VIII, 13.--Winter came on and Manlius sailed back to Rome with the booty, whereas Regulus remained behind in Libya. The Carthaginians found themselves in the depths of woe, since their country was being pillaged and their vassals alienated; but cooped up in their fortifications they remained inactive. [Sidenote: (FRAG. 43^18?)] WHILE REGULUS WAS BESIDE THE BAGRADAS RIVER A SERPENT OF HUGE BULK APPEARED TO HIM, THE LENGTH OF WHICH IS SAID TO HAVE BEEN ONE HUNDRED AND TWENTY FEET. ITS SLOUGH WAS CARRIED TO ROME FOR EXHIBITION PURPOSES. AND THE REST OF ITS BODY CORRESPONDED IN SIZE. It destroyed many of the soldiers that approached it and some also who were drinking from the river. Regulus overcame it by a crowd of soldiers and hurling-engines. After thus destroying it he gave battle by night to Hamilcar, who was encamped upon a high, woody spot; and he slew many in their beds as well as many who had just risen. Any who escaped fell in with Romans guarding the roads, who despatched them. In this way a large division of Carthaginians was blotted out and numerous cities went over to the Romans. [Sidenote: FRAG. 43^19] THOSE IN THE TOWN BEING IN FEAR OF CAPTURE SENT HERALDS TO THE CONSUL TO THE END THAT HAVING BY SOME SATISFACTORY ARRANGEMENT INDUCED HIM TO GO AWAY THEY MIGHT AVOID THE DANGER OF THE MOMENT AND SO ESCAPE. BUT WHEN MANY UNREASONABLE DEMANDS WERE MADE OF THEM, THEY DECIDED THAT THE TRUCE WOULD MEAN THEIR UTTER SUBJUGATION AND PREPARED RATHER TO FIGHT. [Sidenote: B.C. 255 (_a.u._ 499)] Regulus, however, who up to that time was fortunate, became filled with boastfulness and conceit, so much so that he even wrote to Rome that he had sealed up the gates of Carthage with fear. His followers and the people of Rome thought the same way, and this caused their undoing. Allies of various sorts came to the Carthaginians, among them Xanthippus from Sparta. He assumed the general superintendence of the Carthaginians, for the populace was eager to entrust matters to his charge and Hamilcar together with the other officials stepped aside voluntarily. The new leader, then, disposed things excellently in every way, and particularly he brought the Carthaginians down from the heights, where they were staying through fear, into the level country, where their horses and elephants were sure to develop greatest power. For some time he remained inactive until at length he found the Romans encamped in a way that betokened their contempt. They were very haughty over their victorious progress and looked down upon Xanthippus as a "Graecus" (this is a name they give to Hellenes and they use this epithet as a reproach to them for their mean birth); [Sidenote: B.C. 255 (_a.u._ 499)] consequently they had constructed their camp in a heedless fashion. While the Romans were in this situation, Xanthippus assailed them, routed their cavalry with his elephants, cut down many and captured many alive, among them Regulus himself. This put the Carthaginians in high spirits.