As Clathurella fuscomarginata Pease
Shell acuminately turreted, ornamented with transverse raised striae, slightly granulose ; outer lip thin ; aperture oval ; canal straight and slightly produced. Colour white, with irregular longitudinal bands of reddish-brown."
LECTOTYPE (here selected) : B.M.(N.H.) Reg. No. 1961153. Length, 9 mm. ; diameter, 3 mm. Two paralectotypes (1961154) : length, 11-5 mm. ; diameter, 4 mm. ; length, 8 mm. ; diameter, 2-5 mm.
REMARKS : The shell is turreted and light, white with flashes of red-brown. The four post-nuclear whorls are ornamented with spirals of bead-like granules, two rows on the first three whorls with a third weaker row at the suture, the next two whorls with a thread-like spiral between the granules ; and the fourth with three rows of granules followed by increasingly obsolete spirals of granules. The columella is sinuous. The fasciole has granular threads. There are three nuclear whorls on the protoconch which are white, shining, and bulbous ; the apical whorl is flattened ; all are slightly oblique, with a row of granules at the suture.