 Acanthinula aculeata VALLONIIDAE |
 Acicula beneckei ACICULIDAE |
 Acicula benoiti ACICULIDAE |
 Acicula disjuncta ACICULIDAE |
 Acicula lineata ACICULIDAE |
 Acicula lineata sublineata ACICULIDAE |
 Acicula lineolata banki ACICULIDAE |
 Acicula lineolata lineolata ACICULIDAE |
 Acicula szigethyannae ACICULIDAE |
 Acicula vezzanii ACICULIDAE |
 Acroloxus lacustris ACROLOXIDAE |
 Acroloxus tetensi ACROLOXIDAE |
 Aegopinella cisalpina ZONITIDAE |
 Aegopinella forcarti ZONITIDAE |
 Aegopinella graziadeii ZONITIDAE |
 Aegopinella minor ZONITIDAE |
 Aegopinella nitens ZONITIDAE |
 Aegopinella pura ZONITIDAE |
 Aegopinella ressmanni ZONITIDAE |
 Aegopis gemonensis ZONITIDAE |
 Aegopis italicus ZONITIDAE |
 Aegopis verticillus ZONITIDAE |
 Agardhiella truncatella truncatella PUPILLIDAE |
 Alzoniella bergomensis HYDROBIIDAE |
 Alzoniella braccoensis HYDROBIIDAE |
 Alzoniella cornucopia HYDROBIIDAE |
 Alzoniella delmastroi HYDROBIIDAE |
 Alzoniella fabrianensis HYDROBIIDAE |
 Alzoniella feneriensis HYDROBIIDAE |
 Alzoniella finalina HYDROBIIDAE |
 Alzoniella lunensis HYDROBIIDAE |
 Alzoniella macrostoma HYDROBIIDAE |
 Alzoniella manganellii HYDROBIIDAE |
 Alzoniella microstoma HYDROBIIDAE |
 Alzoniella sigestra HYDROBIIDAE |
 Ancylus fluviatilis ANCYLIDAE |
 Anisus leucostoma PLANORBIDAE |
 Anisus spirorbis PLANORBIDAE |
 Anisus vortex PLANORBIDAE |
 Anisus vorticulus PLANORBIDAE |
 Anodonta anatina UNIONIDAE |
 Anodonta cygnea UNIONIDAE |
 Aplexa hypnorum PHYSIDAE |
 Arganiella pescei HYDROBIIDAE |
 Argna biplicata biplicata PUPILLIDAE |
 Argna biplicata excessiva PUPILLIDAE |
 Argna bourguignatiana PUPILLIDAE |
 Argna ferrarii blanci PUPILLIDAE |
 Argna ferrarii ferrarii PUPILLIDAE |
 Argna ligustica PUPILLIDAE |
 Argna valsabina PUPILLIDAE |
 Arianta arbustorum arbustorum HELICIDAE |
 Arianta arbustorum repellini HELICIDAE |
 Arianta chamaeleon carnica HELICIDAE |
 Arianta chamaeleon chamaeleon HELICIDAE |
 Arianta chamaeleon wiedemayri HELICIDAE |
 Arianta stenzii HELICIDAE |
 Arion circumscriptus ARIONIDAE |
 Arion distinctus ARIONIDAE |
 Arion euthymeanus ARIONIDAE |
 Arion franciscoloi ARIONIDAE |
 Arion intermedius ARIONIDAE |
 Arion isseli ARIONIDAE |
 Arion obesoductus ARIONIDAE |
 Arion rufus ARIONIDAE |
 Arion subfuscus ARIONIDAE |
 Arion vulgaris ARIONIDAE |
 Ariunculus mortilleti ARIONIDAE |
 Ariunculus speziae ARIONIDAE |
 Auriculinella bidentata ELLOBIIDAE |
 Avenionia ligustica HYDROBIIDAE |
 Avenionia parvula HYDROBIIDAE |
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