1. Species Polystomella aculeata d'Orbigny, 1846 accepted as Elphidium aculeatum (d'Orbigny, 1846) (Opinion of Bogdanowicz and Fedorov (1932), Cushman (1939))
2. Species Polystomella advena Cushman, 1922 accepted as Elphidium advenum (Cushman, 1922) accepted as Elphidium advena (Cushman, 1922) (Opinion of Cushman (1930))
3. Species Polystomella alvareziana d'Orbigny, 1839 accepted as Elphidium alvarezianum (d'Orbigny, 1839) (Opinion of Cushman and Kellett (1929))
4. Species Polystomella angularis d'Orbigny, 1826 accepted as Polystomella angularis d'Orbigny, 1852 accepted as Elphidium craticulatum (Fichtel & Moll, 1798) (Nomen nudum)
5. Species Polystomella angularis d'Orbigny, 1852 accepted as Elphidium craticulatum (Fichtel & Moll, 1798) (In opinion of Venec-Peyre, 2005)
6. Species Polystomella arctica Parker & Jones, 1864 accepted as Elphidiella arctica (Parker & Jones, 1864) (unaccepted > superseded combination, Type species of Elphidiella)
7. Species Polystomella articulata d'Orbigny, 1839 accepted as Elphidium articulatum (d'Orbigny, 1839) (Opinion of Cushman (1930, 1939))
8. Species Polystomella berthelotiana d'Orbigny, 1839 accepted as Elphidium berthelotianum (d'Orbigny, 1839) (Opinion of Cushman (1939))
9. Species Polystomella complanata d'Orbigny, 1839 accepted as Elphidium complanatum (d'Orbigny, 1839) (Opinion of Cushman (1939))
10. Species Polystomella craticulata (Fichtel & Moll, 1798) accepted as Elphidium craticulatum (Fichtel & Moll, 1798)
11. Species Polystomella crispa (Linnaeus, 1758) accepted as Elphidium crispum (Linnaeus, 1758)
12. Species Polystomella decipiens Costa, 1856 accepted as Elphidium decipiens (O.G.Costa, 1856) (Opinion of Cushman (1939))
13. Species Polystomella discoidalis d'Orbigny, 1839 accepted as Elphidium discoidale (d'Orbigny, 1839) (Opinion of Cushman (1930, 1939), Hofker (1964))
14. Species Polystomella excavata Terquem, 1875 accepted as Elphidium excavatum (Terquem, 1875) (Opinion of Lévy et al. (1975))
15. Species Polystomella fichtelliana d'Orbigny, 1846 accepted as Elphidium fichtellianum (d'Orbigny, 1846) accepted as Elphidium fichtelianum (d'Orbigny, 1846) (Opinion of Cushman (1939))
16. Species Polystomella fimbriatula Cushman, 1918 accepted as Elphidium fimbriatulum (Cushman, 1918) † (Opinion of Cole (1932), Cushman (1939))
17. Species Polystomella gaimardii d'Orbigny, 1826 accepted as Polystomella gaimardi d'Orbigny in Fornasini, 1904 (Nomen nudum)
18. Species Polystomella gibba Schultze, 1854 accepted as Elphidium gibba (Schultze, 1854) (Opinion of Cushman (1939) [as E. gibbum but gibba: 'hump' is a noun not an adjective])
19. Species Polystomella hedleyi Jensen, 1905 accepted as Elphidium hedleyi (Jensen, 1905) (Opinion of Cushman (1939))
20. Species Polystomella imperatrix Brady, 1881 accepted as Parrellina imperatrix (Brady, 1881) (Type species of Parrellina)
21. Species Polystomella jenseni Cushman, 1924 accepted as Elphidium jenseni (Cushman, 1924) accepted as Elphidium fichtellianum (d'Orbigny, 1846) accepted as Elphidium fichtelianum (d'Orbigny, 1846) (Opinion of Cushman (1933, 1939))
22. Species Polystomella lanieri d'Orbigny, 1839 accepted as Elphidium lanieri (d'Orbigny, 1839) (Opinion of Cushman ( 1930))
