Stylommatophora

thumb|A slug on a wall in Kanagawa Prefecture|Kanagawa, [[Japan.]]

Stylommatophora is an order of air-breathing land snails and slugs, terrestrial pulmonate gastropod molluscs. This taxon includes most land snails and slugs. Stylommatophorans lack an operculum, but some close their shell apertures with temporary "operculum" (epiphragm) made of calcified mucus. They have two pairs of retractile tentacles, the upper pair of which bears eyes on the tentacle tips. All stylommatophorans are hermaphrodites.

The Achatinoidea are a superfamily of air-breathing land snails and slugs, terrestrial gastropod mollusks in the suborder Achatinina.

thumb|Testacella maugei in the contracted state

Orthurethra is a clade of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the clade Stylommatophora.

Arionoidea is a taxonomic group, superfamily of air-breathing land slugs, shell-less terrestrial pulmonate gastropod mollusks.

suborder of gastropods

Limacoidea is a taxonomic superfamily of medium-sized to large, air-breathing land slugs and snails. They are terrestrial pulmonate gastropod mollusks in the infraorder Stylommatophora (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

Sigmurethra is a taxonomic category of air-breathing land snails and slugs, terrestrial pulmonate gastropod molluscs. This is an informal group which includes most land snails and slugs.

Parmacelloidea is a superfamily of air-breathing land slugs, terrestrial pulmonate gastropod mollusks in the clade Stylommatophora and the informal group Pulmonata. These are limacoid or keelback slugs.

The Acavoidea are a taxonomic superfamily of air-breathing land snails and slugs, terrestrial pulmonate gastropod mollusks in the informal group Sigmurethra.

species of mollusc

Angustopila is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Hypselostomatidae.

The Rhytidoidea are a superfamily of air-breathing land snails and slugs, terrestrial gastropod mollusks in the suborder Helicina.

The Clausilioidea are a superfamily of air-breathing land snails and slugs, terrestrial gastropod mollusks in the informal group Sigmurethra.

Streptaxoidea is a superfamily of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the suborder Achatinina of the order Stylommatophora.

Helicarionoidea is a superfamily of air-breathing land snails and semi-slugs, terrestrial pulmonate gastropod mollusks in the infraorder Limacoidei.

Dorcasiidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Acavoidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

Holospiridae is a family of gastropods belonging to the superfamily Urocoptoidea of the order Stylommatophora.

genus of molluscs

Agardhiellidae is a family of gastropods belonging to the order Stylommatophora.

Anadenidae is a family of air-breathing land slugs, terrestrial pulmonate gastropod mollusks in the superfamily Arionidae.

The Oleacinoidea are a superfamily of air-breathing land snails and slugs, terrestrial gastropod mollusks in the suborder Helicina of the order Stylommatophora.

Fauxulidae is a family of gastropods belonging to the superfamily Pupilloidea of the order Stylommatophora.

Elasmognatha is a taxonomic grouping, a clade, of air-breathing land snails and slugs, terrestrial pulmonate gastropod molluscs.

species of mollusc