Shell of similar shape and appearance to epentroma, but larger, pure white, with four primary spiral ribs, and modifications in the details of the protoconch. The latter is paucispiral and similarly shaped, but the four spiral cords are weaker and rather late in developing, so that the initial whorl is rounded and papillate, not tabulated. Spire almost 1,5times height of aperture. Axials broadly rounded and strong, 12 on the body-whorl. Four primary spirals on spire whorls and close-spaced, moderately strong, subsidiary spirals in the interspaces. The four spirals result from the strengthening of an inter¬mediate between the uppermost spiral and spiral 2, and another between 2 and the lower suture. No. 3 is immersed by the succeeding whorl.
Height, 7.8 mm.; diameter, 2.75 mm. (Holotype).
Holotype in Auckland Museum (Dr. H. J. Finlay collection).
Locality: 60 fathoms off Otago Heads.