Description: The polygyrid land snail Cryptomastix mullani clappi from Idaho County, Idaho, USA; col. by M. L. Walton, 1954. (about 11.5 mm in diameter, or approx. 7/16 inch). Date: 1 February 2008. Source: Own work. Author: Tim Ross.
Description: The polygyrid land snail Lobosculum pustula, about 4.5 mm in diameter (approx. 3/16 inches); Leon County, Florida, USA; 1963. Date: January 2008. Source: Own work. Author: Tim Ross.