We have no certain intelligence from Portugal this week ;
and the rumours which reach us by way of Paris are unusually vague. It is said that the Duke iv CADAVAL and General MOLELLOS have submitted to Don PEDRO ; and that BouamoNT, who had been worsted in a skirmish with VILLA FLOR, is deprived of all hope of attacking Lisbon successfully. MIGUEL and his staff are reported to have fled into Spain, in the direction of Badajoz. These accounts were given by couriers who passed through. Bayonne at the end of last week, on their road to Paris. We state them merely as unauthenticated rumours. Donna MARIA is expected to arrive at Portsmouth from Havre this day, on her way to Lisbon. The Soho steam-boat was hired. to convey her from Havre.