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Validity in debate. According to Filmer a synonym of C. pennaceus.
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Antsotso, SE Madagascar
41.75 mm
Last whorl widely conical, solid, spire low with straight or slightly concave outline, shoulder subangulate; protoconch of the holotype of about 2 1/2 whorls but eroded, teleoconch of 7 flat whorls, 4-5 little spiral ribs on subsutural ramp, tubercled and waved on first 3 whorls of teleoconch, than smooth; thick radical growth streaks; aperture narrow, larger at base, surface of last whorl covered with little spiral ribs, wide and raised at base, that fade progressively adapically and vanish near the shoulder, weak axial growth streaks; grey-lilac colour on the last whorl, little sporadic white dots irregularly distributed mainly on the front half, subsutural ramp of last 4 whorls of teleoconch and shoulder of the last whorl covered with alternate elongated brown and little white spots, protoconch and first whorls of teleoconch white, aperture and inner lip blue-lilac, a vertical band on the inner face of the outer lip.
This species was compared with C. carnalis from Angola but not with C. balteatus or C. rattus.