16 Euspira catena COMPARE Euspira pallida

16 Euspira catena COMPARE Euspira pallida

Operculum made of translucent conchiolin (1).Distinct sutures (2) give the spire whorls a stepped profile. Broad white columellar lip (3). Palatal (outer) lip meets parietal lip at c. 90° (4). Flat whitish apical protoconch (5).  

Height 28 mm, sublittoral, St. Lawrence Estuary, Canada. © BY-NC C. Nozères.