Yesterday morning an express arrived from the capes, informing the Committee of Safety that the men of war were coming up the river, and between ten and eleven the alarm guns were fired; and at ten o'clock last night another express came from Reedy-Island, which said that at half after eleven o'clock two men of war with several tenders and prizes were in sight, but no farther advices were received by the Committee when this paper went to press, at half past four o'clock this. afternoon.