﻿AbstractA new morphologically distinct species of cowry (familyCypraeidaeRafinesque, 1815) is described from the Late Pliocene Roe Calcarenite of the Roe Plains, Western Australia. Previously assigned toUmbiliahesitata(Iredale, 1916), the new species differs morphometrically from related taxa and is differentiated fromU.hesitataby a number of shell features including a prominent, projecting protoconch, less extended posterior and anterior terminals, coarser columellar teeth extending onto the base, and well-developed, thickened anterior flanges, supporting a rounded anterior extremity with blunt anterior tips.Umbiliatomdarraghisp. nov. is the thirdUmbiliaspecies to be described from the Pliocene.