Retinella olivetorum (J.F. Gmelin, 1791)
Retinella opinata S. Clessin, 1887
Spelaeopatula orientalis I. Dedov & P. Subai, 2012
Cellariopsis orientalis (S. Clessin, 1877)
Schistophallus oscari (M. Kimakowicz, 1883)
Zonites osmanicus F. Riedel, 1987
Lyrodiscus osoriensis (T.V. Wollaston, 1878)
Gyralina pageti E. Gittenberger, 1988
Omphalina paradensis (L. Pfeiffer, 1860)
Zonites parnonensis F. Riedel, 1985
Doraegopis parnonicus F. Riedel, 1982
Nesovitrea pauxilla (A.A. Gould, 1852)
Glyphyalinia pecki L.R. Hubricht, 1966
Glyphyalinia pentadelphia H.A. Pilsbry, 1900
Mesomphix perfragilis A. Wetherby, 1894
Zonites pergranulatus W. Kobelt, 1878
Mesomphix perlaevis H.A. Pilsbry, 1900
Hyalinia permodesta E.C. Von Martens, 1892
Perpolita petronella (L. Pfeiffer, 1853)
Paravitrea petrophila (T.B. Bland, 1883)
Glyphyalinia picea L.R. Hubricht, 1976
Paravitrea pilsbryana W.F. Clapp, 1919
Mesomphix pilsbryi W.F. Clapp, 1904
Zonites piratarum F. Riedel, 1987
Omphalina pittieri (P. Bartsch, 1909)
Paravitrea placentula (R.J. Shuttleworth, 1852)
Paravitrea pontis H.B. Baker, 1931
Glyphyalinia praecox H.B. Baker, 1930
Aegopinella procellaria (FOSSIL) (Jooss, 1918) †
Retinella pseudoaegopinella F.L. Giusti, A. Boato& M. Bodon, 1986
Aegopinella pura (J. Alder, 1830)
Pilsbryna quadrilamellata J. Slapcinsky & J. Coles,2003
Glyphyalus quillensis De Winter, van Leeuwen& Hovestadt, 2016
Glyphyalinia raderi W.H. Dall, 1898
Retinella radiatella O.W.H. Reinhardt, 1877