« Murex with a strong, rough shell, with six or seven ventricose, tuberculated volutions, tapering to a fine point. The tubercles are formed by interrupted, longitudinal ribs, crossed by strong, elevated striae; and in some parts are pointed, or angulated. Apex smooth. Aperture oval, terminating in a long slender canal, which together, rather exceed the length of the reft of the shell; outer lip sharp, and dentated at the edge; margin within crenulated; pillar lip smooth. » – G. Montagu: Testacea brittanica part. I, London 1803, p.262. – Above: a specimen from NE. Atlantic, dredged around Sein island, W. Brittany, NW. France. 11mm.

« We procured a few of this new, and rare species, by dredging in Salcomb bay. It is generally covered with a thick orange-red epidermis, or extraneous matter, that obscures the markings; beneath which the shell is white, tinged with flesh-colour, and sometimes stained greenish. » – Ibid.