This paper describes two new species based on material collected from localities along the east coast of the island of Masirah, Oman. No living specimens were found of either species and thus the descriptions are based on shell characters alone. The first is a sinistral whelk, Fusinus (Sinistralia) gallagheri sp. nov., which was studied by both authors. The other species, Bu1lia rogersi sp. nov., was described by one of the authors only (K.R.S.).