Semilimax pyrenaicus

Vitrina hibernica J. Taylor 1908 Semilimax pyrenaicus is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Vitrinidae.

The shell aperture has a mouth membrane which runs from the umbilicus along the inside of the outer lip.

This is called a Lusitanian distribution and was at one time thought to represent the survival of species in an ice-free land mass that served as a refugium during the last ice age.

It now seems likely that these species were re-introduced into Ireland after the last glaciation, probably accidentally with human migration in the late Paleolithic or early Mesolithic.

[2] It typically inhabits humid and shady places, between rocks, or in Ireland in woodland amongst moist ground litter, usually on non-calcareous soils.