What is "chondrina"

Chondrina is a genus of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Chondrinidae.

All species of Chondrina are restricted to the West Palaearctic. Centers of species diversity are found on the Iberian peninsula, in northern Italy and in the Balkans. The species are restricted to calcareous rocks, and occur only on vertical, exposed rock faces.