1. Species Actinoptychus adriaticus Grunow
2. Species Actinoptychus annulatus (G.C.Wallich) Grunow
3. Species Actinoptychus boliviensis C.Janisch
4. Species Actinoptychus decorans A.W.F.Schmidt
5. Species Actinoptychus glabratus (Grunow) Van Heurck
6. Species Actinoptychus gruendleri A.W.F.Schmidt
7. Species Actinoptychus heliopelta Grunow, 1883
8. Species Actinoptychus hexagonus Grunow in Schmidt, 1874
9. Species Actinoptychus hillabyanus J.-J.Brun
10. Species Actinoptychus janischii Grunow
11. Species Actinoptychus kymatodes Pantocsek
12. Species Actinoptychus laevigatus Grunow
13. Species Actinoptychus minutus Greville
14. Species Actinoptychus moelleri Grunow
15. Species Actinoptychus moronensis (Greville) Cleve
16. Species Actinoptychus nitidus (Greville) A.Schmidt, 1874
17. Species Actinoptychus packi G.D.Hanna
18. Species Actinoptychus pericavatus J.-J.Brun
19. Species Actinoptychus pulchellus
20. Species Actinoptychus sculptilis A.W.F.Schmidt
21. Species Actinoptychus splendens (Shadbolt) Ralfs ex Pritchard, 1861
22. Species Actinoptychus stella A.W.F.Schmidt, 1886
23. Species Actinoptychus szontaghii Pantocsek, 1889
24. Species Actinoptychus trilingulatus (Brightwell) Ralfs
25. Species Actinoptychus truanii A.W.F.Schmidt
26. Species Actinoptychus vulgaris Schumann, 1867
27. Species Actinoptychus halionyx Grunow, 1867 accepted as Actinoptychus splendens var. halionyx (Grunow) Grunow in Van Heurck, 1883 accepted as Actinoptychus halionyx var. halionyx Grunow, 1867 (synonym)
28. Species Actinoptychus undulatus (J.W.Bailey) Ralfs, 1861 accepted as Actinoptychus senarius (Ehrenberg) Ehrenberg, 1843 accepted as Actinocyclus senarius Ehrenberg, 1838 (synonym)
29. Species Actinoptychus adamans Tempère & Brun in Brun & Tempère, 1889 (uncertain > unassessed)
30. Species Actinoptychus aequalis Andrews in Andrews & Abbott, 1985 (uncertain > unassessed)
31. Species Actinoptychus affinis Grunow in Schmidt et al., 1890 (uncertain > unassessed)
32. Species Actinoptychus affinis Barker & Meakin, 1945 (uncertain > unassessed)
33. Species Actinoptychus africanus Leuduger-Fortmorel, 1898 (uncertain > unassessed)
34. Species Actinoptychus alternans Mann, 1907 (uncertain > unassessed)
35. Species Actinoptychus amblyoceros (Ehrenberg) A.Schmidt, 1874 (uncertain > unassessed)
36. Species Actinoptychus amoenus Leuduger-Fortmorel, 1898 (uncertain > unassessed)
37. Species Actinoptychus ananinensis Pantocsek, 1889 (uncertain > unassessed)
38. Species Actinoptychus anceps Leuduger-Fortmorel, 1879 (uncertain > unassessed)
39. Species Actinoptychus ancorifer Schumann, 1867 (uncertain > unassessed)
40. Species Actinoptychus anemone Brun in Brun & Tempère, 1889 (uncertain > unassessed)
41. Species Actinoptychus angulatus [Mellor]?, 1920 (uncertain > unassessed)
42. Species Actinoptychus antarcticus (F.S.Castracane degli Antelminelli) H.Heiden accepted as Omphalopelta antarctica Castracane, 1886 (uncertain > unassessed)
43. Species Actinoptychus antistrophus Brun in Schmidt et al., 1890 (uncertain > unassessed)
44. Species Actinoptychus apicatus Ehrenberg, 1855 (uncertain > unassessed)
45. Species Actinoptychus aquila Ehrenberg, 1843 (uncertain > unassessed)
46. Species Actinoptychus arcuatus Schumann, 1867 (uncertain > unassessed)
47. Species Actinoptychus arculifer Schmidt in Schmidt et al., 1886 (uncertain > unassessed)
48. Species Actinoptychus areolatus (Ehrenberg) A.W.F.Schmidt, 1874 accepted as Omphalopelta areolata Ehrenberg, 1844 (uncertain > unassessed)
