Pseudoscilla bilirata is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.

The spire is high and narrow, with a blunt, globular, regular, one-sided, hyaline, glossy tip, consisting of one whorl on which some very faint longitudinal striae are doubtfully traceable.

The shell contains six whorls, with a contour very much angulated by the spiral keels and the broad sunken suture.

Across the body the lip runs in an oblique straight line with a projecting strong edge till past the umbilicus, when it lies close back on the body and though thinner continues till it joins the outer lip.

[4] This marine species occurs on the Atlantic coast of Africa, from Morocco in the north to Angola in the south.