Holotype: Shell small for the genus; surface glistening white, back of last whorl faintly flesh colored; length of aperture plus canal more than 1/3 the length of the shell; subsutural area markedly concave, outline of whorls tabulate. Protoconch of 3 smooth whorls with a small central tip, first postnuclear whorl carinate and nodulous with the emergent axial ribs; postnuclear whorls 8.5. Axial ribs 8 on early whorls, increasing to 15 on the penultimate whorl, obsolete in the subsutural area and fading out upon the pillar; back of last whorl with a massive thickened rib 1/2 turn back, axial ribbing obsolete on back of last whorl; spiral sculpture of evenly spaced, deeply incised striae, faint upon overriding the axial ribs, more pronounced upon the pillar. Sinus deep, U-shaped, bordered on the inside by curved parietal callus, lip edge thin, at an angle to the moderately long, deeply notched anterior canal, inner lip slightly raised above the pillar. Height, 11.0, diameter, 3.8 mm.

Discussion: Agladrillia gorgonensis is the only uniformly white species and is the only one characterized by the tabulate outline to the whorls.

Pacific Colombia. Type Locality: North of Gorgona Island, Colombia.