49. Species Actinoptychus asiaticus Tempère & Brun in Brun & Tempère, 1889 (uncertain > unassessed)
50. Species Actinoptychus aster Brun in Schmidt et al., 1892 (uncertain > unassessed)
51. Species Actinoptychus atlanticus (Kain & E.A. Schultze) Schmidt in Schmidt et al., 1892 accepted as Actinodiscus atlanticus Kain & Schultze, 1889 † (uncertain > unassessed)
52. Species Actinoptychus australis (Grunow) Andrews, 1979 accepted as Actinoptychus vulgaris var. australis Grunow in Van Heurck, 1883 (uncertain > unassessed)
53. Species Actinoptychus baccatus Brun, 1895 (uncertain > unassessed)
54. Species Actinoptychus barboi Brun, 1894 (uncertain > unassessed)
55. Species Actinoptychus barklyi fide Habirshaw (uncertain > unassessed)
56. Species Actinoptychus baxterii Pantocsek, 1903 (uncertain > unassessed)
57. Species Actinoptychus besselli F.W. Payne, 1922 (uncertain > unassessed)
58. Species Actinoptychus biformis Brun in Schmidt et al., 1890 (uncertain > unassessed)
59. Species Actinoptychus bifrons Schmidt in Schmidt et al., 1886 (uncertain > unassessed)
60. Species Actinoptychus bilingulatus ‘Grove Collection' according to Mills, 1933 (uncertain > unassessed)
61. Species Actinoptychus bipunctatus K.E. Lohman, 1941 (uncertain > unassessed)
62. Species Actinoptychus biseptenarius Ehrenberg, 1854 (uncertain > unassessed)
63. Species Actinoptychus bismarckii A. Schmidt, 1886 (uncertain > unassessed)
64. Species Actinoptychus biternarius Ehrenberg, 1843 (uncertain > unassessed)
65. Species Actinoptychus biternatus Ehrenberg, 1854 (uncertain > unassessed)
66. Species Actinoptychus boryanus Pantocsek, 1889 (uncertain > unassessed)
67. Species Actinoptychus brunii Schmidt in Schmidt et al., 1890 (uncertain > unassessed)
68. Species Actinoptychus calicinus Schmidt in Schmidt et al., 1888 (uncertain > unassessed)
69. Species Actinoptychus californicus Pantocsek, 1903 (uncertain > unassessed)
70. Species Actinoptychus campanulifer Schmidt, 1875 (uncertain > unassessed)
71. Species Actinoptychus capensis Grunow in Van Heurck, 1883 (uncertain > unassessed)
72. Species Actinoptychus cathedralis Brun, 1890 (uncertain > unassessed)
73. Species Actinoptychus cellulosus (Ehrenberg) M. Peragallo, 1897 accepted as Omphalopelta cellulosa Ehrenberg, 1844 (uncertain > unassessed)
74. Species Actinoptychus ceres Ehrenberg, 1844 (uncertain > unassessed)
75. Species Actinoptychus ceylanensis Leuduger-Fortmorel, 1879 (uncertain > unassessed)
76. Species Actinoptychus chenevierei Long, Fuge & Smith, 1946 (uncertain > unassessed)
77. Species Actinoptychus clavatus Brun in Schmidt et al., 1890 (uncertain > unassessed)
78. Species Actinoptychus clavifer Schumann, 1867 (uncertain > unassessed)
79. Species Actinoptychus clevei Schmidt in Schmidt et al., 1886 (uncertain > unassessed)
80. Species Actinoptychus coloradoi H. Peragallo in Tempère & H. Peragallo, 1909 (uncertain > unassessed)
81. Species Actinoptychus concentricus Schmidt in Schmidt et al., 1890 (uncertain > unassessed)
82. Species Actinoptychus constellatus Brun, 1895 (uncertain > unassessed)
83. Species Actinoptychus constrictus Grove & Sturt, 1887 (uncertain > unassessed)
84. Species Actinoptychus crepido Schmidt in Schmidt et al., 1890 (uncertain > unassessed)
85. Species Actinoptychus cruciatus Schumann, 1867 (uncertain > unassessed)
86. Species Actinoptychus crucitinus (uncertain > unassessed)
87. Species Actinoptychus decumanus ‘Schmidt' Forti in Tempère & Peragallo, 1910 (uncertain > unassessed)
