We have advice from Dartmouth, That a privateer belonging to one of the United States, has lately captured six prizes bound from Europe for the rebel army under Howe, or the Howes at New York, laden with provisions and dry goods; three of which are safe arrived in port, and the others hourly looked for-We hear they were part of a provision fleet consisting of about 40 sail, without convoy; and we doubt not of giving a farther account of some of the remainder. ¹