Shell 1 has slightly tumid spire-whorls with periostracum eroded off raised sculpture.
Shell 2 has more tumid spire-whorls and periostracum almost complete.
Body-whorl (3) about 70 % of the shell’s height. Transverse oblong bosses (4).
Aperture height (5) about 45% of the shell height. The palatal (outer) lip meets the parietal (upper, inner) lip at about 45º (6) and curves smoothly to the short, deep, oblique, siphonal canal(7). Spiral band a discontinuous line of brown marks (8).
Left: H. 11 mm, Menai Strait, Wales, February 2013.
Right: H. 10.5 mm, Portland, Dorset, England, April 2012.