88. Species Actinoptychus degenii Pantocsek, 1909 (uncertain > unassessed)
89. Species Actinoptychus delectus Schmidt in Schmidt et al., 1874 (uncertain > unassessed)
90. Species Actinoptychus delicatissimus Witt, 1885 (uncertain > unassessed)
91. Species Actinoptychus denarius Ehrenberg, 1843 (uncertain > unassessed)
92. Species Actinoptychus dilatatus Pantocsek, 1886 (uncertain > unassessed)
93. Species Actinoptychus dives (Ehrenberg) Ehrenberg (uncertain > unassessed)
94. Species Actinoptychus divisus ‘Kisselev' VanLandingham, 1967 (uncertain > unassessed)
95. Species Actinoptychus doljensis Jurilj, 1957 (uncertain > unassessed)
96. Species Actinoptychus duodenarius Ehrenberg accepted as Actinocyclus duodenarius (Ehrenberg) W. Smith, 1856 (uncertain > unassessed)
97. Species Actinoptychus ehrenbergii Grunow, 1867 (uncertain > unassessed)
98. Species Actinoptychus elegans Leuduger-Fortmorel, 1879 (uncertain > unassessed)
99. Species Actinoptychus elegans Ralfs in Pritchard, 1861 (uncertain > unassessed)
100. Species Actinoptychus erinaceus Tempère & Brun in Brun & Tempère, 1889 (uncertain > unassessed)
101. Species Actinoptychus erosus Castracane, 1886 (uncertain > unassessed)
102. Species Actinoptychus excellens Schumann, 1867 (uncertain > unassessed)
103. Species Actinoptychus flos-marina Brun, 1891 (uncertain > unassessed)
104. Species Actinoptychus frenguellii Müller-Melchers, 1951 (uncertain > unassessed)
105. Species Actinoptychus fuscus Grove & Sturt in Schmidt et al., 1888 (uncertain > unassessed)
106. Species Actinoptychus gallegosi Hanna & Grant, 1926 (uncertain > unassessed)
107. Species Actinoptychus geminus Schmidt in Schmidt et al., 1886 (uncertain > unassessed)
108. Species Actinoptychus gracilis Schumann, 1867 (uncertain > unassessed)
109. Species Actinoptychus grovei Thomas in Brun, J., Cleve, P.T., Grove, E., Rattray J., Tempère, J. & Thomas, 1890 (uncertain > unassessed)
110. Species Actinoptychus grunowii A. Schmidt in Schmidt et al., 1874 (uncertain > unassessed)
111. Species Actinoptychus guttatus (Østrup) M. Peragallo in H. Peragallo & M. Peragallo, 1911 accepted as Actinoptychus moronensis var. guttata Østrup, 1904 (uncertain > unassessed)
112. Species Actinoptychus harrensis Fenner, 1994 (uncertain > unassessed)
113. Species Actinoptychus heterostrophus A. Schmidt in Schmidt et al., 1875 (uncertain > unassessed)
114. Species Actinoptychus hexapterus Ehrenberg, 1843 (uncertain > unassessed)
115. Species Actinoptychus hispidus Grunow in Van Heurck, 1883 (uncertain > unassessed)
116. Species Actinoptychus hungaricus Pantocsek, 1886 (uncertain > unassessed)
117. Species Actinoptychus hüttlingerianus Truan y Luard & Witt, 1888 (uncertain > unassessed)
118. Species Actinoptychus imperator Pantocsek, 1892 (uncertain > unassessed)
119. Species Actinoptychus incertus (Grunow) Wolle, 1890 accepted as Actinocyclus incertus Grunow in Van Heurck, 1883 (uncertain > unassessed)
120. Species Actinoptychus incisa (Grunow in Schmidt et al.) F.W. Mills, 1933 accepted as Actinoptychus glabratus var. incisa Grunow in Van Heurck, 1883 (uncertain > unassessed)
121. Species Actinoptychus indeterminatus Long, Fuge & Smith, 1946 (uncertain > unassessed)
122. Species Actinoptychus indicus Brun, 1894 (uncertain > unassessed)
123. Species Actinoptychus inopinatus A. Schmidt in Schmidt et al., 1874 (uncertain > unassessed)
124. Species Actinoptychus intermedius A. Schmidt in Schmidt et al., 1886 (uncertain > unassessed)
