Shell moderately large, vermiform, agglomerated, the first few whorls spirally coiled up, then more or less irregularly twisted ; the protoconch small, smooth, globular. Sculpture consisting of irregular transverse rugose growth-marks; the longitudinal striae are inconspicuous or absent altogether. Internal septa are present. Transverse section circular. No operculum.
Animal with the head blackish, with red spots ; margin pale yellow ; foot spotted with red. The head is yellowish behind, brown and dotted with red in front ; mantle broadly bordered with orange.
Type in the Mus. Hist. Nat., Paris. Hab.—Bay of Islands, type (Q. & G.).