Shell of medium size, biconical, pure white. Protoconch smooth and glassy, of 11/2 whorls, nucleus small and oblique, sculpture beginning as transverse riblets followed by a single spiral keel. Mature whorls six, regular, angular at the periphery, straight below, and sloping to the suture. Sculpture two spiral keels, the strongest on the periphery, broken into small tubercles, weak on the body whorl, but stronger on the penultimate and earlier whorls, channelled on the shoulder with another line of flattened oblique tubercles just below the suture. Spiral sculpture below the peripheral keels is faint, and there are traces visible of transverse threads on the columella. Aperture pyriform, comparatively short, outer margin slightly broken, but showing the sinus to be higher than in the other species, rounded and posterior to the peripheral keel, the fasciole crossed by minute growth lines. Inner margin slightly flexed, sharply angled with the columella, broad and smooth within, the canal short, rather narrow and slightly twisted. Length 15 mm., width 5.5 mm., aperture 6 mm.

This is another distinctive species, not easily confusable with any other. The position of the sinus suggests other relationship, but in all its other characters it is a true Epidirona.

Australia. New South Wales. 70-80 fathoms off Cape Everard .