125. Species Actinoptychus interpositus Brun, 1893 (uncertain > unassessed)
126. Species Actinoptychus interpunctatus Brightwell, 1860 (uncertain > unassessed)
127. Species Actinoptychus irregularis Grunow in Van Heurck, 1883 (uncertain > unassessed)
128. Species Actinoptychus japonicus Grunow in A. Schmidt et al., 1874 (uncertain > unassessed)
129. Species Actinoptychus japonicus (Castracane) M. Peragallo, 1897 accepted as Omphalopelta japonica Castracane, 1886 (uncertain > unassessed)
130. Species Actinoptychus jupiter Ehrenberg, 1843 (uncertain > unassessed)
131. Species Actinoptychus kernensis Hanna, 1932 (uncertain > unassessed)
132. Species Actinoptychus klavsenii Schmidt in Schmidt et al., 1893 (uncertain > unassessed)
133. Species Actinoptychus kraussii Schmidt in Schmidt et al., 1892 (uncertain > unassessed)
134. Species Actinoptychus kusnetzkianus Pantocsek, 1892 (uncertain > unassessed)
135. Species Actinoptychus leptomitos Pantocsek, 1886 (uncertain > unassessed)
136. Species Actinoptychus lobatus Brun, 1896 (uncertain > unassessed)
137. Species Actinoptychus lucidus Brun, 1894 (uncertain > unassessed)
138. Species Actinoptychus luna Janisch, 1862 (uncertain > unassessed)
139. Species Actinoptychus macraei Deby in Brun, Bergon, Deby & Tempère, 1891 (uncertain > unassessed)
140. Species Actinoptychus maculatus E.Grove & G.Sturt (uncertain > unassessed)
141. Species Actinoptychus maculosus Pantocsek, 1892 (uncertain > unassessed)
142. Species Actinoptychus madreporus Brun, 1896 (uncertain > unassessed)
143. Species Actinoptychus mambolensis Woodhead & Tweed, 1958 (uncertain > unassessed)
144. Species Actinoptychus marmoreus Brun in Schmidt et al., 1890 (uncertain > unassessed)
145. Species Actinoptychus marylandicus Andrews, 1974 (uncertain > unassessed)
146. Species Actinoptychus marylandicus (Brightwell) Schmidt in Schmidt et al., 1875 accepted as Triceratium marylandicum Brightwell, 1856 (uncertain > unassessed)
147. Species Actinoptychus meakinii VanLandingham, 1967 (uncertain > unassessed)
148. Species Actinoptychus microsticta (Grunow) Mertz, 1966 accepted as Actinoptychus undulatus f. microsticta Grunow in Van Heurck, 1883 (uncertain > unassessed)
149. Species Actinoptychus millsii Chenevière, 1934 (uncertain > unassessed)
150. Species Actinoptychus minor ‘Grunow in Van Heurck' VanLandingham, 1979 (uncertain > unassessed)
151. Species Actinoptychus mirabilis Leuduger-Fortmorel, 1879 (uncertain > unassessed)
152. Species Actinoptychus mirans Leuduger-Fortmorel, 1898 (uncertain > unassessed)
153. Species Actinoptychus mosaïca Brun, 1891 (uncertain > unassessed)
154. Species Actinoptychus muelleri Pantocsek, 1910 (uncertain > unassessed)
155. Species Actinoptychus neogradensis Pantocsek, 1886 (uncertain > unassessed)
156. Species Actinoptychus nicobaricus (Grunow) Andrews, 1979 accepted as Actinoptychus splendens var. nicobarica Grunow in Van Heurck, 1883 (uncertain > unassessed)
157. Species Actinoptychus nonarius Ehrenberg, 1843 (uncertain > unassessed)
158. Species Actinoptychus notabilis Pantocsek, 1892 (uncertain > unassessed)
159. Species Actinoptychus notabilis Brun in Schmidt et al., 1890 (uncertain > unassessed)
160. Species Actinoptychus numa ‘(Ehrenberg) Chase in Habirshaw et al., 1888' Mills, 1933 (uncertain > unassessed)
161. Species Actinoptychus octodenarius Ehrenberg, 1854 accepted as Actinocyclus octodenarius Ehrenberg, 1839 (uncertain > unassessed)
