The shell is umbilicate, semiglobose with short spire and rounded, rapidly enlarging last whorl. Whorls 4,5 , a little flattened below the well-impressed suture. Sculpture of uneven, irregularly spaced grooves retractively radiating from the suture over the subhorizontal part of the whorl, elsewhere smooth except for very weak lines of growth. Color dull brown, with four girdles of darker brown alternating with whitish spots; whitish around the umbilicus. The umbilicus is rather large, deep, partly filled by a thick spiral cord with a small thread above it. The aperture is semicircular, oblique, purplish brown within. Peristome thickened at the baso-columellar curve, very shortly adnate to preceding whorl posteriorly. Length 9.6 mm., diam. 9 mm. The calcareous operculum has three principal spiral ridges, but the outer one consists of two ribs, their summits bridged by a thin calcareous layer of narrow radial rods. The inner rib is double or triple at its columellar termination, elsewhere covered with an irregular calcareous deposit. There is a short incipient rib over the nucleus. This species is chiefly characterized by the structure of the operculum. San Juan del Sur, Nicaragua (Lowe).