1. Species Sinployea adposita (Mousson, 1870)
2. Species Sinployea allecta (J. C. Cox, 1870)
3. Species Sinployea andrewi Solem, 1983
4. Species Sinployea angularis Solem, 1983
5. Species Sinployea atiensis (Pease, 1871)
6. Species Sinployea aunuuana Solem, 1983
7. Species Sinployea avanaensis Solem, 1983
8. Species Sinployea canalis (Garrett, 1872)
9. Species Sinployea clausa Solem, 1983
10. Species Sinployea clista Solem, 1983
11. Species Sinployea complementaria (Mousson, 1865)
12. Species Sinployea conica (Odhner, 1922)
13. Species Sinployea decorticata (Garrett, 1872)
14. Species Sinployea descendens (I. Rensch, 1937)
15. Species Sinployea ellicensis Solem, 1983
16. Species Sinployea euryomphala (Solem, 1959)
17. Species Sinployea godeffroyana Solem, 1983
18. Species Sinployea harveyensis (Garrett, 1872)
19. Species Sinployea inermis (Mousson, 1870)
20. Species Sinployea intensa (Iredale, 1941)
21. Species Sinployea intermedia (Odhner, 1917)
22. Species Sinployea intermedia Solem, 1983 (accepted > unreplaced junior homonym)
23. Species Sinployea irregularis (Garrett, 1887)
24. Species Sinployea kuntzi (Solem, 1960)
25. Species Sinployea kusaieana Solem, 1983
26. Species Sinployea lamellicosta (Garrett, 1884)
27. Species Sinployea lauensis Solem, 1983
28. Species Sinployea modicella (Deshayes, 1850)
29. Species Sinployea montana Solem, 1983
30. Species Sinployea muri Brook, 2010
31. Species Sinployea navutuensis Solem, 1983
32. Species Sinployea neglecta Solem, 1983
33. Species Sinployea nissani (Dell, 1955)
34. Species Sinployea novopommerana (I. Rensch, 1937)
35. Species Sinployea otareae (Garrett, 1872)
36. Species Sinployea peasei Solem, 1983
37. Species Sinployea pitcairnensis Preece, 1995
38. Species Sinployea planospira (Garrett, 1881)
39. Species Sinployea princei (Liardet, 1876)
40. Species Sinployea proxima (Garrett, 1872)
41. Species Sinployea pseudovicaria Solem, 1983
42. Species Sinployea recursa Solem, 1983
43. Species Sinployea rotumana (E. A. Smith, 1897)
44. Species Sinployea rudis (Garrett, 1872)
45. Species Sinployea solomonensis (W. F. Clapp, 1923)
46. Species Sinployea tahitiensis Solem, 1983
47. Species Sinployea taipara Brook, 2010
48. Species Sinployea tenuicostata (Garrett, 1872)
49. Species Sinployea titikaveka Brook, 2010
50. Species Sinployea tupapa Brook, 2010
51. Species Sinployea vicaria (Mousson, 1871)
52. Species Sinployea youngi (Garrett, 1872)
53. Species Sinployea goeldii (Thiele, 1927) accepted as Radiodiscus goeldii (Thiele, 1927) (unaccepted > superseded combination)

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