- Hyalinia abchasica Retowski, 1914 (junior synonym) Vitrea contracta, the milky crystal snail, is a species of small, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Pristilomatidae.

The coiled, rather small, dextral shell is strongly oblate-conical, almost disc-shaped.

The aperture has a flattened-elliptical shape in its entire circumference and is obliquely crescent-shaped because of the deep cut of the previous whorl.

[2][circular reference] This species occurs in countries and islands of central and northwestern Europa including: These snails live hidden in the litter, in loose soil, at the foot of rocks or among rubble, in meadows with rubble, forests with stones and rubble, but also in cool gorges and swampy alder grooves, even in holes and crevices.

The species occurs in moist to dry habitats on calcareous soils.