Ovoid, spiral, translucent, brown operculum with a fine black speckling (1) ; lighter colour where about a third of it is attached to the underlying white opercular disc (2). Yellowish perimeter of disc shows through the translucent operculum (3).
Ovoid, spiral, translucent, brown operculum with a fine black speckling (1) ; lighter colour where about a third of it is attached to the underlying white opercular disc (2). Yellowish perimeter of disc shows through the translucent operculum (3).