Arinia H. Adams & A. Adams, 1856

Arinia H. AdamS & A. AdamS, 1856: 288. Type SpecieS (by monotypy): Cyclostoma minus G. B. Sowerby I, 1843.

Diagnosis. Arinia is characterized by a lack of a prominent columellar lamella in the aperture, the position of the constriction usually in the middle or the last quarter of the last whorl and a smooth outer surface of the operculum.