Pseudotaranis hyperia (W.H. Dall, 1919)
Crassispira hypermeces (FOSSIL) A.E.M. Cossmann, 1889 †
Hindsiclava ignorata D. Frassinetti & Covacevich,1995
Comitas ilariae L. Bozzetti, 1991
Comitas imperfecta (FOSSIL) L. C. King, 1933 †
Crassispira incrassata (G.B. I Sowerby, 1834)
Inquisitor indistinctus A.V. Sysoev, 1996
Inquisitor insignita (J.C. Melvill, 1923)
Crassispira integra (K.H.J. Thiele, 1925)
Inquisitor interrupta (J.B.P.A. Lamarck, 1816)
Inquisitor intertincta (E.A. Smith, 1877)
Crassispira iravadica (FOSSIL) E.W. Vredenburg, 1921 †
Inquisitor isabella R.N. Kilburn, 1988
Antiplanes isaotakii (T. Habe, 1958)
Inquisitor ischnos (FOSSIL) (R.A. Philippi, 1887 †)
Leucosyrinx iwaensis (FOSSIL) F.S. MacNeil, 1960 †
Compsodrillia jaculum (H.A. Pilsbry & H.N. Lowe,1932)
Epideira jaffaensis (J.C. Verco, 1909)
Crassispira jamaicensis (FOSSIL) R.J.L. Guppy, 1866 †
Pilsbryspira jayana (C.B. Adams, 1850)
Inquisitor jeffreysii (E.A. Smith, 1875)
Lioglyphostoma jousseaumei (P. Dautzenberg, 1900)
Leucosyrinx julia K.H.J. Thiele, 1925
Hindsiclava jungi O. Macsotay & B. Campos,2001
Crassispira kachhensis (FOSSIL) E.W. Vredenburg, 1925 †
Comitas kaderlyi (C.E. Lischke, 1872)
Otitoma kagoshimaensis (FOSSIL) (T. Shuto, 1965 †)
Comitas kaipara (FOSSIL) C.R. Laws, 1939 †
Crassispira kamaensis (FOSSIL) E.W. Vredenburg, 1921 †
Comitas kamakurana (H.A. Pilsbry, 1895)
Pilsbryspira kandai (J.T. Kuroda, 1950)
Leucosyrinx kantori J.H. McLean, 1995
Inquisitor kawamurai (T. Habe & S. Kosuge,1966)
Comitas kayalensis A. Dey, 1962
Thelecytharella kecil (A.V. Sysoev, 1997)