1. Species Paralia allisonii M.L.MacGillivary, 2012
2. Species Paralia crawfordii M.L.MacGillivary, 2012
3. Species Paralia ehrmanii M.L.MacGillivary, 2012
4. Species Paralia sulcata (Ehrenberg) Cleve, 1873
5. Species Paralia arenaria (Moore) Moisseeva, 1986 accepted as Melosira arenaria var. arenaria Moore ex Ralfs, 1843 (uncertain > unassessed)
6. Species Paralia capitata Sawai & Nagumo, 2005 (uncertain > unassessed)
7. Species Paralia clavigera (Grunow) Gleser, 1984 (uncertain > unassessed)
8. Species Paralia clavigera (Grunow) Harwood, 1989 (uncertain > unassessed)
9. Species Paralia clavigera (Grunow) Koizumi, 1992 (uncertain > unassessed)
10. Species Paralia complexa (Lohman) Andrews, 1976 accepted as Melosira complexa Lohman, 1948 (uncertain > unassessed)
11. Species Paralia concentrica Schmidt in Schmidt et al., 1892 (uncertain > unassessed)
12. Species Paralia cretacea (Jouse) Gleser, 1984 (uncertain > unassessed)
13. Species Paralia debyi Pantocsek, 1892 (uncertain > unassessed)
14. Species Paralia elliptica M.Garcia, 2003 (uncertain > unassessed)
15. Species Paralia fenestrata Sawai & Nagumo, 2005 (uncertain > unassessed)
16. Species Paralia hokkaideana Pantocsek, 1892 (uncertain > unassessed)
17. Species Paralia kochii (Pantocsek) Moiseeva in Moiseeva & Genkal, 1987 accepted as Melosira kochii Pantocsek, 1892 (uncertain > unassessed)
18. Species Paralia longispina S.Konno & R.W.Jordan, 2008 (uncertain > unassessed)
19. Species Paralia major (Grove) Frenguelli, 1936 accepted as Melosira major Grove in Schmidt et al., 1892 (uncertain > unassessed)
20. Species Paralia marina (W.Smith) Heiberg, 1863 accepted as Orthosira marina W. Smith, 1856 (uncertain > unassessed)
21. Species Paralia oamaruensis (Grove & Sturt) Harwood, 1989 accepted as Melosira oamaruensis Grove & Sturt, 1887 (uncertain > unassessed)
22. Species Paralia ornata Grunow (uncertain > unassessed)
23. Species Paralia pethoi Pantocsek, 1892 (uncertain > unassessed)
24. Species Paralia polaris (Grunow) Gleser, 1984 accepted as Melosira polaris Grunow, 1884 (uncertain > unassessed)
25. Species Paralia polycystinica Pantocsek, 1892 (uncertain > unassessed)
26. Species Paralia rossica Pantocsek, 1889 (uncertain > unassessed)
27. Species Paralia saratoviana (Pantocsek) De Toni, 1894 accepted as Melosira ornata var. saratoviana Pantocsek, 1889 (uncertain > unassessed)
28. Species Paralia scabrosa (E.V.Østrup) Moiseeva, 1986 accepted as Melosira scabrosa Østrup, 1908 (uncertain > unassessed)
29. Species Paralia selecta (A. Schmidt) Gleser in Gleser, Makarova, Moisseeva & Nikolaev, 1992 accepted as Melosira selecta Schmidt in Schmidt et al., 1892 (uncertain > unassessed)
30. Species Paralia separanda Schmidt in Schmidt et al., 1892 (uncertain > unassessed)
31. Species Paralia siberica (Grunow) Frenguelli, 1936 accepted as Melosira sulcata f. siberica Grunow in Van Heurck, 1882 (uncertain > unassessed)
32. Species Paralia sol (Ehrenberg) R.M.Crawford, 1979 (uncertain > unassessed)
33. Species Paralia sol (Kützing) Hemphill-Haley in Hemphill-Haley & Fourtanier, 1995 (uncertain > unassessed)
34. Species Paralia teres (Brun) Genkal & Moiseeva in Moiseeva & Genkal, 1987 accepted as Melosira teres Brun, 1892 (uncertain > unassessed)
35. Species Paralia thumii Schmidt in Schmidt et al., 1888 (uncertain > unassessed)
36. Species Paralia torulosa Gleser in Gleser, Makarova, Moisseeva & Nikolaev, 1992 (uncertain > unassessed)
37. Species Paralia varennarum (Heribaud) Loseva, 1982 accepted as Melosira varennarum M. Peragallo & Héribaud in Héribaud, 1893 (uncertain > unassessed)

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