(Alcadia) (Alcadia) is a biological genus in the family Helicinidae and order Neritopsina.
Alcadia striata
Alcadia
Bourciera
Calidviana
Calybium
Eutrochaetella
Geophorus
Helicina
Hemipoma
Hendersonia
Heudeia
Lucidella
Ogasawarana
Oligyra
Olygyra
Orobophana
Pleuropoma
Pseudotrochatella
Pyrgodomus
Schasicheila
Stoastoma
Stoastomops
Sturanya
Viana
Waldemaria