1. Subgenus Cyclostremiscus (Ponocyclus) Pilsbry, 1953
2. Species Cyclostremiscus adamsi (Bartsch, 1911)
3. Species Cyclostremiscus albachiarae Perugia, 2015
4. Species Cyclostremiscus anxius (Hedley, 1909)
5. Species Cyclostremiscus azuerensis Pilsbry & Olsson, 1952
6. Species Cyclostremiscus bailyi (Hertlein & A. M. Strong, 1951)
7. Species Cyclostremiscus balboa Pilsbry & Olsson, 1945
8. Species Cyclostremiscus baldridgae (Bartsch, 1911)
9. Species Cyclostremiscus bifrontia (P. P. Carpenter, 1857)
10. Species Cyclostremiscus calameli (Jousseaume, 1872)
11. Species Cyclostremiscus cerrosensis (Bartsch, 1907)
12. Species Cyclostremiscus colombianus Pilsbry & Olsson, 1945
13. Species Cyclostremiscus coronatus (P. P. Carpenter, 1857)
14. Species Cyclostremiscus cubanus (Pilsbry & Aguayo, 1933)
15. Species Cyclostremiscus dalli (K. J. Bush, 1897)
16. Species Cyclostremiscus diminutus Rubio, Rolán & Pelorce, 2011
17. Species Cyclostremiscus diomedeae (Bartsch, 1911)
18. Species Cyclostremiscus euglyptus Aguayo & Borro, 1946
19. Species Cyclostremiscus exigua (C. B. Adams, 1852)
20. Species Cyclostremiscus gallo Pilsbry & Olsson, 1945
21. Species Cyclostremiscus gordanus (Hertlein & A. M. Strong, 1951)
22. Species Cyclostremiscus hendersoni (Dall, 1927)
23. Species Cyclostremiscus janus (C. B. Adams, 1852)
24. Species Cyclostremiscus jeannae Pilsbry & McGinty, 1946
25. Species Cyclostremiscus lirulatus (P. P. Carpenter, 1857)
26. Species Cyclostremiscus lowei (F. Baker, G. D. Hanna & A. M. Strong, 1938)
27. Species Cyclostremiscus madreensis (F. Baker, G. D. Hanna & A. M. Strong, 1938)
28. Species Cyclostremiscus major Olsson & M. Smith, 1951
29. Species Cyclostremiscus microstriatus Rubio, Rolán & H. G. Lee, 2011
30. Species Cyclostremiscus mohicanus Simone, 2012
31. Species Cyclostremiscus multiliratus Rubio, Rolán & E. F. Garcia, 2011
32. Species Cyclostremiscus nodiferus Pilsbry & Olsson, 1952
33. Species Cyclostremiscus nodosus (P. P. Carpenter, 1857)
34. Species Cyclostremiscus nummus Pilsbry & Olsson, 1952
35. Species Cyclostremiscus panamensis (C. B. Adams, 1852)
36. Species Cyclostremiscus parvus (C. B. Adams, 1852)
37. Species Cyclostremiscus pauli Pilsbry & Olsson, 1952
38. Species Cyclostremiscus pentagonus (Gabb, 1873)
39. Species Cyclostremiscus perparvus (C. B. Adams, 1852)
40. Species Cyclostremiscus peruvianus Pilsbry & Olsson, 1945
41. Species Cyclostremiscus planospira Pilsbry & Olsson, 1945
42. Species Cyclostremiscus planospiratus (P. P. Carpenter, 1857)
43. Species Cyclostremiscus psix Pilsbry & Olsson, 1952
44. Species Cyclostremiscus spiceri (F. Baker, G. D. Hanna & A. M. Strong, 1938)
45. Species Cyclostremiscus spiritualis (F. Baker, G. D. Hanna & A. M. Strong, 1938)
46. Species Cyclostremiscus suppressus (Dall, 1889)
47. Species Cyclostremiscus taigai (Hertlein & A. M. Strong, 1951)
48. Species Cyclostremiscus tenuisculptus (P. P. Carpenter, 1864)
49. Species Cyclostremiscus tricarinatus (C. B. Adams, 1852) (accepted > unreplaced junior homonym, junior secondary homonym of Cyclostremiscus tricarinatus (Defrance, 1824))
50. Species Cyclostremiscus trigonatus (P. P. Carpenter, 1857)
51. Species Cyclostremiscus trilix (K. J. Bush, 1885)
