Xenopoma humboldtianum (L. Pfeiffer, 1867) Cuba
Tropidophora humbug R.J. Griffiths& D.G. Herbert, 2013 Madagascar
Colobostylus humphreysiana (L. Pfeiffer, 1846) Jamaica17 mm
Colonella hydii (C.D. Weinland) Bahamas
Pomatias hyrcanum (E.C. Von Martens, 1874) Azerbaijan
Xenopoma hystrix (B.H. Wright in L. Pfeiffer, 1862) Cuba16,5 mm
Chondropoma ignea (L.A. Reeve, 1838) Venezuela15 mm
Adamsiella ignilabris (C.B. Adams, 1849) Jamaica
Troschelvindex illustris F. Poey Cuba10,8 mm
Torrella immersa (J. Gundlach in L. Pfeiffer, 1857) Cuba
Torrella immersa camaronensis C. de la Torre& P. Bartsch, 1941 Cuba7,4 mm
Chondrothyretes impressa C. de la Torre& P. Bartsch, 1938 Cuba
Chondrothyretes impressa gigantea (C. de la Torre& P. Bartsch, 1938) Cuba28,2 mm
Chondrothyretes impressa rosariensis (C. de la Torre& P. Bartsch, 1938) Cuba17,8 mm
Annularisca incerta C. de la Torre& P. Bartsch, 1941 Cuba
Chondrothyretes incrassata (L. Pfeiffer, 1862) Cuba29 mm
Chondrothyretes incrassata aurantiaca (C. de la Torre& P. Bartsch, 1938) Cuba23 mm
Chondrothyretes incrassata subincrassata (C. de la Torre& P. Bartsch, 1938) Cuba
Troschelvindex inculta (F. Poey, 1851) Cuba14,8 mm
Pomatias indicum G.P. Deshayes, 1832 India, Pondicherry
Annularia indivisa (D.A. Welch, 1929) Cuba
Annularia inquisita (H.A. Pilsbry, 1929) Cuba
Opisthosiphon insulanum C. de la Torre& P. Bartsch, 1941 Cuba12 mm
Ligatella insularis (L. Pfeiffer, 1851) Seychelles
Annularisca intercisa C. de la Torre& P. Bartsch, 1941 Cuba
Colobostylus interruptus (J.B.P.A. Lamarck, 1822) Jamaica
Annularisca interstitialis (J. Gundlach in L. Pfeiffer, 1859) Cuba11 mm
Chondropoma irradians (R.J. Shuttleworth in L. Pfeiffer, 1852) Cuba15 mm
Adamsiella irrorata C.P. Gloyne, 1875 Jamaica
Rhytidopoma isabelae C.G. Aguayo & M.L. Jaume,1953 Cuba
Parachondria isabellina G.T. Watters, 2016
Tropidophora ivogoensis E. Fischer-Piette, Ch.P. Blanc& D. Vukadinovic, 1974 Madagascar
Rhytidopoma jacmelense P. Bartsch, 1946 Haiti
Rhytidothyra jacobsoni (L.O. Alcalde, 1948) Cuba
Annularia jamaguensis C. de la Torre Cuba