Cerion abacoensis H.A. Pilsbry& E.G. Vanatta, 1895 Bahamas
Strophiops abbotti W.J. Clench, 1961 Bahamas
Strophiops acceptoria C.J. Maynard, 1913 Bahamas
Strophiops accuminator C.J. Maynard& W.F. Clapp, 1920 Bahamas, Eleuthera
Protocerion acherontis (FOSSIL) (B. Roth & O. Hartman,1998 †) USA, Montana
Strophiops acuta (C.J. Maynard, 1889) Cayman Islands
Cerion acuticostatum M.I. Sánchez Roig, 1948 Cuba
Strophiops adumbra C.J. Maynard& W.F. Clapp, 1920 Bahamas
Cerion aedilii C.G. Aguayo& C. de la Torre, 1951 Cuba
Cerion agassizii W.H. Dall, 1894 Bahamas
Cerion agrestina C.J. Maynard, 1894 Bahamas17 mm
Strophiops agricola C.J. Maynard, 1919 Bahamas
Cerion aguayoi C. de la Torre& W.J. Clench, 1957 Cuba
Cerion aguayoi bequaerti C. de la Torre& W.J. Clench, 1932 Cuba
Strophiops ajax C.J. Maynard, 1924 Bahamas
Strophiops albata C.J. Maynard& W.F. Clapp, 1921 Bahamas
Cerion alberti W.J. Clench& C.G. Aguayo, 1949 Cuba24 mm
Cerion albicostata (C.J. Maynard, 1894) Bahamas28 mm
Strophiops albolabra W.J. Clench, 1952 Bahamas
Cerion alcaldei C.G. Aguayo& M.I. Sánchez Roig, 1953 Cuba
Cerion alleni C. de la Torre in H.A. Pilsbry, 1929 Cuba
Cerion alvearia L.W. Dillwyn, 1817 Bahamas
Strophiops angustocostata C.J. Maynard& W.F. Clapp, 1921 Bahamas
Cerion arangoi (H.A. Pilsbry& E.G. Vanatta, 1896) Cuba19 mm
Brasilennea arethusae (FOSSIL) C.J. Maury, 1935 †
Strophiops argentia C.J. Maynard, 1913 Bahamas
Strophiops armouri W.J. Clench, 1933 Bahamas
Cerion arubanum H.B. Baker, 1924 Aruba17 mm
Cerion asperum (C.J. Maynard& W.F. Clapp, 1920) Bahamas16 mm
Strophiops avita C.J. Maynard, 1913 Bahamas
Cerion baconi P. Bartsch, 1952 Caribbean
Cerion banesense W.J. Clench& C.G. Aguayo, 1949 Cuba21 mm
Strophiops barbouri W.J. Clench, 1933 Caribbean
Cerion bariayi C.G. Aguayo & M.L. Jaume,1957 Cuba
Cerion barroi C.G. Aguayo & M.L. Jaume,1957 Caribbean