OLIVA purpurata.
Purple-mouthed Olive.
Family Volutidæ.—Genus Oliva. Auct.
Sub-genus, Olivella.
Characters.
Spire of the shell lengthened, conic, the tip acute: inner lip not thickened, outer lip straight: base of the pillar curved inwards, and marked by 2 strong plaits; upper plaits evanescent, or entirely wanting. Aperture effuse, and closed by an operculum? Nobis.
Specific Character.