• Helix (Isthmia) J. E. Gray, 1821 accepted as Vertigo (Isthmia) J. E. Gray, 1821 represented as Vertigo O. F. Müller, 1773
• Helix (Isthmia) cylindrica J. E. Gray, 1821 accepted as Vertigo pygmaea (Draparnaud, 1801)
• Isthmia C.A. Agardh, 1832
• Isthmia J. E. Gray, 1821 accepted as Vertigo (Isthmia) J. E. Gray, 1821 represented as Vertigo O. F. Müller, 1773
• Isthmia africana Ehrenberg, 1844 (uncertain > unassessed)
• Isthmia bollesiana E. S. Morse, 1865 accepted as Vertigo bollesiana (E. S. Morse, 1865)
• Isthmia capensis Grunow in Schmidt et al., 1888 (uncertain > unassessed)
• Isthmia catenata Meneghini (uncertain > unassessed)
• Isthmia corpulenta E. S. Morse, 1865 accepted as Vertigo modesta (Say, 1824)
• Isthmia domuslaterariae Reinhold, 1937 (uncertain > unassessed)
• Isthmia dubia R. B. Newton & G. F. Harris, 1894 † accepted as Acanthopupa dubia (Newton & G. F. Harris, 1894) †
• Isthmia enervis Ehrenberg, 1838
• Isthmia enervis f. intermedia Grunow, 1887 (uncertain > unassessed)
• Isthmia enervis var. capensis Grunow, 1877 (uncertain > unassessed)
• Isthmia enervis var. enervis Ag., 1832 (uncertain > unassessed)
• Isthmia enervis var. georgica Reinsch, 1890 (uncertain > unassessed)
• Isthmia enervis var. gracilis Ehrenberg, 1838 (uncertain > unassessed)
• Isthmia enervis var. intermedia (Grunow) (uncertain > unassessed)
• Isthmia enervis var. japonica Castracane, 1886 (uncertain > unassessed)
• Isthmia enervis var. schmidtii Heiden (uncertain > unassessed)
• Isthmia enervis var. subcylindica Taylor
• Isthmia enervis var. subcylindrica Ralfs, 1846 (uncertain > unassessed)
• Isthmia filiformis (Ehrenberg) Meneghini (uncertain > unassessed)
• Isthmia fortii Forti & Schulz, 1932 (uncertain > unassessed)
• Isthmia gigantea M. Peragallo in Tempère & Peragallo, 1908 (uncertain > unassessed)
• Isthmia inermis Ehrenberg
• Isthmia intermedia Grunow, 1889 (uncertain > unassessed)
• Isthmia japonica (Castracane) Sournia, 1968 accepted as Isthmia enervis var. japonica Castracane, 1886
• Isthmia johnsonii Schmidt fide Tempère & Peragallo, 1912 (uncertain > unassessed)
• Isthmia lindigiana Grunow & Eulenstein in Grunow, 1867 (uncertain > unassessed)
• Isthmia membranacea Cleve, 1891 (uncertain > unassessed)
• Isthmia minima Harvey & Bailey, 1862 (uncertain > unassessed)
• Isthmia nervosa Kützing, 1844
• Isthmia nervosa f. micropora Cleve-Euler in Cleve-Euler & Hessland, 1948 (uncertain > unassessed)
• Isthmia nervosa f. nervosa Kützing, 1844 (uncertain > unassessed)
• Isthmia nervosa var. nankoorensis Grunow, 1867 (uncertain > unassessed)
• Isthmia obliquata (J.E.Smith) C.Agardh, 1832 accepted as Diatoma obliquatum Lyngbye, 1819
• Isthmia obliquata var. tenuior Agardh, 1832 (uncertain > unassessed)
• Isthmia palangula (de Boissy, 1848) † accepted as Vertigo palangula (de Boissy, 1848) †
• Isthmia polymorpha Montagne, 1840 (uncertain > unassessed)
• Isthmia reticularis Brun, 1896 (uncertain > unassessed)
• Isthmia rothi Reinhardt, 1916 accepted as Truncatellina rothi (Reinhardt, 1916) accepted as Truncatellina cylindrica (A. Férussac, 1807)
• Isthmia sardoa Zanon, 1948 (uncertain > unassessed)
• Isthmia schmidtii (Heiden) Simonsen, 1992 accepted as Isthmia enervis var. schmidtii Heiden
