Heudeia josefinae A.J. Wagner, 1905
Priotrochatella josephinae (C.B. Adams, 1849) Cuba
Geotrochatella jourdyi P. Dautzenberg, 1895 Vietnam
Orobophana juddii H.A. Pilsbry& C.M. Cooke, 1908 Hawaii
Troschelviana jugulata (F. Poey, 1858) Cuba12 mm
Helicina juliae W.J. Clench, 1962
Helicina juruana H.F.A. von Ihering, 1905 Brazil10,2 mm
Pleuropoma kauaiensis H.A. Pilsbry& C.M. Cooke, 1908 Hawaii
Trichohelicina klappenbachi W.K. Weyrauch, 1966 Argentina, Misiones
Lucidella kobelti A.J. Wagner, 1910 Jamaica
Helicina lacerata H.B. Preston, 1914
Pleuropoma laciniosa (J.W. Mighels, 1845) Hawaii
Pleuropoma laciniosa pusilla M.C. Neal, 1934 Hawaii
Blandia laidlawiana E. Chitty, 1857 Jamaica
Poeniella lasdlensis W.J. Clench& C.G. Aguayo, 1937
Helicina laterculus F.C. Baker, 1914 Brazil, Pará5 mm
Helicina laus A.J. Wagner, 1905
Fadyenia layardiana E. Chitty, 1857 Jamaica
Fadyenia leana (C.B. Adams, 1849) Jamaica
Helicina lembeyana F. Poey, 1854 Cuba
Helicina leopoldinae A.J. Wagner, 1906 Brazil11 mm
Helicina leptrotopis A.J. Wagner, 1910 Brazil
Helicina leucozonalis C.M.F. Ancey, 1892 Brazil9 mm
Alcadia lewisi H.A. Pilsbry, 1942 Caymans
Fadyenia lindsleyana (C.B. Adams, 1849) Jamaica
Lucidella lineata T. Kira, 1955 Jamaica5 mm
Poenia lirata (L. Pfeiffer, 1847) Mexico, Yucatan
Helicina lirifera C.M.F. Ancey, 1892 Brazil
Calidviana littoricola (J. Gundlach in L. Pfeiffer, 1860) Cuba
Stoastoma livesayanum E. Chitty, 1857 Jamaica
Fadyenia loweana E. Chitty, 1857 Jamaica
Fadyenia lukisiana E. Chitty, 1857 Jamaica
Helicina lundi H.H. Beck, 1858 Brazil, Bahia5 mm
Fadyenia macandrewiana (E. Chitty, 1857) Jamaica
Fadyenia macgillivrayana E. Chitty, 1857 Jamaica