52. Species Cyclostremiscus unicornis (Pilsbry & Olsson, 1945)
53. Species Cyclostremiscus valvatoides (C. B. Adams, 1852)
54. Species Cyclostremiscus vanbruggeni De Jong & Coomans, 1988
55. Species Cyclostremiscus veleronis (A. M. Strong & Hertlein, 1947)
56. Species Cyclostremiscus verreauxii (P. Fischer, 1857)
57. Species Cyclostremiscus xantusi (Bartsch, 1907)
58. Subgenus Cyclostremiscus (Pachystremiscus) Olsson & McGinty, 1958 accepted as Lodderena Iredale, 1924
59. Species Cyclostremiscus anxium [sic] accepted as Cyclostremiscus anxius (Hedley, 1909) (incorrect gender ending)
60. Species Cyclostremiscus baldridgei [sic] accepted as Cyclostremiscus baldridgae (Bartsch, 1911) (misspelling)
61. Species Cyclostremiscus bartschi Pilsbry & Olsson, 1945 accepted as Cyclostremiscus pauli Pilsbry & Olsson, 1952 (invalid: junior homonym of Cyclostremiscus bartschi Hertlein & Strong, 1939; C. pauli is a replacement name)
62. Species Cyclostremiscus bartschi A. M. Strong & Hertlein, 1939 accepted as Cyclostremiscus veleronis (A. M. Strong & Hertlein, 1947) (secondary homonym of Cyclostrema bartschi Mansfield, 1930; C. veleronis is a replacement name)
63. Species Cyclostremiscus beauii (P. Fischer, 1857) accepted as Circulus angulatus (A. Adams, 1850)
64. Species Cyclostremiscus bermudezi Aguayo & Borro, 1946 accepted as Orbitestella bermudezi (Aguayo & Borro, 1946)
65. Species Cyclostremiscus caraboboensis Weisbord, 1962 accepted as Tornus caraboboensis (Weisbord, 1962) (original combination)
66. Species Cyclostremiscus cosmius (Bartsch, 1907) accepted as Circulus cosmius Bartsch, 1907
67. Species Cyclostremiscus crassilabris Aguayo & Borro, 1946 accepted as Anticlimax crassilabris (Aguayo & Borro, 1946) (original combination)
68. Species Cyclostremiscus dariae Liuzzi & Zucchi Stolfa, 1979 accepted as Orbitestella dariae (Liuzzi & Zucchi Stolfa, 1979)
69. Species Cyclostremiscus emeryi Ladd, 1966 accepted as Lodderena emeryi (Ladd, 1966)
70. Species Cyclostremiscus humboldti Hertlein & A. M. Strong, 1951 accepted as Aorotrema humboldti (Hertlein & A. M. Strong, 1951)
71. Species Cyclostremiscus humilis (K. J. Bush, 1897) accepted as Cyclostremella humilis K. J. Bush, 1897
72. Species Cyclostremiscus novemcarinatus (Melvill, 1906) accepted as Lodderia novemcarinata (Melvill, 1906) accepted as Circulus novemcarinatus (Melvill, 1906)
73. Species Cyclostremiscus ornatus Olsson & McGinty, 1958 accepted as Lodderena ornata (Olsson & McGinty, 1958) (original combination)
74. Species Cyclostremiscus pachynepion Pilsbry & Olsson, 1945 accepted as Lodderena pachynepion (Pilsbry & Olsson, 1945)
75. Species Cyclostremiscus pulchellus Olsson & McGinty, 1958 accepted as Lodderena pulchella (Olsson & McGinty, 1958) (original combination)
76. Species Cyclostremiscus schrammii (P. Fischer, 1857) accepted as Tornus schrammii (P. Fischer, 1857) (unaccepted > superseded combination)
77. Species Cyclostremiscus solitarius Hertlein & Allison, 1968 accepted as Lodderena ornata (Olsson & McGinty, 1958)
78. Species Cyclostremiscus striatus Kay, 1979 accepted as Lodderena striata (Kay, 1979) (original combination)

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