Shell elongate conical slightly fusiform, base not constricted, protoconch a little more prominent than the general outline of teleoconch. Protoconch conical of 6 whorls, all of them since the first one bearing axial ribs, numbering 16 or 17 per whorl, strictly axial on earlier whorls, then more and more prosocline on following whorls; the 3 last whorls of protoconch bearing 3 very weak spiral cords in lower half of whorls, in the intervals between ribs; limit from teleoconch clear-cut, marked by change of colour and start of 2 adult cords. Teleoconch of 13 or 14 whorls with straight sides; the 5 earlier whorls with 2 spiral cords per whorl; a third spiral cord beginning at the sixth whorl, originating from a fine spiral thread in the interval between the 2 cords; a fourth cord beginning at the twelfth whorl, originating between the second and the third cord, but remaining obviously weaker up to the last whorl; 4 unequal cords on last whorls. All the cords prominent and bearing regularly spaced undulations, sometimes with a slight swelling. Suture marked by a fine spiral thread. Intervals between cords bearing very numerous close-set lamellose axial riblets, and a very fine spiral thread on last whorls. Last whorl with a fifth weaker cord, emerging from suture, followed immediately by a sixth cord; the remaining part of base smooth. Aperture quadrangular; anterior canal short and very oblique. Colour plain orange, protoconch a little more brownish.
Size: holotype total height 5.4 mm; width at base 2 mm. Height of protoconch 0.66 mm; maximum diameter of protoconch 0.40 mm.

This species resembles Seila reunionensis n.sp. from which it is undistinguishable on teleoconch characters alone, but is easily separated from it by its protoconch of 6 whorls instead of 2.5. Other remarks will be discussed with the following species.

Réunion. Found dead in hand-dredged sand at 10-20 m off Saint-Gilles-les-Bains, between Hermitage and Boucan-Canot beach.