A new species of Muricopsis (M. omanensis n. sp.) is described from the areas of Masirah and Dhofar, Oman. This species is most clearly allied to the Mediterranean M. blainvillei (Payraudeau). The two are differentiated on characters of colour, shape, sculpture and aperture. To date M. omanensis is known only from the Masirah and Dhofar areas, and is probably part of a restricted fauna influenced by cold upwelling currents which typify the oceanography of that region.