Habitat: it lives on rocky bottoms in the littoral and infralittoral zones.
Distribution: it seems this species is endemic of the Mediterranean. It is common enough.
Notes: unmistakable shell, not much changeable in its outline and in its colour pattern. Stretched in form, scalariform in aspect, sharp-cornered, with about ten large axial ribs on the last whorl making a sort of shoulder below the suture producing some big tubercles. Siphonal canal stretched, straight, columellar callum showing one plica in the upper part. Aperture oval in form, external lip sharp. Operculum corneous, thick, dark brown in colour. It has a slight periostracum and it is either yellow or uniform light brown in colour. Rarely there can be found transversal streaks white in colour. The animal is bright red in colour. Protoconch globose, smooth. Besides the protoconch, yuvenile specimens are recognizable due to their brown colour pattern, with big nodulous knotty tubercles, dirty white in colour. Moreover the surface is crossed by one fine spiral streakiness which is not often clear in adult specimens. It lays its eggs, pink in colour, in typical capsules calyx-like, transparent and coriaceus in consistence. These capsules are about one centimetre high. In the upper part they have a sort of operculum circular, eccentric and surrounded by a thickening. Eggs are laid during the months of May and June. The adult specimens average measures are around 50-60 mm in height.