16. An unlucky prodigy occurred to Gracchus, while sacrificing, previous to his departure from Lucania. Two snakes gliding from a secret place to the entrails, after the sacrifice was completed, ate the liver; and after having been observed, suddenly vanished out of sight. The sacrifice having been repeated according to the admonition of the aruspices, and the vessel containing the entrails being watched with increased attention, it is reported that the snakes came a second, and a third time, and, after tasting the liver, went away untouched. Though the aruspices forewarned him that the portent had reference to the general, and that he ought to be on his guard against secret enemies and machinations, yet no foresight could avert the destiny which awaited him. There was a Lucanian, named Flavius, the leader of that party which adhered to the Romans when the others went over to Hannibal; he was this year in the magistracy, having been created praetor by the same party. Suddenly changing his mind, and seeking to ingratiate himself with the Carthaginians, he did not think it enough that he himself should pass over to them, or that he should induce the Lucanians to revolt with him, unless he ratified his league with the enemy with the head and blood of the general, betrayed to them, though his guest. He entered into a secret conference with Mago, who had the command in Bruttium, and receiving a solemn promise from him, that he would take the Lucanians into his friendship, without interfering with their laws, if he should betray the Roman general to the Carthaginians, he conducted Mago to a place to which he was about to bring Gracchus with a few attendants. He then directed Mago to arm his infantry and cavalry, and to occupy the retired places