Philonesia abeillei (C.M.F. Ancey, 1889) Hawaii
Luchuconulus acutus (H.A. Pilsbry& Y. Hirase, 1905) Japan, Kagoshima
Euconulus affinis H.A. Pilsbry & Y. Hirase Japan, Hokkaido
Microcystis albosuturalis K.C. Emberton, 2010 Madagascar, Andriantantely
Tengchiena albumenoidea (J.C. Cox, 1868) South Australia
Euconulus alderi (J.E. Gray, 1840) Vermont
Euconulus alveolus (FOSSIL) (Sandberger, 1887) †
Microcystis ambinanifae K.C. Emberton, 1994 Madagascar, Antalaha
Microcystis andriamahajai K.C. Emberton& T.A. Pearce, 2000
Liardetia angigyra (O.F. von Möllendorff,1897)
Habroconus angueinus (C.M.F. Ancey, 1892)
Coneuplecta angulifera H.A. Pilsbry & Y. Hirase,1905 Taiwan
Euconulus anijimanus H.A. Pilsbry & Y. Hirase,1905 Japan, Ogasawara Islands
Lamprocystis annamitica (O.F. von Möllendorff,1898) Vietnam, Nha Trang
Tengchiena antiqua (N.H. Odhner, 1917) Australia, Chillagoe
Lamprocystis appendiculata (O.F. von Möllendorff,1893)
Tengchiena ardeni (T. Iredale, 1937) Hawaii
Philonesia arenofunus H.B. Baker, 1940 Hawaii
Coneuplecta arimensis T. Habe, 1948 Japan
Philonesia ascendens H.B. Baker, 1940 Hawaii
Palaua babelthuapi Unknown Palau
Philonesia baldwini (C.M.F. Ancey, 1889) Hawaii
Coneuplecta baritensis (E.A. Smith, 1894)
Microcystis basispiralis H.B. Preston, 1913 Norfolk Island
Microcystis belli H.B. Preston, 1913 Norfolk Island
Guppya biolleyi E.C. Von Martens, 1892 Mexico, Puebla
Microcystis blanci K.C. Emberton& T.A. Pearce, 2000
Liardetia boninensis (H.A. Pilsbry& Y. Hirase, 1908) Japan, Ogasawara Islands
Microcystis borneensis (L. Pfeiffer, 1849) Malaysia, Borneo
Pseudoguppya browni (H.A. Pilsbry, 1910) Panama
Lamprocystis calamianica J.F. Quadras& O.F. von Möllendorff, 1894
Discoconulus calcicola J.T. Kuroda, 1954 Japan
Coneuplecta calculosa (A.A. Gould, 1852) Malaysia, Borneo
Euconulus callopisticus (J.R. Bourguignat, 1890) France, Haute Provence
Greenwoodoconcha caloraphe H.B. Preston, 1913 Norfolk Island