Lithoglyphus naticoides berolinensis C.A. Westerlund, 1886 Germany, Berlin
Fluminicola neritoides R. Hershler & al., 2007 California, Lassen County
Lithoglyphus neumayri (FOSSIL) Sinzov, 1876 †
Fluminicola nevadensis B. Walker, 1916
Lithoglyphus novaki (FOSSIL) Š. Brusina, 1897 †
Fluminicola nuttalliana (I. Lea, 1838) Oregon
Lithoglyphus obliquus (FOSSIL) Cobalcescu, 1883 †
Somatogyrus obtusus B. Walker, 1904 Alabama
Kobeltocochlea olchonensis W.A. Lindholm, 1909 Russia, Irkutsk
Potamolithus orbignyi H.A. Pilsbry, 1896 Uruguay
Lithoglyphus ornatus (FOSSIL) Papaianopol, 2006 †
Lithoglyphopsis ovata (R. Hershler, H.P. Liu& J.J. Landye, 2011) Mexico, Chihuahua
Potamolithus paranaensis H.A. Pilsbry, 1911 Brazil, Paraná5 mm
Somatogyrus parvulus G.W. Tryon, 1865 USA. Virginia
Potamolithus paysanduanus H.F.A. von Ihering, 1910 Uruguay5 mm
Somatogyrus pennsylvanicus B. Walker, 1904 Pennsylvania
Potamolithus peristomatus (A.V.M.D. D'Orbigny,1835) Brazil, Paraná
Potamolithus petitianus (A.V.M.D. D'Orbigny,1840) Uruguay
Potamolithus philippianus H.A. Pilsbry, 1911 Uruguay4,5 mm
Lithoglyphus phrygicus (FOSSIL) P. Oppenheim, 1919 † Turkey, Hierapolis
Somatogyrus pilsbryanus B. Walker, 1904 Alabama
Saduniella planispira R.A.M. Brandt, 1970
Manningiella polita (R.A.M. Brandt, 1970) Thailand4,2 mm
Fluminicola potemicus R. Hershler, H.P. Liu, T.J. Frest& E.J. Johannes, 2007 Oregon
Lithoglyphus prasinus (H.C. Küster, 1852) Austria
Pterides pterostoma H.A. Pilsbry, 1909 Mexico, San Luis Potosì
Benedictia pulchella T.Y. Sitnikova, 1987
Somatogyrus pumilus (T.A. Conrad, 1834) Alabama
Benedictia pumyla (W.A. Lindholm, 1924)
Lithoglyphus pygmaeus G.R. von Frauenfeld, 1863 Croatia
Somatogyrus pygmaeus B. Walker, 1909 Alabama
Lithoglyphus pyramidatus (FOSSIL) Möllendorf, 1873 †
Somatogyrus quadratus B. Walker, 1906 Alabama
Potamolithus quadratus H.A. Pilsbry& H.F.A. von Ihering, 1911 Uruguay
Lithoglyphus rarus (FOSSIL) Papaianopol, 2006 †