Shell is approximately ear-shape with a widely-open, very large, weak lipped aperture. The inner (columellar & parietal) lip (1) is slightly folded back. The small spire distinctly protrudes( 2) beyond the outer (palatal) lip of aperture in apertural view. Longest dimension of shells: left 12 mm, centre 19 mm, right 15 mm. Llŷn Peninsula, Wales, March 2016.