Rhinoclavis otukai (S. Nomura, 1935)
Cerithium pacificum R.S. Houbrick, 1992
Lirobittium paganicum (W.H. Dall, 1919)
Hemicerithium pagodum (FOSSIL) R.C. Hoerle, 1972 †
Bittium paleonotum (FOSSIL) J.D. Stilwell & al.,2004 †
Bittium panamense P. Bartsch, 1911
Occidentocerithium panthalassicum (FOSSIL) A. Nützel & al., 2003 †
Bittium parcecostatum (FOSSIL) A. Watelet, 1851 †
Ittibittium parcum (A.A. Gould, 1861)
Cerithium paronai (FOSSIL) Schnarrenberger, 1899 †
Gourmya parungpontengense (FOSSIL) Martin, 1905 †
Bittium parvulum (FOSSIL) S. Nardini, 1934 †
Cestumcerithium pascoensis (FOSSIL) (W.C. Mansfield, 1937 †)
Bittium pauperculum (C.B. Adams, 1852)
Varicopeza pauxilla (A. Adams, 1855)
Cerithium pecosense (FOSSIL) Stanton, 1947 †
Clypeomorus pellucida (J.B. Hombron& C.H. Jacquinot, 1852)
Cerithium pentacostae (FOSSIL) C. Moore, 1867 †
Thericium peregrinum (FOSSIL) R.C. Hoerle, 1972 †
Cerithium pergradatum (FOSSIL) W.H. Hudleston, 1889 †
Ptychocerithium perlamellosum (FOSSIL) E.W. Vredenburg, 1928 †
Tenuicerithium permutabile (FOSSIL) (W.H. Dall, 1892 †)
Pseudovertagus peroni B.R. Wilson, 1975
Cerithidium perparvulum (R.B. Watson, 1886)
Cerithium perpulchrum (FOSSIL) Wood, 1848 †
Clypeomorus persica R.S. Houbrick, 1985
Bittium peruvianum (A.V.M.D. D'Orbigny,1841)
Bittium pervicinum (FOSSIL) A.E.M. Cossmann & G. Pissarro †,
Cerithium petitclerci (FOSSIL) A.E.M. Cossmann, 1882 †
Clypeomorus petrosa (W. Wood, 1828)
Clypeomorus petrosa chemnitziana (H.A. Pilsbry, 1901)
Clypeomorus petrosa isselii (A. Pagenstecher, 1877)
Cerithium peyroti (FOSSIL) (G.F. Dollfus, 1909 †)
Cerithium pfefferi R.W. Dunker, 1882
Bittium philippardi (FOSSIL) (E.M. Da Costa, 1778 †)