Calliotropis granolirata, common name the Cape cog shell, is a species of sea snail, a marine gastropod mollusk in the family Calliotropidae.
Description The length of the shell reaches 25 mm.
The shell is small, featuring a conical spire and a rounded base. It is sculpted with prominent spiral cords that bear well-developed granules. The spire whorls have three cords, including one at the periphery, while the base is adorned with four cords. The umbilicus is closed, and the aperture displays a nacreous (mother-of-pearl) sheen when the shell is fresh.
Coloration is uniformly milky-white to pale buff, with a matte, non-lustrous finish.
Distribution A marine species endemic to South Africa, it has been reliably recorded only from deep waters off the Cape Agulhas–Cape Point region, at depths reaching up to 2,750 meters.
References
Vilvens C. (2007) New records and new species of Calliotropis from Indo-Pacific. Novapex 8 (Hors Série 5): 1–72.
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