Diagnosis: Shell narrow (b/l 0,35-0,39. a/l 0,31-0,35), whorls not shouldered, subsutural region fairly strongly impressed, basal half-whorl evenly convex; siphonal canal shallowly and widely indented dorsally; fasciole relatively strong; parietal nodule large; anal sinus moderately deep; 12-15 somewhat straight to weakly rcversed-sigmoid axial ribs, more or less aligned up spire, with sharp crests and steep sides, extending to rostrum: 4-6 declivous spiral lirae on rostrum; overall surface somewhat silky, with microscopic growth-lines and very fine, dense spiral striae; protoconch conical, of 2,5 smooth whorls, breadth 0,70-0.73 mm, b/h 1,03-1,12; marked with orange brown, mainly between ribs, with darker zones above and below periphery, ribs white in peripheral region. Adult length 17-24 mm.
Description: Shell narrowly claviform (b/l 0,35-0,39, a/l 0,31-0,35), with short base and high, acute spire, teleoconch whorls about 9, suture shallow; each whorl strongly convex anteriorly, with periphery at about basal third, fairly strongly concave below suture, without subsutural cord or sulcus; left side of base of body whorl slightly concave, with moderately strong fasciole and slight false umbilicus. Aperture oblong-ovate, with relatively straight columella and concave parietal region, siphonal canal short and wide, its termination very shallowly and slightly obliquely notched; callus moderately thick, its outer edge slightly raised, parietal pad large, filling posterior angle of aperture, constricting anal sinus; labrum almost straight in side-view, with a distinct stromboid notch, anal sinus moderately shallow, openly and asymmetrically U-shaped, directed slightly adapically.
Sculptured by narrow, suture-to-suture axial ribs, that are more or less aligned up spire, rostrum with 4-8 declivous spiral lirae; body whorl with a large varix just behind lip; entire surface with very fine growth-lines and even liner spiral microstriae. Axial ribs slightly opisthocline, relatively straight to reversed-sigmoid, weaker on subsutural constriction, on body whorl usually extending to rostrum although occasionally obsolete below parietal/columella junction: crests of ribs sharp with relatively steep sides, subcqual to their intervals; 8-12 ribs on early whorls, 12-15 on later ones.
Yellowish-white, patterned with deep brown, mainly between ribs, forming zones above and below periphery, with traces of a third zone at level of columella/ parietal junction, crests of ribs in peripheral region white, back of lip with two brown spiral bands, just visible inside aperture; columella and protoconch white. Protoconch conical, of 2,5 whorls, the 1st somewhat depressed, suture shallow, smooth, except for an arcuate terminal rib; breadth 0.70-0.73 mm, height 0,65-0,68 mm (b/h 1,03-1,12). Dimensions: 24,3 x 9,1 mm. 17,6 x 6,3 mm. Operculum, radula and soft parts unknown.

Mauritius and Reunion Island to Natal.