Width, 2.5 mm; 5 1/2 whorls; with about 46 riblets on body whorl; apical 1 1/2 whorls smooth.
Spire convexly conic or dome shaped in profile; riblets oblique.
Umbilicus narrow, about 1/7 the width of the shell; base convex, with riblets covering most of base, small smooth area in front of aperture; large parietal lamella extending to margin of parietal callus; infraparietal lamella visible in this image as a narrow, gray line; inter-parietal lamella deeply recessed and not visible in ventral view; 4 palatal lamellae visible through base of shell, 1 and 2 large, 3 and 4 smaller, lamellae penetrating deeply within body whorl, inner end of 1 nearly reaching parietal callus, lamella 4 penetrating least; 2 additional parietal lamellae located on side wall of body whorl above the periphery, not visible in ventral view.