162. Species Actinoptychus octonarius (Ehrenberg) Kützing, 1844 accepted as Actinocyclus octonarius var. octonarius Ehrenberg, 1837 (uncertain > unassessed)
163. Species Actinoptychus oliveranus 'O'Meara' Mills, 1933 (uncertain > unassessed)
164. Species Actinoptychus omaruensis Grunow in Schmidt et al., 1888 (uncertain > unassessed)
165. Species Actinoptychus omphalopelta Grunow, 1867 (uncertain > unassessed)
166. Species Actinoptychus oppenoorthi Reinhold, 1937 (uncertain > unassessed)
167. Species Actinoptychus orientalis Kisselev, 1931 (uncertain > unassessed)
168. Species Actinoptychus pantocsekii Truan in Pantocsek, 1886 (uncertain > unassessed)
169. Species Actinoptychus papillo Brun in Brun & Tempère, 1889 (uncertain > unassessed)
170. Species Actinoptychus paradoxus Greville, 1863 (uncertain > unassessed)
171. Species Actinoptychus pardus (uncertain > unassessed)
172. Species Actinoptychus parvus Mann, 1925 (uncertain > unassessed)
173. Species Actinoptychus paynei (uncertain > unassessed)
174. Species Actinoptychus pellucidus Grunow in Van Heurck, 1883 (uncertain > unassessed)
175. Species Actinoptychus perennis Brun in Schmidt et al., 1890 (uncertain > unassessed)
176. Species Actinoptychus perisetosus (uncertain > unassessed)
177. Species Actinoptychus perplexus Hanna & Grant, 1926 (uncertain > unassessed)
178. Species Actinoptychus pethoei Pantocsek, 1889 (uncertain > unassessed)
179. Species Actinoptychus petitii Pantocsek, 1889 (uncertain > unassessed)
180. Species Actinoptychus pfitzeri Gründler in Schmidt et al., 1875 (uncertain > unassessed)
181. Species Actinoptychus planus Mann, 1907 (uncertain > unassessed)
182. Species Actinoptychus praetor Schmidt in Schmidt et al., 1886 (uncertain > unassessed)
183. Species Actinoptychus pseudoantistrophus M. Peragallo in Tempère & H. Peragallo, 1908 (uncertain > unassessed)
184. Species Actinoptychus punctatus (Ehrenberg) Tempère & H. Peragallo, 1889-1895 accepted as Omphalopelta punctata Ehrenberg, 1844 (1845) (uncertain > unassessed)
185. Species Actinoptychus punctulatus Pantocsek, 1886 (uncertain > unassessed)
186. Species Actinoptychus pyxidicula Krishtofovich, 1941 (uncertain > unassessed)
187. Species Actinoptychus quaternarius Ehrenberg, 1844 (uncertain > unassessed)
188. Species Actinoptychus quaternatus ‘Ehrenberg' Janisch, 1861 (uncertain > unassessed)
189. Species Actinoptychus quatuordenarius Ehrenberg, 1844 (uncertain > unassessed)
190. Species Actinoptychus quinarius ‘Ehrenberg' Janisch, 1862 (uncertain > unassessed)
191. Species Actinoptychus racemosus Schmidt in Schmidt et al., 1890 (uncertain > unassessed)
192. Species Actinoptychus radiolatus Grunow in Van Heurck, 1883 (uncertain > unassessed)
193. Species Actinoptychus radulus Mann, 1907 (uncertain > unassessed)
194. Species Actinoptychus raeanus Castracane, 1886 (uncertain > unassessed)
195. Species Actinoptychus ralfsii (uncertain > unassessed)
196. Species Actinoptychus ranunculus Brun in Schmidt et al., 1890 (uncertain > unassessed)
197. Species Actinoptychus rechingeri M. Peragallo in H. Peragallo & M. Peragallo, 1911 (uncertain > unassessed)
198. Species Actinoptychus reinholdi M. Hajós, 1968 (uncertain > unassessed)
199. Species Actinoptychus reticulatus Jurilj, 1957 (uncertain > unassessed)
200. Species Actinoptychus reticulatus Leuduger-Fortmorel, 1898 (uncertain > unassessed)
201. Species Actinoptychus reticulatus Pantocsek, 1886 (uncertain > unassessed)
