« Shell minute, conical-oblong, white, smooth, glossy; whorls 4-5, convex; aperture subcircular, simple; peristome continuous; apex obtuse. » – G. A. Brugnone: Miscellanea malachologica pars prima, Palermo 1873, p.9.

Synonym: alleryana Aradas & Benoit, who write:
« Small species […] conical-elongated, almost ventricose due to the turgidity of its whorls; it has a very dull apex; it is white, almost vitreous and transparent; […] these [the whorls] are four, very convex, even swollen, and separated by a deep suture; the aperture is almost round, although at the top it offers a slight angle, and is somewhat obliquely elongated; it equals two fifths of all the height of the shell; its peristome has no interruption and is simple; the columellar lip is quite distinct, so it leaves between it and the last whorl a very light groove which gives the idea of an almost disappeared umbilical fissure; the base is convex. »

Occasionally, presence of a subsutural ornamentation made of large radial bands of brown, interrupted near the periphery, and which reappear lower down in the form of small suprasutural blotches. Apical area often stained in brown. The species differs from Setia slikorum by its narrower aperture, and from antipolitana by its more convex whorls.