As Seilarex:
Shell small, very tall, slender and gently tapering. "Whorls 12, including a typical polygyrate protoconch of 4 whorls: apex smooth, remaining whorls with a central rounded keel and crossed by close, moderately strong, slightly obliquely-retractive axial ribs. Spire tall, about 4,5 times height of aperture plus canal. Outline of whorls strongly convex. All postnuclear whorls sculptured with five strong rounded, raised, regularly spaced spiral cords, uppermost one immediately below upper suture, lowest one immediately above lower suture, third one ah the middle. The whole crossed by regular, vertical, low, foldlike axials, about 15 per whorl, producing weak nodulous swellings where they cross the spirals and cutting up the surface into rectangular interspaces. The whole surface is crowded with microscopic dense axial growthstriae. Base smooth, concave, with a single small raised spiral thread midway between lowest sutural cord and the pillar. Aperture sub-quadrate with a short, narrow, straight, anterior canal. Peristome discontinuous, thin and sharp. Pillar vertical, produced to a sharp point below, slightly flexed and margined on the inner side by a narrow glaze. Colour pale buff, protoconch reddish-.brown.
Height, 4.5 mm.; diameter, 1 mm. Holotype in author's collection.
Habitat, Tryphena Bay in 5-6 fathoms, Great Barrier Island, N.Z. (A.W.B.P., Jan., 1924) (type). Dredged off Sunday Island, Kermadec Islands (B. S. Bell), Auckland Museum collection.
This makes the first record of the genus in New Zealand waters and also adds a genus and a species to the Kermadec fauna. Kermadec specimens differ from the New Zealand holotype in colour only, the pillar being tinted light reddish-brown and the post-nuclear whorls sparsely spattered with the same colour. The New Zealand shell however has the appearance of being slightly bleached, which may account for the absence of colour markings.