Calyptraea sakaguchi J.T. Kuroda & T. Habe,1961
Maoricrypta salebrosa (FOSSIL) J. Marwick, 1929 †
Calyptraea sallomacensis (FOSSIL) A.E.M. Cossmann& M.A. Peyrot, 1921 †
Turbocalyptraea scabrosa (FOSSIL) F.E. Eames, 1957 †
Crucibulum scutellatum Wood, 1828
Crucibulum serratum (W.J. Broderip, 1834)
Maoricrypta sodalis B.A. Marshall, 2003
Calyptraea sorachiensis (FOSSIL) K. Oyama & A. Mizuno,1958 †
Sigapatella spadicea D.P. Boshier, 1961
Calyptraea spinifera (J.E. Gray, 1867)
Crucibulum spinosum (G.B. I Sowerby, 1824)
Calyptraea spirala (E. Forbes, 1852)
Crucibulum springvaleense R.F. Rutsch, 1942
Calyptraea striatella (FOSSIL) P. Nyst, 1845 †
Crucibulum striatum (T. Say, 1826)
Crepidula striolata K.T. Menke, 1851
Crucibulum subactum S.S. Berry, 1963
Siphopatella subcentralis (FOSSIL) A.E.M. Cossmann, 1910 †
Calyptraea subreflexa (P.P. Carpenter, 1856)
Crucibulum subsutum (FOSSIL) R.J.L. Guppy, 1867 †
Calyptraea subtabulata (FOSSIL) R. Tate, 1893 †
Sigapatella subvaricosa (FOSSIL) Powell & J.A. Bartrum,1929 †
Sigapatella superstes C.A. Fleming, 1958
Bostrycapulus tegulicius (A. de Rochebrune, 1883)
Sigapatella tenuis (J.E. Gray, 1867)
Sigapatella terraenovae (FOSSIL) A.J. Peile, 1924 †
Calyptraea tokunagai (FOSSIL) K.M. Hatai & S. Nisiyama,1960 †
Calyptraea trochiformis (FOSSIL) J.B.P.A. Lamarck, 1804 †
Trochita trochiformis (I. von Born, 1778)
Calyptraea tudung (FOSSIL) K. Martin, 1905 †
Calyptropsis turbinata (FOSSIL) J.E. Tenison-Woods,1879 †
Crepidula umbilicata (FOSSIL) (Johnston, 1885 †)
Crucibulum umbrella (G.P. Deshayes, 1830)
Calyptraea undulata (FOSSIL) R. Tate, 1893 †
Crepidula ungana (FOSSIL) W.H. Dall, 1908 †