Heights of: shell (1) 26 mm, body whorl (2) c. 90% of 1, aperture (3) c. 75% of 1. Spire profile stepped (4). Faint wrinkles running into large round umbilicus (5). Palatal (outer) lip meets parietal (inner) lip at c. 90º (6). Palatal lip curves into nearly straight, white columellar lip (7). Broad transverse band on parietal lip (8).

Sublittoral, Llŷn Peninsula, Wales. September 2015. Leg. P. Brazier.