Craspedaria coronulaCraspedaria coronula is a species of air-breathing land snail in the family Geomitridae.DistributionCraspedaria coronula is endemic to the Madeira Archipelago, where it is only found on the Desertas Islands. It was originally described by English malacologist Richard [Thomas Lowe] in 1852, from Quaternary fossil deposits found in the southern part of Bugio Island.DescriptionIt has a conical white shell, in width and in length, with five whorls.