THE Italian Opera (Maretzek's troupe) has been for the past two weeks at the Boston Theatre, and the season has proved a failure both financially and musically. Lucca and Jamet are not able to create a success, when all the other artists and the entire support are so very poor. Mlle. Ilma di Murska has certainly a brilliant voice and marvellous execution, but is not a singer who appeals to the feelings, nor does one care to hear her many times. Tamberlik may have been a fine singer twenty-five years ago, but at present he is not much superior to Mario, the prince of broken-down tenors. In fact, the combination of Mme. Rudersdorff and Tamberlik, occasioned by the illness of Mme. Lucca, is something unprecedented, and forcibly suggests the idea of the "music of bygone days." It is most unfortunate that the only redeeming artist in the troupe has been unable to appear very often during this season; but the poorness of this troupe will prepare us all the better to enjoy Strakosch's troupe, which will appear at this theatre during February.