Xeroleuca abadi J. Ahuir Galindo, 2014 Morocco, cap Cantin19,22 mm
Xerosecta abarriana P.M. Pallary, 1923 Morocco, cap Cantin7 mm
Caucasigena abchasica W.A. Lindholm, 1927 Russia, Georgia19,5 mm
Helicella aberrans (A. Mousson, 1863) Greece, Patras
Caseolus abjectus (R.T. Lowe, 1851) Portugal, Madeira6,8 mm
Geomitra acarinata J. Hemmen & K. Groh, 1985
Actinella actinophora (R.T. Lowe, 1831) Portugal, Madeira
Actinella actinophora descendens (T.V. Wollaston, 1878) Canary Islands12 mm
Monachoides aculeatus (K.K. Uvalieva, 1964) Russia, Tuva
Xerosecta aderoualensis P.M. Pallary, 1923 Morocco, cap Cantin8 mm
Xeromagna adolfi (L. Pfeiffer, 1854) ES-SPA
Helicella adolphi (L. Pfeiffer, 1854) Morocco, cap Cantin21,1 mm
Xerotricha adoptata (A. Mousson, 1872) Canary Islands
Leptaxis advena (P.B. Webb& S. Berthelot, 1833) Cape Verde21 mm
Helicopsis aelleni B. Hausdorf, 1996 North Iran
Cernuella aginnica (É.A.A. Locard, 1882) Italy, Liguria
Xerosecta ahmei (P.M. Pallary, 1898) Morocco, cap Cantin11 mm
Xeropicta akrotirica E. Gittenberger, 1991 Cyprus
Xerocrassa albarracinensis G. Faci, 1991
Xerosecta albezini (P.M. Pallary, 1933) Morocco, cap Cantin14 mm
Xerosecta albezini elevata (P.M. Pallary, 1933) Morocco, cap Cantin14 mm
Monacha albocincta (P. Hesse, 1912) Syria
Angiomphalia almalensis A.A. Schileyko& K.K. Uvalieva, 1978
Trichia alpicola (L. Eder, 1921) Switzerland
Lindholmomneme altaica (C.A. Westerlund, 1896) Russia, Altai Mountains
Xeromunda alticola B. Hausdorf, 1995 Greece, Peloponnesus
Suboestophora altimirai (A. Ortiz De Zárate,1962) Spain, Castellon
Cernuella amanda E.A. Rossmässler, 1838 Italy, Trapani
Xerosecta amelilensis (P.M. Pallary, 1918) Morocco, cap Cantin18 mm
Xerocrassa amphiconus (H. von Maltzan, 1883) Greece, Crete Island
Metafruticicola andria (E.C. Von Martens, 1889) Greece, Mikonos
Leucozonella angulata (C.A. Westerlund, 1896) Uzbekistan14 mm
Monacha aniliensis P.L. Reischütz& H.A. Sattmann, 1990 Aegine, Attiki, Greece
Xeroleuca antoinei P.M. Pallary, 1936 Morocco, cap Cantin10,61 mm
Nienhuisiella antonellae F.L. Giusti& G. Manganelli, 1987 Italy, Sardinia Island