Achatinella abbreviata L.A. Reeve, 1850
Achatinella abbreviata bacca L.A. Reeve, 1850
Tornatellaria abbreviata (C.M.F. Ancey, 1903)
Strobilus acicularis C.M. Cooke & Y. Kondo,1960
Strobilus acicularis raphi C.M. Cooke & Y. Kondo,1960
Pukunia acuta C.M. Cooke & Y. Kondo,1960
Atea adamsoni H.A. Pilsbry & C.M. Cooke,1933
Tornatellaria adelinae H.A. Pilsbry & C.M. Cooke,1915
Achatinella adusta L.A. Reeve, 1850
Tubuaia affinis (A. Garrett, 1879)
Gulickia alexandri C.M. Cooke, 1915
Pitys alpestris C.M. Cooke & Y. Kondo,1960
Auriculella ambusta W.H. Pease, 1868
Auriculella amoena L. Pfeiffer, 1855
Nesonoica anatonuensis C.M. Cooke & Y. Kondo,1960
Partulina anceyana D.D. Baldwin, 1895
Tornatellaria anceyana C.M. Cooke & H.A. Pilsbry,1916
Elasmias anceyanum H.A. Pilsbry & C.M. Cooke,1915
Apopitys andersoni C.M. Cooke & Y. Kondo,1960
Tornatellina aperta N.H. Odhner, 1921
Elasmias apertum (W.H. Pease, 1864)
Achatinella apexfulva (G. Dixon, 1789)
Achatinella apexfulva aloha H.A. Pilsbry & C.M. Cooke,1914
Achatinella apexfulva apicata L. Pfeiffer, 1855
Achatinella apexfulva beata H.A. Pilsbry & C.M. Cooke,1914
Achatinella apexfulva cestus W. Newcomb, 1854
Achatinella apexfulva glaucopicta D.A. Welch, 1942
Achatinella apexfulva leucorrhaphe J.T. Gulick, 1873
Achatinella apexfulva paumaluensis D.A. Welch, 1942
Partulina aptycha L. Pfeiffer, 1855
Taitaa arauana C.M. Cooke & Y. Kondo,1960
Meryticola arborea C.M. Cooke & Y. Kondo,1960
Meryticola arborea sororcula C.M. Cooke & Y. Kondo,1960
Auriculella armata (J.W. Mighels, 1845)
Partulina arnemanni C.M. Cooke & Y. Kondo,1952