Vexillum mutabile
Vexillum mutabile, common name the changeable mitre, is a species of small sea snail, marine gastropod mollusk in the family Costellariidae, the ribbed miters. Description The length of the shell attains 19 mm. (Original description) The shell is abbreviately fusiform. The spire is turreted, sometimes elevated, sometimes rather short. The sutures are somewhat deep. The whorls are depressed at the upper part and longitudinally concentrically ribbed. The ribs are narrow, latticed with fine transverse ridges. The shell is whitish, banded with olive-green. The apex is brown. The columella is four-plaited. Distribution This marine species occurs off the Philippines, New Caledonia and Papua New Guinea; also off Australia (Queensland) References Schepman, M.M. 1911. The Prosobranchia of the Siboga Expedition. Part 4: Rhachiglossa. pp. 247-364, pls 18-24 in Weber, M. (ed.). Siboga Expeditie. Monograph 49. Dautzenberg, P. & Bouge, L.J. 1923. Mitridés de la Nouvelle-Calédonie et de ses dépendances. Journal de Conchyliologie 67(2): 179-259 Maes, V.O. 1967. The littoral marine mollusks of Cocos-Keeling Islands (Indian Ocean). Proceedings of the Academy of Natural Sciences, Philadelphia 119: 93–217 Cernohorsky, W.O. 1970. Systematics of the families Mitridae & Volutomitridae (Mollusca: Gastropoda). Bulletin of the Auckland Institute and Museum. Auckland, New Zealand 8: 1-190 Cernohorsky, W.O.