Shell elevated, white, the anterior slope much the longer and conspicuously arched, the posterior slope excavated concavely, the apex elevated, subposterior and much incurved, the nucleus generally gone in adults, leaving a little scar; sculpture stronger and more distinctly cancellated in some specimens than in Cocculina rathbuni, the young are more sharply sculptured than the old, and at the intersections the riblets are nodulous or even slightly spinose; the shell is smaller than in (Cocculina rathbuni reaching about 8.0 mm. in length.
Four specimens, all apparently females, were available for examination, of which two were dissected. The soft parts in general were as in Cocculina rathbuni, except that the head and muzzle are much elongated, the sinus behind the head, therefore, is deeper, the gill longer, projecting out on the right side; the tentacles are longer, and the foot proportionally shorter, than in Cocculina rathbuni; the mantle margin more puckered (by the effect of the alcohol ?); the margination of the muzzle is interrupted in front by the papillose oral area, which in this species distinctly forms the end of the muzzle, the effect of which is to modify the marginated part into two lappets, one on each side, extending from the end of the muzzle to the anterior edge of the foot. In the dentition the bands of uncini are proportionally longer and wider, and the rhachidian tooth is smaller than in Cocculina rathbuni.

Shell small (4.2 mm), moderately thick, white, arched, high (SH/SL = 0.52). Apex well posterior of center (P/SL = 0.60). Protoconch well below apex, 220 µm in length, with posterior margin embedded in posterior slope of shell. Protoconch sculpture of irregular, roughly parallel, raised cords per-pendicular to the long axis of the shell, confined to bulbous portion of protoconch. Surface between ridges pitted. Teleoconch sculpture of radial ribs dominating concentric ridges. Anterior slope strongly convex, posterior slope weakly concave. Aperture not planar, weakly ovate, narrower anteriorly. Shell edge moderately thin. Periostracum thin.

The Colombian specimens closely resemble Fedikovella beanii taken in the eastern Caribbean (see McLean & Harasewych 1995) in general morphology and in having a characteristic sculpture along the early portion of the protoconch. However, radial sculpture is dominant in the Colombian specimens, whereas concentric sculpture predominates in the Atlantic specimens. Leal & Harasewych (1999:123) reported differences in protoconch sculpture and reproductive anatomy between the abyssal type species of Fedikovella (F. caymanensis Moskalev, 1976) and the bathyal F. beanii, and suggested that a reassessment of the relationship of F. beanii may be in order.

Massachusetts, New Jersey, Guadalupe, Martinique, St. Vincent, Barbados (Dall 1889, McLean & Harasewych 1995) at depths of 210-1049 m. The new records from Colombia extend the species range to the southwestern Caribbean.