The following narrative of the occurrence is given by the "Castellano"

Yesterday evening, at eight o'clock, GENERAL NARVAEZ was proceeding to the Circus Theatre, where the  QUEEN  attended a performance of "Gizelle".  His Excellencey had with him in his carriage, his Aide-de-Camp, M. BASSETI, and the young 'litteraleur, DON S. BERMADEZ de CASTRO.  The General lives in one of the last houses of the Luna-street.

As he was arriving in front of the Particeli Church, at the entrance of the Desangano Street, two individuals concealed near the church, fired at the same time on the carriage, which moved on, and received some twenty steps further, another discharge.

The general then ordered to drive on to the Basilios guard-house, and within that short distance several more shots were discharged.  On the first discharge, M. BERMADEZ, who sat near the general felt wounded to the forehead.  On the second discharge, M. BASETI fell on GENERAL NARVAEZ's breast exclaiming - "They have killed me !"  He had received a bullet in his skull.

GENERAL NARVAEZ, indignant at such dastardly treachery, ordered the carriage to be stopped despite of the discharges that succeeded one another, and wanted, with the bravery that distinguishes him, along to oppose the assassins, who all wore similar cloaks and hats;  but the latter fled by the Luna and Mata streets, and in other directions without it being possible to seize any amidst such confusion.

M. BASETI was conveyed dying to a house facing the Basilios Convent, whither several surgeons hastened, and determined, although with little hopes of saving him, to attempt the operation of trespanning;  but his wound was a mortal one.

  Meanwhile, GENERAL NARVAEZ had dispatched an officer to the Crcus Theatre, in order to inform the  QUEEN   and the ministers who were with her of the event, and he repaired in person to the quarters of the Peninsula regiment and other military posts.

  The troops were soon at their arms and some patrols scouted the streets.  At nine, the general went to the theatre, in order to appease the alarm of the  QUEEN  and his numerous friends who manifested the utmost interest.

  It was remarked that the GENERAL's great coat, shirt, and gloves were stained with the blood of M.M. CASTRO and BASETI, and on examining the carriage, it was found pierced by twenty bullets, not reckoning those which must have passed through the coach doors.

  The walls of the neighbouring houses also exhibit numerous marks of shots.

  Such is what has passed.  It requires no comment.  It is publicly said that this criminal attempt had long been prepared, and awaited but a favourable opportunity.

  The murder of GENERAL NARVAEZ who has committed the unpardonable crime of maintaining order and respect for the laws of Madrid, after generously triumphing over AYAENEHEISON, was, it is said, to have been the signal for the massacre of all belonging to the parliamentary party.