202. Species Actinoptychus rotifer Leuduger-Fortmorel, 1898 (uncertain > unassessed)
203. Species Actinoptychus rotula Long, Fuge & Smith, 1946 (uncertain > unassessed)
204. Species Actinoptychus schmidtii Pantocsek, 1889 (uncertain > unassessed)
205. Species Actinoptychus sedenarius Ehrenberg accepted as Actinocyclus sedenarius Ehrenberg, 1839 (uncertain > unassessed)
206. Species Actinoptychus seductilis Schmidt in Schmidt et al., 1875 (uncertain > unassessed)
207. Species Actinoptychus segmentatus Brun in Schmidt et al., 1890 (uncertain > unassessed)
208. Species Actinoptychus semilaevis Grunow in Pantocsek, 1886 (uncertain > unassessed)
209. Species Actinoptychus semilevis Grunow in Pantocsek (uncertain > unassessed)
210. Species Actinoptychus semiocellatus Schumann, 1867 (uncertain > unassessed)
211. Species Actinoptychus semseyi Pantocsek, 1889 (uncertain > unassessed)
212. Species Actinoptychus senarius (Ehrenberg) Ehrenberg, 1843 accepted as Actinocyclus senarius Ehrenberg, 1838 (uncertain > unassessed)
213. Species Actinoptychus separatus Leuduger-Fortmorel, 1898 (uncertain > unassessed)
214. Species Actinoptychus septenarius Ehrenberg, 1853 (uncertain > unassessed)
215. Species Actinoptychus shrubsolianus (Castracane) M. Peragallo, 1897 accepted as Omphalopelta shrubsoliana Castracane, 1886 (uncertain > unassessed)
216. Species Actinoptychus sibiricus Paramonova, 1964 (uncertain > unassessed)
217. Species Actinoptychus signatus Long, Fuge & Smith, 1946 (uncertain > unassessed)
218. Species Actinoptychus similaris Sheshukova-Poretskaya & Gleser, 1964 (uncertain > unassessed)
219. Species Actinoptychus socius A. Schmidt in Schmidt et al., 1874 (uncertain > unassessed)
220. Species Actinoptychus solisi Hanna & Grant, 1926 (uncertain > unassessed)
221. Species Actinoptychus speciosus Meister, 1935 (uncertain > unassessed)
222. Species Actinoptychus spinifer Grunow in Schmidt et al., 1890 (uncertain > unassessed)
223. Species Actinoptychus spinifer Pantocsek, 1892 (uncertain > unassessed)
224. Species Actinoptychus spiniferus Grunow in Van Heurck, 1883 (uncertain > unassessed)
225. Species Actinoptychus spinosus (Brightwell) Ralfs in Pritchard, 1861 accepted as Actinocyclus spinosus Brightwell, 1860 (uncertain > unassessed)
226. Species Actinoptychus spinulosus Schmidt in Schmidt et al., 1890 (uncertain > unassessed)
227. Species Actinoptychus staubii Pantocsek, 1889 (uncertain > unassessed)
228. Species Actinoptychus sturii Pantocsek, 1886 (uncertain > unassessed)
229. Species Actinoptychus suavis Brun, 1896 (uncertain > unassessed)
230. Species Actinoptychus subangulatus Schmidt in Schmidt et al., 1888 (uncertain > unassessed)
231. Species Actinoptychus suborbicularis Grunow in Cleve & Möller, 1879 (uncertain > unassessed)
232. Species Actinoptychus subtilis Ehrenberg, 1873 (uncertain > unassessed)
233. Species Actinoptychus sumatrensis Leuduger-Fortmorel, 1892 (uncertain > unassessed)
234. Species Actinoptychus summissus Schmidt in Schmidt et al., 1874 (uncertain > unassessed)
235. Species Actinoptychus superbus ‘J.W. Bailey' according to Chase, 1885 (uncertain > unassessed)
236. Species Actinoptychus szabói Pantocsek, 1886 (uncertain > unassessed)
237. Species Actinoptychus taeniatus Hustedt, 1955 (uncertain > unassessed)
238. Species Actinoptychus taffi Hanna, 1927 (uncertain > unassessed)
239. Species Actinoptychus temperei A.W.F.Schmidt (uncertain > unassessed)
240. Species Actinoptychus tener (E.Grove & G.Sturt) E.Grove & G.Sturt accepted as Actinoptychus pulchellus var. tenera Grove & Sturt, 1887 (uncertain > unassessed)
