Holotype: shell 16.4 x 14.3 mm; colour light brownish.
Protoconch multispiral, with 21/4 whorls (including a brown nucleus of 0.5 whorl, maxi¬mum diameter 0.4 mm), exposed height 0.9 mm, maximum diameter 1.1 mm. Protoconch vaguely delimited by start of teleoconch spiral sculpture.
Teleoconch with 41/8 whorls. Sculpture on first teleoconch whorl is mainly spiral: two strong spiral cords, a minor one and a strong one at the shoul¬der. Axial sculpture is hardly discernible. From the second teleoconch whorl on, an axial sculpture of broadly rounded ribs develops, forming pointed coronations (but very often eroded in older shells) on the shoulder of younger whorls. On the body whorl, the axial ribs have a squamose aspect be¬cause of the multiple lamellae they are formed of. Sutural ramp (narrower than in T. scala n. comb.) bordered on the shoulder by a raised spiral ridge. The axial ribs, on crossing over the sutural ramp, form broad ridges composed of several lamellae reflected adapically on the upper part of the ridges. Near the sutural line, the height of these ridges is almost zero, so that a narrow groove is left between the ridge and the sutural line. Spiral sculpture on later spire whorls consists of three broad bands, with three secondary spirals in between; the second main spiral forms a small carina on the whorl. The last whorl has, apart from a very broad compound spiral band at the shoulder, six primary spirals and 3 or 4 secondaries in between.
Aperture rounded trigonal. Columellar side smooth; two columellar folds (posterior one the strongest), and a very faint one at the rim of the
vaguely indicated siphonal canal. Outer lip with seven inner lirae; three small parietal teeth on the truncated posterior side of the aperture. Umbilicus widely open almost to the top of the shell; umbilicus depth in function of total shell heigth: x = 87%
The largest shell seen, from Mauritania, measures 23-7 x 18.5 mm.

Three discrete areas are known: Angola; Liberia to Ghana (northwestern Gulf of Guinea); Senegal and Mauritania. Bathymetry: between 12 and 60 m.