Helicoidea is a taxonomic superfamily of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the clade Stylommatophora.
Discula bulverii is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Geomitridae.
Falkneria camerani is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Helicodontidae.
Xerotricha bierzona is a species of air-breathing land snail, terrestrial pulmonate gastropod mollusks in the family Geomitridae, the hairy snails and their allies. This species is endemic to Spain.
Plentuisa vendia is a species of land snail in the family Geomitridae, the hairy snails and their allies. It is endemic to Spain.
Noricella oreinos is a species of small, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Hygromiidae, the hairy snails and their allies. This species is endemic to Austria.
Xerosecta giustii is a species of small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Geomitridae, the hairy snails and their allies. This species is endemic to Italy. Their shell is colored grey to whitish grey with dark reddish brown apex (end). There can be weak and thin interrupted brown bands. The animal is yellowish grey with a pale grey head and neck. The maximum size is 1 inch. Their diet consists of open Mediterranean shrub land vegetation, on the soil and under stones, also on branches of bushes and grass stems. There is only one known population that occupies an area of not more than 100 x 100 m. They are threatened by habitat destruction.
Xerocrassa caroli is a species of air-breathing land snail, a pulmonate gastropod mollusk in the family Geomitridae, the hairy snails and their allies. This species is endemic to Spain, where it occurs in the Pityusic islands of Ibiza and Formentera. The species joined at least 8 subspecies.
Xerocrassa cisternasi is a species of air-breathing land snail, a pulmonate gastropod mollusk in the family Geomitridae, the hairy snails and their allies. This species is endemic to Spain, where it is restricted to the north-eastern part of the island of Ibiza and the surrounding islets. The species joined at least 10 subspecies
Zarateana arganica is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Geomitridae.
Xeroplexa is a genus of small, air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Geomitridae, the hairy snails and their allies. The genus is mainly distributed along western Iberian Peninsula, although X. intersecta spreads from northern Iberian Peninsula to central Europe and British Islands. Xeroplexa species were within genus Candidula until a molecular phylogeny revealed the polyphyly of Candidula, and the genus Xeroplexa Monterosato, 1892 was recovered.
Geomitridae is a taxonomic family of small to medium-sized air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea.
Orexana ultima is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Geomitridae, the hairy snails and their allies; the species is endemic to Fuerteventura island.
Zarateana is a genus of small, air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Geomitridae, the hairy snails and their allies. The genus is endemic to the Iberian Peninsula.
Xeroplexa setubalensis is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Geomitridae. This species is endemic to Portugal. The taxa was previously placed within the genus Candidula until a molecular phylogenetic study revealed its current status. This taxon is the type species of the genus Xeroplexa.
Xerogyra is a genus of small, air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Geomitridae. The genus is distributed in the Italian Peninsula. Xerogyra species were within the genus Candidula until a molecular phylogeny revealed the polyphyly of Candidula and, the genus Xerogyra Monterosato, 1892 was recovered.
Xerogyra spadae is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Geomitridae.
Xeroplexa scabiosula is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Geomitridae. Although this species was named by Locard (1899), it was treated as synonym of X. belemensis by Gittenberger (1993).
