Vexillum infaustum, common name the unlucky 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 14 mm, its diameter 6 mm.

(Original description) The ovate shell is rather solid. It is longitudinally ribbed in a waved manner, transversely impressly striated. The shell has a fleshy straw colour, the impressed striae faintly stained here and there with reddish brown. The columella is three-plaited.Reeve, L. A. (1844-1845). Monograph of the genus Mitra. In: Conchologia Iconica, or, illustrations of the shells of molluscous animals, vol. 2, pl. 1-39 and unpaginated text. L. Reeve & Co., London

(Described as Mitra fulvosulcata) The ovate shell is solid. The spire is somewhat acuminate. The whorls are longitudinally ribbed. The ribs are numerous, rounded, transversely furrowed, the furrows being tawny coloured, especially conspicuous on the ribs. The columella is four-plicate.Melvill, J. C. (1888). Descriptions of fifteen new species of Mitra. Journal of Conchology. 5(9): 281-288

Distribution This marine species occurs off Mauritius.

References

External links W.O.Cernohorsky, The Mitridae of Fiji - The Veliger v. 8 (1965-1966)