Genus Sibogasyrinx Powell, 1969

Leucosyrinx (Sibogasyrinx) Powell, 1969: 343 .

Type species

Surcula pyramidalis Schepman, 1913 (original designation).

Diagnosis

Shell small to large, adult length from 27 to 65 mm, narrowly fusiform, rarely pagodiform, with concave to nearly flat subsutural ramp. Spiral sculpture variously developed, always present below shoulder, comprising narrow, close-set cords, often also on subsutural ramp, Shoulder with a row of strong nodules, often obsolete on last whorl.

Venom gland does not pass through nerve ring and opens into oesophagus within or posterior to nerve ring. Radula usually with central tooth, absent in one species, marginal tooth morphology variable, folded longitudinally.