Family Drilliidae

Shell up to 30 mm in length. In larger shells, there are about ten whorls, and about 11 ribs per whorl. The interspaces between ribs are filled with a microsculpture of very narrow spiral lines. Posterior sinus, or "turrid notch", broad, curved. Color varies from a light pink to waxy-cream. The identification was confirmed by Phil Fallon in January 2021.

Shell size to 13 mm; shell turreted, with spire occupying more than 2/3 shell length, whorls forming strong angles on periphery. Sculpture of about 7-9 sharp axial ribs, with sinuous growth lines present. Spiral lines present only on anterior half of last whorl. Aperture elongate with posterior (apical) notch. Anterior canal short. Outer lip strongly curved and forming a flared projection. Color brown with grayish-green periostracum present mostly between ribs.

Shell size to 10 mm; shell turreted, with spire occupying more than 2/3 shell length, whorls forming angles on periphery. Sculpture of about 7-8 rounded axial ribs. Spiral lines present only on anterior half of last whorl. Aperture elongate with posterior (apical) notch. Anterior canal short. Outer lip strongly curved, forming angle. Color white.

Shell size to 4 mm; shell turreted, with spire occupying about 2/3 shell length. Sculpture of about 6-7 rounded axial ribs. Aperture elongate, with notch on posterior (apical) end. Anterior canal short. Color white with large yellowish spots.