Width 12.5 mm; 7 whorls; upper surface irregularly and strongly wrinkled, glossy.
Umbilicus 1/12 or less the width of the shell; base more glossy than upper surface, wrinkles very weak or absent, with fine longitudinal striae; internal callous lining behind lip shows through base as a broad pale mark (usually more distinct than in this illustration).
Spire convexly-conic; with broad internal callous on base behind lip.
Lip very thin, often torn or dammaged.
Notes: This specimen from Missouri, Washington Co., Washington State Park, under leaves and logs.
Type locality: Missouri.
Height of spire variable.