• Isthmia squinaboli (Forti) Forti
• Isthmia squinaboli var. crassior Forti, 1912 (uncertain > unassessed)
• Isthmia squinaboli var. squinaboli Forti in Tempère & Peragallo, 1912 (uncertain > unassessed)
• Isthmia stomatophora (Turpin) Meneghini (uncertain > unassessed)
• Isthmia strobeli (Gredler, 1856) accepted as Truncatellina callicratis (Scacchi, 1833)
• Isthmia szaboi Pantocsek
• Isthmia szaboi var. gigantea M. Peragallo in Tempère & Peragallo, 1908 (uncertain > unassessed)
• Isthmia szaboi var. szaboi Pantocsek, 1886 (uncertain > unassessed)
• Isthmia tenuicornis Grunow, 1889 (uncertain > unassessed)
• Isthmia ventricosa E. S. Morse, 1865 accepted as Vertigo ventricosa (E. S. Morse, 1865)
• Isthmia vertebrata (Brébisson) Meneghini (uncertain > unassessed)
• Isthmia vesiculosa (Agardh) Agardh, 1832 accepted as Diatoma vesiculosum Agardh, 1824
• Isthmia vitrea Kitton, 1873 (uncertain > unassessed)
• Pupa (Isthmia) J. E. Gray, 1821 accepted as Vertigo O. F. Müller, 1773
• Pupa (Isthmia) lentilii K. Miller, 1900 † accepted as Truncatellina lentilii (K. Miller, 1900) †
• Pupa (Isthmia) minutula Clessin, 1912 † accepted as Truncatellina lentilii (K. Miller, 1900) †
• Pupa (Isthmia) miocaenica Clessin, 1912 † accepted as Truncatellina lentilii (K. Miller, 1900) †
• Pupa (Isthmia) opisthodon Reinhardt, 1879 accepted as Truncatellina opisthodon (Reinhardt, 1879)
• Pupa (Isthmia) podolica Łomnicki, 1886 † accepted as Truncatellina podolica (Łomnicki, 1886) †
• Vertigo (Isthmia) J. E. Gray, 1821 represented as Vertigo O. F. Müller, 1773
• Vertigo (Isthmia) circumlabiata Schileyko, 1984 accepted as Vertigo circumlabiata Schileyko, 1984
• Vertigo (Isthmia) clavella Reinhardt, 1876 accepted as Truncatellina claustralis (Gredler, 1856)
• Vertigo (Isthmia) hirasei Pilsbry, 1901 represented as Vertigo hirasei Pilsbry, 1901
• Vertigo (Isthmia) kushiroensis Pilsbry & Y. Hirase, 1905 represented as Vertigo kushiroensis Pilsbry & Y. Hirase, 1905
• Vertigo (Isthmia) kushiroensis botanicorum Horsák & Pokryszko, 2010 represented as Vertigo kushiroensis botanicorum Horsák & Pokryszko, 2010
• Vertigo (Isthmia) kushiroensis coreana Pilsbry, 1919 represented as Vertigo kushiroensis coreana Pilsbry, 1919
• Vertigo (Isthmia) kushiroensis hachijoensis Pilsbry, 1919 represented as Vertigo kushiroensis hachijoensis Pilsbry, 1919
• Vertigo (Isthmia) kushiroensis kushiroensis Pilsbry & Y. Hirase, 1905 represented as Vertigo kushiroensis kushiroensis Pilsbry & Y. Hirase, 1905
• Vertigo (Isthmia) microsphaera Schileyko, 1984 accepted as Vertigo microsphaera Schileyko, 1984
• Vertigo (Isthmia) monodonta Pollonera, 1885 (uncertain > unassessed)
• Vertigo (Isthmia) moulinsiana (Dupuy, 1849) represented as Vertigo moulinsiana (Dupuy, 1849)
• Vertigo (Isthmia) okinoerabuensis Pilsbry & Hirase, 1904 represented as Vertigo okinoerabuensis Pilsbry & Hirase, 1904
• Vertigo (Isthmia) pygmaea (Draparnaud, 1801) represented as Vertigo pygmaea (Draparnaud, 1801)
• Vertigo (Isthmia) tridentata Wolf, 1870 represented as Vertigo tridentata Wolf, 1870
• Vertigo (Isthmia) villafranchiana Sacco, 1887 † accepted as Negulopsis villafranchiana (Sacco, 1887) †