Cerion iostomum moreleti W.J. Clench& C.G. Aguayo, 1951 Cuba30 mm
Cerion johnsoni H.A. Pilsbry& E.G. Vanatta, 1895 Cuba
Cerion josephi W.J. Clench& C.G. Aguayo, 1949 Cuba
Strophiops josephinae W.J. Clench, 1935 Bahamas
Strophiops juliae W.J. Clench, 1936 Bahamas
Cerion klineae W.J. Clench, 1961 Bahamas
Cerion kusteri (L. Pfeiffer, 1854) Cuba16,2 mm
Strophiops larga C.J. Maynard, 1913 Bahamas
Cerion latisinus H.A. Pilsbry & H. Black,1930 Bahamas
Cerion laureani W.J. Clench& C.G. Aguayo, 1951 Cuba37,3 mm
Cerion lenticularia C.J. Maynard& W.F. Clapp, 1921 Bahamas
Strophiops lentiginosa (C.J. Maynard, 1889) Bahamas
Strophiops leucophera C.J. Maynard, 1925 Bahamas
Strophiops leva C.J. Maynard& W.F. Clapp, 1921 Bahamas
Strophiops levigata (C.J. Maynard, 1889) Caymans
Cerion lewisi W.J. Clench, 1961 Turks & Caicos35 mm
Cerion liliorum W.J. Clench, 1938 Bahamas
Strophiops lineota (C.J. Maynard, 1889) Bahamas
Strophiops livida C.J. Maynard, 1924 Bahamas
Cerion longidens H.A. Pilsbry, 1902 Cuba
Cerion longissimus (J.F. Gmelin, 1791)
Strophiops lucayanorum W.J. Clench, 1938 Caribbean
Cerion macrodon C.G. Aguayo & M.L. Jaume,1951 Cuba
Cerion madama M.I. Sánchez Roig, 1951 Caribbean
Cerion maisianum H.A. Pilsbry, 1902 Cuba
Cerion major H.H. Beck, 1837 Caribbean
Strophiops malonei W.J. Clench, 1952 Bahamas
Cerion manatiense C.G. Aguayo & M.L. Jaume,1951 Cuba
Strophiops mariae C.J. Maynard& W.F. Clapp, 1920 Bahamas
Cerion marielinum H.A. Pilsbry, 1927 Cuba
Cerion marielinum dominicanum W.J. Clench& C.G. Aguayo, 1951 Cuba
Strophiops mariguanense W.J. Clench, 1933 Caribbean
Cerion maritimum (L. Pfeiffer, 1839) Cuba30,9 mm
Cerion maritimum sublaevigatum L. Pfeiffer in H.A. Pilsbry& E.G. Vanatta, 1895 Cuba29,6 mm
Cerion marmoratum L. Pfeiffer, 1847 Bahamas