Auriculella diaphana

The length of the shell attains 7 mm, its diameter 4 mm

(Original description in Latin) The shell is sinistral (left-handed) and possesses an ovate-conic shape. It is characterized by being extremely thin and having a horn-like (corneous) texture. The surface is marked by brown streaks and is obscurely encircled around the middle of the body whorl by a dark brown zone.

There are five and a half whorls, which are slightly convex, and the suture is simple in form. The peristome is thin and only slightly dilated. The columella is scarcely folded and somewhat reflected, a configuration that forms a small umbilical fissure. It is joined to the lip by an extremely thin callous deposit. Finally, the parietal lamina is thin.^[2]

This species is endemic to Hawaii.

• Cowie, R. H., Evenhuis, N. L. & Christensen, C. C. (1995). Catalog of the native land and freshwater molluscs of the Hawaiian Islands. vi + 248 pp. Leiden: Backhuys Publishers.