[1] This species occurs in: The type locality is Pu Luong Nature Reserve, on a limestone hill near the small native village Am, 20°27.39'N 105°13.65'E, Thanh Hóa Province, Vietnam.

The decollated shell consists of five somewhat flattened whorls, separated by a slightly indented suture and increasing gradually in width.

Peristome is continuous, whitish, thickened and broadly reflexed; basal side more or less semicircular.

[1] Lamella parietalis (= superior) is connected with the spiralis, rather prominent, reaching the margin of the peristome, which forms an obtuse angle at that site.

Its topwhorls increase more rapidly in width, which gives the shell a more fusiform shape, and the lamella subcolumellaris is not visible in a frontal view.