1. Species Omphalina andrewsae Pilsbry, 1895 accepted as Mesomphix andrewsae (Pilsbry, 1895) (original combination)
2. Species Omphalina bilineata (L. Pfeiffer, 1846) accepted as Mesomphix bilineatus (L. Pfeiffer, 1846) (chresonym)
3. Species Omphalina cuprea Rafinesque, 1831 accepted as Mesomphix cupreus (Rafinesque, 1831) (original combination)
4. Species Omphalina friabilis (W. G. Binney, 1857) accepted as Mesomphix friabilis (W. G. Binney, 1857) (unaccepted combination)
5. Species Omphalina fuliginosa (A. Binney, 1841) accepted as Mesomphix cupreus (Rafinesque, 1831) (junior synonym)
6. Species Omphalina guildingi (Bland, 1865) accepted as Happiella guildingi (Bland, 1865) (unaccepted combination)
7. Species Omphalina inornata (Say, 1822) accepted as Mesomphix inornatus (Say, 1822) (unaccepted > superseded combination)
8. Species Omphalina laevigata (A. Férussac, 1821) accepted as Mesomphix vulgatus H. B. Baker, 1933 (unaccepted > junior homonym)
9. Species Omphalina lucubrata (Say, 1829) accepted as Mesomphix lucubratus (Say, 1829) (unaccepted > superseded combination)
10. Species Omphalina martensiana Pilsbry, 1904 accepted as Mesomphix martensianus (Pilsbry, 1904) (unaccepted > superseded combination)
11. Species Omphalina modesta E. von Martens, 1892 accepted as Mesomphix modestus (E. von Martens, 1892) (unaccepted > superseded combination, basionym)
12. Species Omphalina montereyensis Pilsbry, 1899 accepted as Patulopsis montereyensis (Pilsbry, 1899) (unaccepted > superseded combination)
13. Species Omphalina pilsbryi G. H. Clapp, 1904 accepted as Mesomphix pilsbryi (G. H. Clapp, 1904) (original combination)
14. Species Omphalina pittieri Bartsch, 1909 accepted as Mesomphix pittieri (Bartsch, 1909) (original combination)
15. Species Omphalina rugeli (W. G. Binney, 1879) accepted as Mesomphix rugeli (W. G. Binney, 1879) (unaccepted combination)
16. Species Omphalina salleana E. von Martens, 1892 accepted as Patulopsis salleana (E. von Martens, 1892) (unaccepted > superseded combination, basionym)
17. Species Omphalina sculpta E. von Martens, 1892 accepted as Patulopsis sculptus (E. von Martens, 1892) (unaccepted > superseded combination, basionym)
18. Species Omphalina laminarum T. D. A. Cockerell, 1906 † (uncertain > taxon inquirendum)
19. Species Omphalina oreodontis T. D. A. Cockerell & J. Henderson, 1912 † (uncertain > taxon inquirendum)

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