Amastra tricincta

The shell is perforate, ovate-conic, very small, and thin, with a slight sheen.

The subsequent whorl is very finely costulate or sharply striate, with a subtle angularity near the suture.

The later whorls are moderately convex, adorned with fine, irregular growth wrinkles.

The shell is dark brown, with the body whorl featuring opaque white revolving bands at the suture, periphery, and around the umbilical slit.

It also bears several narrow, obliquely longitudinal black streaks, while the upper whorls are reddish-brown.