Napaeus inflatiusculus (T.V. Wollaston, 1878)
Napaeus interpunctatus (T.V. Wollaston, 1878)
Chondrulopsina intumescens (E.C. Von Martens, 1874)
Asuranena inversa A.A. Schileyko& S.E. Moiseeva, 1995
Merdigera invisa P.V. Kijashko, 2006
Napaeus isletae K. Groh & C.M. Ibáñez,1992
Geminula isseliana (J.R. Bourguignatin A. Issel, 1865)
Mastus itanosensis W.J.M. Maassen, 1995
Pseudonapaeus izzatullaevi A.G. Kuznetsov, 1999
Mirus japonicus (O.F. von Möllendorff,1885)
Mirus japonicus daisianus J.T. Kuroda, 1945
Mirus japonicus ugoensis H.A. Pilsbry & Y. Hirase,1908
Napaeus josei J. Santana, M.R. Alonso& C.M. Ibáñez, 2011
Kabylia kabylianus (A. Letourneux, 1870)
Pseudonapaeus kasnakowi C.A. Westerlund, 1898
Turanena katerinae E. Gittenberger, 1996
Subzebrinus kayberensis (C.M.F. Ancey, 1893)
Zebrina kindermanni L. Pfeiffer, 1850
Brephulopsis konovalovae N. Gural-Sverlova& R.I. Gural, 2010
Pene kotschyi (L. Pfeiffer, 1854)
Pseudonapaeus kuldshanus (E.C. Von Martens, 1882)
Subzebrinus labiellus (E.C. Von Martens, 1881)
Buliminus labrosus (G.A. Olivier, 1804)
Buliminus labrosus spirectinus (J.R. Bourguignat, 1879)
Ramusculus laevitortus H. Schütt, 1995
Napaeus lajaensis R. Garcia del Castillo, Y. Yanes, M.R. Alonso& C.M. Ibáñez, 2006
Euchondrus lamellifera (E.A. Rossmässler, 1858)
Buliminus lamprostatus J.R. Bourguignat
Peristoma lanceum A.A. Schileyko, 1984
Jaminia ledereri L. Pfeiffer, 1868
Pseudochondrula lederi (O. Böttger, 1883)
Laevozebrinus lenis A.A. Schileyko, 1984
Asuranena leptogyra (W.A. Lindholm, 1927)
Boninena leptostraca (P.B. Schmacker& O. Böttger, 1891)
Coniconapaeus letourneuxi (J.R. Bourguignat, 1864)