now *La Piazza Navona*, a long, wide, and beautiful street in the centre of Rome, adorned with fountains, and with the obelisk of Caracalla. The reason of the name *Agonalis* is either unknown or doubtful. Ovid derives it from the *agones*, or solemn games, there celebrated, supposed to have been the *Ludi Apollinares*, or *Actaei*, instituted by Augustus; whence the circus was called *Apollinaris*; also *Alexandrinus*, from the emperor Alexander Severus, who either inclosed or repaired it.