Two shells from Station 95 are quite similar to the previous species [Triphora patricia], but less slender; the edge of the last whorl is less pronounced and even includes a second thread. There are about 9 whorls, which are initially shaped and sculptured as in the previous species, again having three rows of tubercles and a smooth thread. This forms on the last whorl an edge, which is somewhat obtuse, under this edge there are still two threads visible. Siphonal canal moderately long, straight; diamond-shaped aperture. Height 5 mm, diameter 1.6 mm.

Diagnosis
Lectotype height 4.8 mm. Shell weakly conical; teleoconch with 5-6 whorls with three tubercled spiral cords and a fourth suprasutural, smooth cord. Two further smooth spiral cords on the base. Simple peristome, without bifurcating cords. Paucispiral large apex of 2-3 whorls; the transition to teleoconch is difficult to spot. The first protoconch whorl is ornamented by three strong smooth spiral cords; the two lower cords develop strong granules on the second whorl. Colour white.

The type lot contains three specimens. Two are conspecific and belong to T. agulhasensis; a third one has strong tubercles on the first protoconch whorl instead of the smooth keels in T. agulhasensis, and does not belong to this species.