Caseolus calvus is a species of small air-breathing land snail, terrestrial pulmonate gastropod mollusks in the family Geomitridae, the hairy snails and their allies.
The subspecies Caseolus calvus galeatus (R. T. Lowe, 1862) endemic to Madeira is globally extinct.[2]
This species of land snail lives in Madeira, Portugal.
Caseolus calvus is a species of small air-breathing land snail, terrestrial pulmonate gastropod mollusks in the family Geomitridae, the hairy snails and their allies.