241. Species Actinoptychus tenuis Strelnikova, 1974 (uncertain > unassessed)
242. Species Actinoptychus ternarius C.Janisch (uncertain > unassessed)
243. Species Actinoptychus ternarius (Ehrenberg) Kützing, 1844 accepted as Actinocyclus ternarius Ehrenberg, 1839 (uncertain > unassessed)
244. Species Actinoptychus ternatus ‘Ehrenberg' Janisch, 1861 (uncertain > unassessed)
245. Species Actinoptychus thumii (A.W.F.Schmidt) G.D.Hanna, 1932 accepted as Actinoptychus stella f. thumii Schmidt in Schmidt et al., 1886 (uncertain > unassessed)
246. Species Actinoptychus triacriformis Chin in Chin et al., 1980 (uncertain > unassessed)
247. Species Actinoptychus triangulatus (uncertain > unassessed)
248. Species Actinoptychus trifolium Tempère & Brun in Brun & Tempère, 1889 (uncertain > unassessed)
249. Species Actinoptychus trifurcatus Tempère & Brun in Brun & Tempère, 1889 (uncertain > unassessed)
250. Species Actinoptychus trigonus Schmidt in Schmidt et al., 1874 (uncertain > unassessed)
251. Species Actinoptychus trilineatus Boyer, 1922 (uncertain > unassessed)
252. Species Actinoptychus trilobatus Hajós, 1971 (uncertain > unassessed)
253. Species Actinoptychus trilunatus Brun, 1893 (uncertain > unassessed)
254. Species Actinoptychus triradiatus ‘(Roper) Ralfs in Pritchard' according to VanLandingham, 1967 accepted as Actinocyclus triradiatus Roper, 1858 (uncertain > unassessed)
255. Species Actinoptychus trivolva Brun, 1891 (uncertain > unassessed)
256. Species Actinoptychus tschestnovii Pantocsek, 1889 (uncertain > unassessed)
257. Species Actinoptychus tuberculatus Strelnikova, 1974 (uncertain > unassessed)
258. Species Actinoptychus tuberosus Leuduger-Fortmorel, 1879 (uncertain > unassessed)
259. Species Actinoptychus turgidus (Tempère & Brun) Tempère & Brun in Schmidt et al., 1892 accepted as Actinoptychus nitidus var. turgida Tempère in Brun & Tempère, 1889 (uncertain > unassessed)
260. Species Actinoptychus undulatus J.W.Bailey ex Hustedt, 1927 accepted as Actinocyclus undulatus J.W.Bailey, 1842 (uncertain > unassessed)
261. Species Actinoptychus undulatus ‘Ehrenberg' A. Schmidt, 1888 (uncertain > unassessed)
262. Species Actinoptychus undulatus Long, Fuge & Smith, 1946 (uncertain > unassessed)
263. Species Actinoptychus vancouveri Mackay in L.W. Bailey, 1924 (uncertain > unassessed)
264. Species Actinoptychus vanheurckii Pantocsek, 1886 (uncertain > unassessed)
265. Species Actinoptychus velatinum Schmidt in Schmidt et al., 1890 (uncertain > unassessed)
266. Species Actinoptychus velatus Ehrenberg, 1844 (uncertain > unassessed)
267. Species Actinoptychus vicenarius Ehrenberg, 1843 (uncertain > unassessed)
268. Species Actinoptychus virginicus (Grunow) Andrews, 1976 accepted as Actinoptychus vulgaris var. virginica Grunow in Van Heurck, 1883 (uncertain > unassessed)
269. Species Actinoptychus vlatinum Schmidt in Schmidt et al., 1890 (uncertain > unassessed)
270. Species Actinoptychus weissflogii Schmidt in Schmidt et al., 1874 (uncertain > unassessed)
271. Species Actinoptychus wilmottii Chenevière, 1934 (uncertain > unassessed)
272. Species Actinoptychus wittianus Truan y Luard & Witt, 1888 (uncertain > unassessed)
273. Species Actinoptychus wittii C.Janisch, 1886 (uncertain > unassessed)
274. Species Actinoptychus wollei M. Peragallo in Tempère & Peragallo, 1909 (uncertain > unassessed)

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