Shell wider than tall, breadth less than 8mm.
If the maximum breadth is less than 8mm. AND the number of whorls is 4 OR MORE, then check the descriptions below.
Discus rotundatus
side view
Discus rotundatus
umbilical view
Discus rotundatus
apical view
Discus rotundatus rotundatus (O.F. Müller 1774)
Description: 5.5 - 7 mm. broad. Shell almost discoidal, with a slightly raised spire, and with 5½ to 6 narrow, tightly coiled whorls which are distincly keeled at the periphery, and which have coarse transverse ridges with finer intermediate striae. The colour is pale yellowish-brown with reddish-brown transverse stripes at regular intervals. The umbilicus is deep and wide.
Habitat: Moist sheltered places of all kinds: woods, under ground litter and stones, in damp herbage; often among rubbish in gardens.
Oxychilus alliarius
side view
Oxychilus alliarius
umbilical and apical views
Oxychilus alliarius (J.S. Miller 1822)
Description: 5.5 - 7 mm. broad. Shell with 4 - 4½ very gently convex whorls; spire a little raised; last quarter whorl sometimes slightly compressed and downturned. Umbilicus rather broad and eccentric. Shell smooth, glossy, and semitransparent, faintly and regularly striate, horn-coloured or pale yellowish-brown or greenish, often paler below. Body dark bluish-grey, smelling strongly of garlic if disturbed or fingered.
Habitat: Ubiquitous: woods, fields, rocks, occasionally in gardens and greenhouses. Tolerant of poor acidic places such as conifer plantations.