Assiminea namnetensis (FOSSIL) A.E.M. Cossmann, 1906 †
Acmella nana J.J. Vermeulen, T.S. Liew& M. Schilthuizen, 2015
Omphalotropis navigatorum (H. Strøm, 1765)
Omphalotropis nebulosa W.H. Pease, 1872
Omphalotropis nebulosa Delsaerdt, 2016
Suterilla neozelanica (R. Murdoch, 1899)
Assiminea nitida (W.H. Pease, 1864)
Assiminea nordjaponica T. Habe
Pseudocyclotus novaehiberniae (J.R.C. Quoy& J.P. Gaimard, 1832)
Ovassiminea obesa (FOSSIL) Pan, 1977 †
Atropis obesa A. Garrett, 1884
Cyclomorpha obligata (A.A. Gould, 1847)
Assiminea oblonga G. Mandahl-Barth, 1973
Omphalotropis oblonga (L. Pfeiffer, 1855)
Assiminea obtusa G.E.J. Wattebled, 1886
Assiminea occulta E. Rolán, 2013
Omphalotropis ochthogyra J.F. Quadras& O.F. von Möllendorff, 1894
Assiminea ovata (C.F.F. von Krauss, 1848)
Acmella ovoidea J.J. Vermeulen, T.S. Liew& M. Schilthuizen, 2015
Assiminea palauensis K.H.J. Thiele, 1927
Aviassiminea palitans H. Fukuda & W.F. Ponder,2003
Paludinassiminea paludinoides M. Yokoyama, 1927
Cyclotropis papuensis (C.M. Tapparone-Canefri,1883)
Assiminea parasitologica (J.T. Kuroda, 1958)
Garrettia parva W.H. Pease
Omphalotropis parva A. Mousson, 1865
Acmella parvula (P.M.A. Morelet, 1877)
Assiminea pecos J.D. Taylor, 1987
Omphalotropis perforata A. Mousson, 1865
Taiwanassiminea phantasma A. Hallan & H. Fukuda,2015
Assiminea philippinea O. Böttger, 1893
Metassiminea philippinica (O. Böttger, 1887)
Omphalotropis picta J.F. Quadras& O.F. von Möllendorff, 1894
Omphalotropis picturata (C.B. Adams, 1867)
Ponapella pihapiha W.J. Clench, 1946