Perrinia squamicarinata is a species of sea snail, a marine gastropod mollusc in the family Chilodontaidae.
It is yellowish grey, with dark brown spots at the upper part of whorls and below the periphery.
The outer and basal margins are rounded in outline, thin, thickened interiorly, with 10 spiral lirae.
The columellar margin is cylindrical, only slightly curved, with a rather strong transverse fold.
Its base runs without angle in the basal margin, and is slightly expanded over the umbilicus.