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