Of thoſe which have the body of the ſhell beſet with tubercles and ſpines, there are, beſide the before deſcribed, 1. The Murex, with a depreſſed clavicle, the body covered with large, black ſpines. 2. The long, clavicled, greyiſh Murex, with black ſpines, and a plicated ſurface between them.
Source: wiktionary