Cranopsis columbaris: Diagnosis. Apex curved posteriorly, dorsal-located. Height 68% of length; width 70% of length. Sculpted by ca. 30 radial, low cords, with rather triangular pustules; interspaces twice cords' width. Foramen with tall edges; located dorsally.
Description. Shell size up to 2.8 mm; tall, cone-like; height 68% of length. White-translucent, with minute white-opaque pits in interspaces of radial sculpture. Protoconch one rounded whorl; situated on right; smooth, opaque; ca. 170 µm. Foramen cuneiform (pointed anteriorly), width ca. 30% of length; located dorsally, preceding anterior slope; 9% of shell width, 22% of shell length; edges regular, thick, projected dorsally as short wings. Groove anterior to foramen very narrow; flanked by pair of cords similar sized as neighboring cords; length 84% of shell height. Shell profile conical, apex curved posteriorly, in dorsal quarter of shell height, located between middle and posterior thirds (in dorsal view); teleoconch of 1.2 whorls. Sculpture of ca. 30 radial cords, with small, rather triangular pustules (longer axis radially arranged); cords gradually increasing in width towards aperture; ca. 10 primary cords, in ventral half secondary cords gradually appearing; pustules slightly elevated, scale-like, twice as long as wide, connected with neighboring pustules of same radial line by narrow folds; interspaces between successive radial cords ca.3 times their width; ca. 40 pustules along cords close to median line. Selenizone short, narrow, shallow, anterior part as wide as foramen, 33% of shell length. Aperture planar, outline elliptical, width ca. 70% of length; edges slightly denticulated by radial sculpture. Inner surface smooth, glossy; narrow furrow located in front of fissure, fainting at short distance from anterior edge. Septum ca. 60% of shell height; ca. 3 times higher than wide; ventral edge somewhat straight, 41% of aperture width; gradually narrowing up to posterior edge of fissure.
Measurements (in mm). Holotype 2.8 by 1.9 mm.

Cranopsis columbaris: Type locality. Brazil. Ceara, off Fortaleza, Canopus bank, 2°12'43"S 38°18'52"W, 250 m
Distribution. Continental slope off Ceara, Brazil.
Habitat. Sandy bottoms with debris, 250 m (dead specimens).