The Systellommatophora is a clade of primitive, air-breathing slugs, according to the taxonomy of the Gastropoda.
Sitala is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Durgellinae of the family Helicarionidae.
Ampelita is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Acavidae.
Boucardicus is a genus of land snails with an operculum, terrestrial gastropod mollusks in the family Cyclophoridae.
Ctenophila is a genus of small air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Helicarionidae.
Cyathopoma is a genus of land snails with an operculum, a terrestrial gastropod mollusks in the family Cyclophoridae.
Edentulina is a genus of air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Streptaxidae.
Gulella is a genus of very small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Streptaxidae.
Kaliella is a genus of air-breathing land snails or semi-slugs, terrestrial pulmonate gastropod mollusks in the family Chronidae.
Trachycystis is a genus of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Charopidae.
Streptaxidae is a family of carnivorous air-breathing land snails, terrestrial pulmonate gastropod mollusks in the clade Stylommatophora. Six Streptaxidae subfamilies are accepted in the 2005 taxonomy of the Gastropoda by Bouchet & Rocroi.
Polygyridae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea.
Scolodontidae is a taxonomic family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Scolodontoidea.
Smeagol is a genus of small air-breathing sea slugs of the upper intertidal zone. They are pulmonate gastropod mollusks related to land slugs and snails.
Vitrina is genus of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Vitrinidae, the glass snails.
Kalidos is a genus of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the subfamily Helicarioninae of the family Helicarionidae.
Plectopyloidea is a taxonomic superfamily of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the suborder Helicina.
Parvedentulina is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Orthogibbinae of the family Streptaxidae.
Microcystis is a genus of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Microcystinae in the family Euconulidae, the hive snails.
Reticulapex is a genus of air-breathing land snails, shell-less terrestrial pulmonate gastropod mollusks in the subfamily Trachycystinae of the family Charopidae.
