Family Volutidæ.—Sub-Family Mitrianæ.
Generic Character.
Animal——
Shell never turrited or plaited, ovate-fusiform, the base wide, obtuse, and truncated: pillar with 4 plaits: the plaits simple. Outer lip crenulated, or toothed: Aperture at the base effuse, smooth within, and destitute of an internal groove. Nobis.
Types of Form.
1, M. episcopalis. 2, papalis. 3, scabriuscula. 4, Zebra. 5, ferruginea.
Specific Character.
Shell with the spire thickened, and marked by transverse punctured dots: white with crimson spots; inferior spots small and quadrate, the superior large and irregular; pillar 4 plaited.
Voluta vel Mitra episcopalis, Auct. (Lam. Syst. 7. 299.)