Shell glossy, short, broad, swollen, apex slightly mammillate. Whorls ten, separated by deep sutures. Colour : the lower whorls are entirely dark chocolate; towards the apex the lower half of each whorl becomes gradually paler, reaching a buff colour at the apex, the chocolate persisting above as a narrow sutural thread; outer lip dull white. Sculpture: on the base are three plain spiral keels. The ultimate and penultimate whorls have three equally spaced and sized keels bearing numerous (more than twenty) small, close-set, ill-defined gemmules. In transverse order the gemmules are set in perpendicular rows. On the antepenultimate the median gemmules shrink in size, and a few whorls higher up the median row pinches out. First whorl dome-shaped; second inflated, with two small, sharp, plain-spiral keels; on the third the keels commence to resolve into gemmules, after which the adult sculpture is assumed. Aperture rounded, closed on the right by a spur crossing the pillar lip; anal notch a deep subcircular orifice. Canal extremely short, recurved. Length 4,2; breadth 1,5 mm.

In colour and contour this resembles T. obesida, Jousseaume, from which the protoconch and anal notch immediately separate it.

Australia. New South Wales.