Herilla illyrica diabasis (A.J. Wagner, 1919) Albania25,9 mm
Herilla illyrica savnikensis H. Nordsieck, 1971 Montenegro25,7 mm
Lampedusa imitatrix (O. Böttger, 1879) Malta15 mm
Synprosphyma imperatrix (O. Böttger& P.B. Schmacker, 1894) China, Sichuan province, Danba41 mm
Distortiphaedusa imprimata J. Grego & M. Szekeres,2011 China, Guangxi province22,2 mm
Cochlodina inaequalis (A. Schmidt, 1868) Croatia19,1 mm
Clausilia inanis A.R.J.B. Bavay& P. Dautzenberg, 1909 Vietnam, Pac-Kha15,1 mm
Albinaria inauris (O. Böttger, 1896) Turkey, Antalya13 mm
Albinaria inauris ietswaarti E. Gittenberger& H.P.M.G. Menkhorst, 1992 Turkey, Antalya17 mm
Albinaria inauris syedra H. Nordsieck, 2004 Turkey19 mm
Parabalea incarum H.A. Pilsbry, 1926 Peru, Junin12 mm
Parabalea incarum breurei (F.E. Loosjes& F.E. Loosjes, 1984) Peru12 mm
Siciliaria incerta (H.C. Küster, 1861) Italy, Sicily Island
Albinaria inchoata (O. Böttger, 1889) Greece9 mm
Albinaria inchoata klemmi (H. Nordsieck, 1972) Greece, Rhodos20,6 mm
Albinaria inchoata paramythica H. Nordsieck, 1974 Greece, Thesprotia12 mm
Albinaria inchoata regina H. Nordsieck, 1972 Greece17 mm
Procochlodina incisa (H.C. Küster, 1875) Italy, Toscana16 mm
Luchuphaedusa inclyta (H.A. Pilsbry, 1908) Okinawa
Synprosphyma incrustata H. Nordsieck, 2016
Index index (A. Mousson, 1863) Caucasus
Paraformosana indurata (P.M. Heude, 1886)
Bathyptychia infantilis (P.V. Gredler, 1890)
Bulgarica iniucunda (R.A.M. Brandt, 1962) Macedonia
Bathyptychia inopinata (Hunyadi & Szekeres,2016)
Rillyopsis inopinata (FOSSIL) (F. Traub, 1938 †)
Graciliaria inserta (C. Porro, 1841) Romania
Oospira insignis (A.A. Gould, 1844) Myanmar
Micropontica interjecta (O.W. Von Rosen, 1914) Caucasus
Mesophaedusa interlamellaris (E.C. Von Martens, 1876) Japan, Kumamoto
Fusulus interruptus (C. Pfeiffer, 1828) Austria9,4 mm
Excussispira inversa (P.M. Heude, 1886) Turkey22,4 mm
Selenoptyx inversiluna H.A. Pilsbry, 1908 Okinawa
Cylindrophaedusa ioes (W.H. Benson, 1852)
Tyrannophaedusa iotaptyx (H.A. Pilsbry, 1900) Japan, Mie18 mm