1. Species Mysia marchali Cosel, 1995
2. Species Mysia pacifica Tokunaga, 1906 †
3. Species Mysia pellucida (Tate, 1891)
4. Species Mysia undata (Pennant, 1777)
5. Subgenus Mysia (Felania) Récluz, 1851 accepted as Felania Récluz, 1851 accepted as Diplodonta (Felania) Récluz, 1851 represented as Diplodonta Bronn, 1831
   1. Species Mysia (Felania) adamsi Angas, 1868 accepted as Numella adamsi (Angas, 1868) accepted as Microstagon adamsi (Angas, 1868) (unaccepted > superseded combination)
   2. Species Mysia (Felania) jacksonensis Angas, 1868 accepted as Numella jacksonensis (Angas, 1868) accepted as Microstagon jacksonensis (Angas, 1868) (unaccepted > superseded combination)
6. Subgenus Mysia (Lajonkairea) Jukes-Browne, 1910 accepted as Lajonkairia Deshayes, 1855 (unaccepted > superseded rank)
7. Species Mysia abbreviata A. Gould, 1861 accepted as Joannisiella abbreviata (A. Gould, 1861) (original combination)
8. Species Mysia adamsi Angas, 1868 accepted as Numella adamsi (Angas, 1868) accepted as Microstagon adamsi (Angas, 1868) (unaccepted > superseded combination)
9. Species Mysia ampla F. W. Hutton, 1885 † accepted as Felaniella ampla (F. W. Hutton, 1885) † accepted as Zemysia ampla (F. W. Hutton, 1885) † (superseded combination)
10. Species Mysia carolinensis Conrad, 1875 † accepted as Diplodonta nucleiformis (W. Wagner, 1840) †
11. Species Mysia dolabrata A. Gould, 1861 accepted as Felaniella dolabrata (A. Gould, 1861)
12. Species Mysia elegans (H. Adams, 1870) accepted as Lajonkairia elegans (H. Adams, 1870)
13. Species Mysia figlina A. Gould, 1861 accepted as Felaniella usta (A. Gould, 1861)
14. Species Mysia indica H. Adams & A. Adams, 1857 (unaccepted > nomen nudum)
15. Species Mysia irradiata Cossmann, 1887 † accepted as Diplodonta irradiata (Cossmann, 1887) † (unaccepted > superseded combination)
16. Species Mysia jacksonensis Angas, 1868 accepted as Numella jacksonensis (Angas, 1868) accepted as Microstagon jacksonensis (Angas, 1868) (unaccepted > superseded combination)
17. Species Mysia montagui Leach, 1847 (unaccepted > nomen nudum)
18. Species Mysia morleti Cossmann, 1887 † accepted as Diplodonta morleti (Cossmann, 1887) † (unaccepted > superseded combination)
19. Species Mysia nucleiformis W. Wagner, 1840 † accepted as Diplodonta nucleiformis (W. Wagner, 1840) † (unaccepted > superseded combination)
20. Species Mysia segregata Cossmann, 1887 † accepted as Bruetia segregata (Cossmann, 1887) † (unaccepted > superseded combination)
21. Species Mysia subquadrata Gabb, 1873 † accepted as Phlyctiderma gabbi (Dall, 1900) † (invalid: junior homonym of Mysia subquadrata Carpenter, 1856; Diplodonta gabbi is a replacement name)
22. Species Mysia tumida H. Adams, 1871 accepted as Lajonkairia elegans (H. Adams, 1870) (unaccepted > junior subjective synonym)
23. Species Mysia usta A. Gould, 1861 accepted as Felaniella usta (A. Gould, 1861) (original combination)
24. Species Mysia capuloides Gabb, 1873 † (uncertain > unassessed)
25. Species Mysia obliqua A. Gould, 1861 (uncertain > taxon inquirendum)
26. Species Mysia parilis Conrad, 1860 † (uncertain > unassessed)
27. Species Mysia parilis Conrad, 1866 † (uncertain > unassessed, junior homonym of Mysia parilis Conrad, 1860)

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