Stenotrema maxillatum

Ridge-lip slitmouths possess small, globose shells, typically chestnut brown in color. The aperture is long, pale, and narrow, with a defined, protruding outer lip. The parietal tooth is hidden behind the outer lip. The ridge-lip slitmouth is most visually similar to Stenotrema hirsutum, except it is smaller and the shell is more globose.^[1]

The ridge-lip slitmouth is endemic to the southeastern United States, where it has been found in Alabama and Georgia. The species is listed as vulnerable.^[2]

This species is most commonly found in leaf litter or on rocks and logs along wooded hillsides and ravines.^[3]