The “Armoured Tudicula” is a particularly spiny member of the subfamily Vasinae which looks remarkably like a muricid of genus Bolinus, especially Bolinus cornutus (L., 1758). This species can be easily told apart from a true muricid, however, by its lack of varices and a large round, smooth protoconch (as opposed to a smaller and more elongate one typical of true muricids). – adapted from Chong Chen’s post