The height of the shell varies between 15 mm and 32 mm, its diameter between 22 mm and 28 mm. The thick, solid shell is imperforate. Its color is a lusterless ashen or whitish, obscurely marked with black zigzag lines and stripes, or with spiral articulated zones or with spiral stripes of black. Sometimes it is nearly unicolored. The
spire is conical with an acute
apex. The about five
whorls are convex. The first one is eroded, the penultimate is very strongly spirally tricostate. The
body whorl has about seven strong carinae. The
aperture is oblique. The outer and basal
lips are either thick and multilirate within, or rather thin and slightly furrowed at the places of the principal carinae. The short
columella is oblique, subdentate at its base and at the insertion spreading in a strong callus upon the parietal wall.[4]
^Donald K.M., Kennedy M. & Spencer H.G. (2005) The phylogeny and taxonomy of austral monodontine topshells (Mollusca: Gastropoda: Trochidae), inferred from DNA sequences. Molecular Phylogenetics and Evolution 37: 474-483.
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