• Monia J. E. Gray, 1850
• Monia (Isomonia) Dautzenberg & Fischer, 1897 represented as Isomonia Dautzenberg & H. Fischer, 1897
• Monia (Monia) J. E. Gray, 1850 represented as Monia J. E. Gray, 1850
• Monia (Tenuimonia) M. Huber, 2010 represented as Monia J. E. Gray, 1850
• Monia aculeata (O. F. Müller, 1776) accepted as Heteranomia squamula (Linnaeus, 1758)
• Monia aculeata var. laevis Dautzenberg & H. Fischer, 1912 accepted as Heteranomia squamula (Linnaeus, 1758)
• Monia alberti Dautzenberg & H. Fischer, 1897 accepted as Isomonia alberti (Dautzenberg & H. Fischer, 1897)
• Monia alternans (G. B. Sowerby I, 1846) †
• Monia cladocorae Parenzan, 1974 accepted as Heteranomia squamula (Linnaeus, 1758)
• Monia colon (J. E. Gray, 1850)
• Monia cymbula (Tate, 1886) † accepted as Anomia cymbula Tate, 1886 †
• Monia deliciosa Iredale, 1936
• Monia furcilla Marwick, 1928 † accepted as Monia zelandica (J. E. Gray, 1843)
• Monia glauca Monterosato, 1884 accepted as Monia squama (Gmelin, 1791) accepted as Pododesmus squama (Gmelin, 1791)
• Monia macrochisma (Deshayes, 1839) accepted as Pododesmus macrochisma (Deshayes, 1839)
• Monia nobilis (Reeve, 1859)
• Monia patelliformis (Linnaeus, 1761) accepted as Pododesmus patelliformis (Linnaeus, 1761)
• Monia squama (Gmelin, 1791) accepted as Pododesmus squama (Gmelin, 1791)
• Monia squama var. crassa Winckworth, 1922 accepted as Monia squama (Gmelin, 1791) accepted as Pododesmus squama (Gmelin, 1791)
• Monia timida Iredale, 1939
• Monia umbonata (A. Gould, 1861) accepted as Isomonia umbonata (A. Gould, 1861)
• Monia zelandica (J. E. Gray, 1843)
• Moniana Girard, 1856 accepted as Cyprinella Girard, 1856
• Moniana aurata Girard, 1856 accepted as Cyprinella proserpina (Girard, 1856)
• Moniana complanata Girard, 1856 accepted as Cyprinella lutrensis (Baird & Girard, 1853)
• Moniana couchi Girard, 1856 accepted as Cyprinella lutrensis (Baird & Girard, 1853)
• Moniana deliciosa Girard, 1856 accepted as Notropis texanus (Girard, 1856)
• Moniana formosa Girard, 1856 accepted as Cyprinella formosa (Girard, 1856)
• Moniana frigida Girard, 1856 accepted as Cyprinella lutrensis (Baird & Girard, 1853)
• Moniana gibbosa Girard, 1856 accepted as Cyprinella lutrensis (Baird & Girard, 1853)
• Moniana gracilis Girard, 1856 accepted as Cyprinella rutila (Girard, 1856)
• Moniana jugalis Cope, 1871 accepted as Cyprinella lutrensis (Baird & Girard, 1853)
• Moniana laetabilis Girard, 1856 accepted as Cyprinella lutrensis (Baird & Girard, 1853)
• Moniana leonina Girard, 1856 accepted as Cyprinella lutrensis (Baird & Girard, 1853)
• Moniana nitida Girard, 1856 accepted as Notropis braytoni Jordan & Evermann, 1896
• Moniana proserpina Girard, 1856 accepted as Cyprinella proserpina (Girard, 1856)
• Moniana pulchella Girard, 1856 accepted as Cyprinella lutrensis (Baird & Girard, 1853)
• Moniana rutila Girard, 1856 accepted as Cyprinella rutila (Girard, 1856)
• Moniana tristis Girard, 1856 accepted as Miniellus topeka (Gilbert, 1884)
• Pododesmus (Monia) J. E. Gray, 1850 accepted as Monia J. E. Gray, 1850
• Pododesmus (Monia) alternans (G. B. Sowerby I, 1846) accepted as Monia alternans (G. B. Sowerby I, 1846) †
• Pododesmus (Monia) zelandicus (J. E. Gray, 1843) represented as Monia zelandica (J. E. Gray, 1843)