(Ström, 1768)
Description (shell):
Shell a tall, sharply-pointed cone of seven tumid whorls, slightly turreted, with deep sutures. Sculpture of sinuous, laminar costae, growth lines and weak microscopic spiral striae; costae variable in number (14-25 on penultimate and last whorls), crests sharp and wave-like, tending to overrun base at leading edge. Aperture oval, with shallow anal sinus and rather short siphonal canal (about 50 % of aperture height); distally, the canal bends away from plane of aperture; outer lip thin, smooth internally.
Size:
Up to 15 x 7.5 mm.
Colour:
Yellowish with pink tinge, throat darker.
Animal:
Distal third of cephalic tentacles narrow, with eyes set on lateral bulges at junction with broader basal portion. Foot with double-edged anterior margin and slight anterio-lateral horns; operculum small, oval.
Habitat:
On stony and gravelly bottoms, from LWST to 200 m.
Distribution:
Not uncommon in dredged samples. Circumboreal, extending south into northern North Sea and down western coasts of British Isles to Biscay (Distr. T. truncatus).