Several shells from Shark Bay (stations 1, 3, 9, 12, 14, 16 and 20) are very pointy, with about 16 whorls which slowly increase in size, brown; on the middle whorls there are two rows of tubercles, light grey in colour; on the last whorls another row of tubercles develops between the first two, on the base three smooth threads are visible. Height of the figured shell 6.5 mm, diameter 1.5 mm.

Diagnosis
Lectotype height 4.2 mm. Shell conical and quite slender. Teleoconch of 10 whorls, which have two main tubercled spiral cords. Between them, a third cord is visible as a fine thread at mid height, and then it develops into a spiral cord only on the last whorl. A very fine suprasutural cord is present, but barely visible. The last whorl has a fourth tubercled spiral cord, and the base has a single smooth cord. The peristome has a posterior siphonal canal. The protoconch is composed of five whorls: the first two whorls have granules and tiny axial threads near the suture, the other whorls have two spiral keels and axial riblets. Colour brown with grey granules.

Remarks
No specimens of 6.5 mm height were found, notwithstanding it is stated that the illustrated specimen is this size. The only specimen of comparable size is a subadult (hence not the illustrated specimen) (here selected as paralectotype B), while the lectotype and the other adult specimens range around 4 mm.