Aperture with 4 - 7 prominent teeth (1 parietal only),usually linked by callus around the bases :externally there is a strong pale transverse crest a little before the aperture. Mouth edge slightly thickened, not strongly reflected. Shell pale brown with a characterisic sculpture of very fine, regular ribbing.
Frequently found in the roots of grass in dry calcareous places such as roadside banks, chalk/limestone hillsides, cliffs and screes and the hollows of stabilised dunes. Intolerant of shade and not usually found in woods.