Shell waxen white, with a vitreous white smooth rounded nucleus of nearly two whorls and eight subsequent sculptured whorls. Spiral sculpture of an undulated more or less nodulous narrow band in front of the suture, separated by the fasciole from an angulation, which in the upper whorls is peripheral, and on the last whorl forms a well marked shoulder; in front of this on the upper whorls are one to three, and on the last whorl between the angle and the anterior end of the canal about a dozen, small sharply elevated threads with much wider interspaces, threads which are, where they intersect the transverse ridges, modified by small sharp nodulations. Transverse sculpture of (on the last whorl 14 to 18) sharp-edged low narrow oblique strongly bent ridges rather than ribs, evanescent on the base and fasciole, but corresponding to the elevations on the presutural band ; these are proportionally stronger and more prominent near the apex, and become obsolete on the last part of the last whorl; suture distinct; whorls moderately full; base subconic, slightly constricted for the short canal; incremental lines distinct, stronger.on the last whorl; fasciole somewhat excavated, smooth except for the curved incremental lines; surface of the shell rather vitreous; aperture of the (not adult) shell rather wide ; anal notch wide, rather shallow; outer lip arched; canal hardly differentiated, short, narrow; pillar straight, anteriorly attenuated. Max. lon. of shell, 9.5 mm; of last whorl, 5.2 mm; of aperture (not quite adult), 3.5 mm; max. lat. of shell, 3.5 mm.
DESCRIBED BY DALL AS Drillia premorra.

This, after thorough study, seems distinct from any described form, and, though not adult, is without doubt a Drillia. Specimens on which the transverse sculpture is exceptionally strong have a somewhat different aspect, and are rougher than the one figured. The sculpture is sharp, and the angle of the bent ridges is peculiarly abrupt. The surface is not shagreened, though the aspect of the shell recalls that of some of the shagreened Mangilias. Later assigned to Crassispira.

Gulf of Mexico. Type location: Gulf of Mexico, off Morro Light, in 400 fms.