1838
     1. Species Microcystis (Leurocystis) saintjohni H. B. Baker, 1938 represented as Microcystis saintjohni H. B. Baker, 1938
147. Subgenus Microcystis (Microcystis) H. Beck, 1838 represented as Microcystis H. Beck, 1838
     1. Species Microcystis (Microcystis) benesculpta H. B. Baker, 1938 represented as Microcystis benesculpta H. B. Baker, 1938
     2. Species Microcystis (Microcystis) fosbergi H. B. Baker, 1938 represented as Microcystis fosbergi H. B. Baker, 1938
     3. Species Microcystis (Microcystis) ornatella (H. Beck, 1838) represented as Microcystis ornatella (H. Beck, 1838)
     4. Species Microcystis (Microcystis) perahui H. B. Baker, 1938 represented as Microcystis perahui H. B. Baker, 1938
148. Species Microcystis ambae (Godwin-Austen, 1899) (uncertain > taxon inquirendum)
149. Species Microcystis bunguranensis E. A. Smith, 1894 (uncertain > taxon inquirendum)
150. Species Microcystis glaberrima Möllendorff, 1883 (uncertain > taxon inquirendum, not C. Semper, 1870)
151. Species Microcystis wilsoni C. Semper, 1870 (uncertain > taxon inquirendum)

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