Echinolittorina paytensis (R.A. Philippi, 1847)
Pellilitorina pellita (E.C. Von Martens, 1885)
Eulimene pendula (FOSSIL) Wood, 1872 †
Echinolittorina penicillata (P.P. Carpenter, 1864)
Echinolittorina peregrinator D.G. Reid, 2011
Echinolittorina peruviana (J.B.P.A. Lamarck, 1822)
Peasiella petiti (FOSSIL) Renard, 1994 †
Littorina petricola (FOSSIL) R. Arnold, 1908 †
Littoraria philippiana (L.A. Reeve, 1857)
Echinolittorina philippinensis D.G. Reid, 2007
Lacuna picta R.B. Watson, 1880
Littoraria pintado (W. Wood, 1828)
Littoraria pintado pullata (P.P. Carpenter, 1864)
Echinolittorina placida D.G. Reid, 2009
Littorina plena A.A. Gould, 1849
Echinolittorina porcata (R.A. Philippi, 1846)
Lacuna porrecta P.P. Carpenter, 1864
Afrolittorina praetermissa (W.L. May, 1909)
Bembicium priscum (FOSSIL) Powell & J.A. Bartrum,1929 †
Lacuna pulchella (FOSSIL) G.P. Deshayes, 1861 †
Echinolittorina pulchella (R.W. Dunker, 1845)
Lacuna pumilio E.A. Smith, 1890
Echinolittorina punctata (J.F. Gmelin, 1791)
Laevilitorina pygmaea G.J. Pfeffer in E.C. Von Martens& G.J. Pfeffer, 1886
Nodilittorina pyramidalis (J.R.C. Quoy, 1834)
Echinolittorina quadricincta (J.K. Megerle Von Mühlfeld,1824)
Echinolittorina radiata (L.F.A. Souleyet in J.F.T. Eydoux& L.F.A. Souleyet, 1852)
Lacuna reflexa (W.H. Dall, 1884)
Subditotectarius rehderi (FOSSIL) H.S. Ladd, 1966 †
Peasiella reidi (FOSSIL) M. Harzhauser, 2004 †
Littorina remondii (FOSSIL) W.M. Gabb, 1866 †
Echinolittorina reticulata (H.E. Anton, 1838)
Mainwaringia rhizophila D.G. Reid, 1986
Littoraria rissoides (FOSSIL) G.P. Deshayes, 1861 †
Peasiella roepstorffiana (G. Nevill, 1885)