Strombus helli Kiener, 1843. (Synonym: Strombus cancellatus Pease, 1861a.) Length, 21 mm; diameter, 11 mm. Shell: rotund, solid; axially plicate with cancellate sculpture; white with a violet aperture. Spire: 9 to 10 whorls; apical whorls attenuate; last whorl rotund; suture barely impressed. Sculpture: small, crowded axial ribs forming pinched knobs on the last third of the last whorl; between the ribs a series of spiral threads, weak on the apical whorls, cordlike on the abapical whorls. Aperture: elongate; outer lip thin but strong, serrated; stromboid notch well-formed and flanked above and below by a flaring tonguelike flange or tooth; columella with about 24 wavy, spiral lirae. Color: usually white, sometimes mottled with various shades of brown; columella and aperture violet.
This species is common in dredge hauls at depths of 12 to 130 m, and dead shells were brought up by the Albatross from 480 m. Worn shells are occasionally found in drift along the northern beaches in the Hawaiian Islands.
S. helli is endemic to the Hawaiian Islands.