Aperture with 6 - 10 prominent teeth including at least 2 parietal, 2 columellar and 2 palatal. Mouth edge slightly thickened and reflected; the outer lip has a markred central indentation. Shell ovoid; dark chestnut-brown with a few feeble growth-lines.
Mainly found in lowland wetlands such as fens, marshesreed swamps and flushes. Tends to avoid places where the water-level fluctuates. Often under flood rubbish at lake margins or in saturated ground litter.