We have advices here from Sligo, Bally-shannon, and Killybeggs, that three stout privateers were seen last week about eight leagues west and by north from the island called Rosses, off the coast of Donegal, to pick up the ships bound from Greenock or Glasgow, to America or the West Indies. A fisherman of Westport, in the county of Mayo, saw them on Wednesday last in the afternoon; they wanted to have spoke with him, but the poor fellow said he supposed they wanted his fish, and not thinking they would pay him for it, the wind being right on shore, he pushed for it, and left them. These pirates have so alarmed the weak and timorous, that in many places of the coast they are afraid they will land, and carry off their effects.