[Jaap Vermeulen]
spire conical with flat to concave sides. Apex not obliwue. Whorls 5 1/4 - 5 7/8, (moderately) convex; last whorl rounded to angular. Constriction with a parietalis, a longitudinal and a transverse palatalis. Tuba gradually narrowed towards the constriction, slightly angular below. Radial ribs on the spire moderately to widely spaced (2-4 ribs/0.5 mm on the penultimate whorl), with a deeply trough-shaped projection half-way, abrading to a shallowly deeply looped scar, (projection of those close to the tuba double-channeled with both channels about equally deep or with the lower deepest, abrading to a scar with a double deep loop when the shell is observed in front view); those on the tuba widely spaced 91-2 ribs/0.5 mm half-way the tuba), below with an almost tubular, straight to slightly curved projection abrading to a scar with a deep, semi-circular loop. Spiral striation absent or inconspicuous, more distinct on the tuba. Umbilicus open, 0.10-0.30 mm across. Aperture tilted up to 30 degrees with regard to the coiling axis, circular to elliptic. peristome double; outer peristome spreading beyond the inner, either gradually narrowed towards the right side of the sperture or not; inner peristome hardly protruding from the outer, spreading. Spire: height 2.0-2.4 mm; width 1.2-1.6 mm; index 1.5-1.8. Total width 2.7-2.8 mm. Height aperture 0.6-0.7 mm; width 0.6-0.8 mm.