Pseudotaranis hyperia (W.H. Dall, 1919)
Crassispira hypermeces (FOSSIL) A.E.M. Cossmann, 1889 † France, Paris Basin
Hindsiclava ignorata D. Frassinetti& Covacevich, 1995
Comitas ilariae L. Bozzetti, 1991 Philippines, Bohol85,1 mm
Comitas imperfecta (FOSSIL) L. C. King, 1933 †
Crassispira incrassata (G.B. I Sowerby, 1834) Panama West46 mm
Inquisitor indistinctus A.V. Sysoev, 1996
Inquisitor insignita (J.C. Melvill, 1923) Malaysia26 mm
Crassispira integra (K.H.J. Thiele, 1925)
Inquisitor interrupta (J.B.P.A. Lamarck, 1816) Japan
Inquisitor intertincta (E.A. Smith, 1877) Philippines, Aliguay Island25 mm
Crassispira iravadica (FOSSIL) E.W. Vredenburg, 1921 † Myanmar, Magway, Thayetmyo
Inquisitor isabella R.N. Kilburn, 1988 Mozambique18 mm
Antiplanes isaotakii (T. Habe, 1958) Japan, Hokkaido26,9 mm
Inquisitor ischnos (FOSSIL) (R.A. Philippi, 1887 †) Chile, Navidad Formation30,5 mm
Leucosyrinx iwaensis (FOSSIL) F.S. MacNeil, 1960 † Okinawa25 mm
Compsodrillia jaculum (H.A. Pilsbry& H.N. Lowe, 1932) Costa Rica55 mm
Epideira jaffaensis (J.C. Verco, 1909) South Australia
Crassispira jamaicensis (FOSSIL) R.J.L. Guppy, 1866 †
Pilsbryspira jayana (C.B. Adams, 1850) Honduras11 mm
Inquisitor jeffreysii (E.A. Smith, 1875) Taiwan61,6 mm
Lioglyphostoma jousseaumei (P. Dautzenberg, 1900) Panama East12 mm
Leucosyrinx julia K.H.J. Thiele, 1925 Indo-Pacific
Hindsiclava jungi O. Macsotay & B. Campos,2001 South Australia43 mm
Crassispira kachhensis (FOSSIL) E.W. Vredenburg, 1925 † India, Gujarat, Kachchh
Comitas kaderlyi (C.E. Lischke, 1872) Philippines, Aliguay Island87 mm
Otitoma kagoshimaensis (FOSSIL) (T. Shuto, 1965 †)
Comitas kaipara (FOSSIL) C.R. Laws, 1939 † New Zealand
Crassispira kamaensis (FOSSIL) E.W. Vredenburg, 1921 † Myanmar, Magway, Thayetmyo
Comitas kamakurana (H.A. Pilsbry, 1895) Philippines, Masbate Island81,6 mm
Pilsbryspira kandai (J.T. Kuroda, 1950) Japan
Leucosyrinx kantori J.H. McLean, 1995
Inquisitor kawamurai (T. Habe & S. Kosuge,1966) Vietnam, Nha Trang57 mm
Comitas kayalensis A. Dey, 1962 India, Cuddalore
Thelecytharella kecil (A.V. Sysoev, 1997) Indonesia, Kai Island5,4 mm