Polygyriscus is a genus of minute air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Polygyridae.

This is a monotypic genus[2] of snails containing the single species Polygyriscus virginianus, known commonly as the Virginia fringed mountain snail or the Virginia coil.

The Virginia coil was listed as federally endangered species on 2 August 1978.

It is very rare; the snail has only been seen on bluffs along the New River in Pulaski County, Virginia.

long and may burrow up to 6 feet into the soil.