23. Species Polystomella lessonii d'Orbigny, 1839 accepted as Elphidium lessonii (d'Orbigny, 1839) (Opinion of Cushman (1930, 1939))
24. Species Polystomella macella (Fichtel & Moll, 1798) accepted as Elphidium macellum (Fichtel & Moll, 1798)
25. Species Polystomella millettii Heron-Allen & Earland, 1915 accepted as Cristatavultus milletti (Heron-Allen & Earland, 1915) accepted as Elphidium milletti (Heron-Allen & Earland, 1915)
26. Species Polystomella oceanensis d'Orbigny, 1826 accepted as Polystomella oceanensis d'Orbigny in Fornasini, 1904 accepted as Elphidium oceanense (d'Orbigny in Fornasini, 1904) (Nomen nudum)
27. Species Polystomella oceanensis d'Orbigny in Fornasini, 1904 accepted as Elphidium oceanense (d'Orbigny in Fornasini, 1904) (Opinion of Cushman (1939))
28. Species Polystomella oweniana d'Orbigny, 1839 accepted as Elphidium owenianum (d'Orbigny, 1839) (Opinion of Cushman (1929, 1939))
29. Species Polystomella planulata Lamarck, 1822 accepted as Elphidium planulatum (Lamarck, 1822)
30. Species Polystomella poeyana d'Orbigny, 1839 accepted as Elphidium poeyanum (d'Orbigny, 1839) accepted as Elphidiononion poeyanum (d'Orbigny, 1839) accepted as Cribroelphidium poeyanum (d'Orbigny, 1839) (Opinion of Cushman (1930, 1939))
31. Species Polystomella punctata Terquem, 1878 accepted as Elphidium punctatum (Terquem, 1878) (Opinion of Cushman (1939))
32. Species Polystomella sagra d'Orbigny, 1839 accepted as Elphidium sagrai (d'Orbigny, 1839) accepted as Elphidium sagra (d'Orbigny, 1839) (Opinion of Cushman ( 1930))
33. Species Polystomella semistriata d'Orbigny, 1852 accepted as Elphidium semistriatum (d'Orbigny, 1852) † (Opinion of Cushman (1939))
34. Species Polystomella sibirica Goës, 1894 accepted as Elphidiella sibirica (Goës, 1894) (Opinion of Cushman (1939))
35. Species Polystomella striatopunctata (Fichtel & Moll, 1798) accepted as Elphidium striatopunctatum (Fichtel & Moll, 1798)
36. Species Polystomella subnodosa (Münster, 1838) accepted as Elphidium subnodosum (Münster, 1838) †
37. Species Polystomella umbilicatula (Walker & Jacob, 1798) accepted as Elphidium umbilicatulum (Walker & Jacob, 1798) accepted as Nonion umbilicatulum (Walker & Jacob, 1798)
38. Species Polystomella venusta Schultze, 1854 accepted as Elphidium venustum (Schultze, 1854) (unaccepted > superseded combination, Genus is subjective junior synonym of Elphidium)
39. Species Polystomella verriculata Brady, 1881 accepted as Parrellina verriculata (Brady, 1881) (Opinion of Parker (1958), Jones (1994))
40. Species Polystomella vortex (Fichtel & Moll, 1798) accepted as Lenticulina vortex (Fichtel & Moll, 1798)
41. Species Polystomella crenulata MacGillivray, 1843 (uncertain > nomen dubium, No types, no figures)
42. Species Polystomella gaimardi d'Orbigny in Fornasini, 1904 (uncertain > taxon inquirendum, Opinion of Cushman (1939) [Peneroplis?])
43. Species Polystomella gulielminae MacGillivray, 1843 (uncertain > nomen dubium, No types, no figures)
44. Species Polystomella margaritacea Blainville, 1824 (uncertain > nomen dubium)
45. Species Polystomella nautilina MacGillivray, 1843 (uncertain > nomen dubium, No types, no figures)
46. Species Polystomella umbilicata d'Orbigny in Fornasini, 1904 (uncertain > nomen dubium, Opinion of Cushman (1939))

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