CHAP. XXVIII.] EXPEDITIONS UNDER PEDRARIAS J 1515. 259 rived with the thirty men who had remained with him at Tutibra. Their arrival was hailed with joy by their com rades, who had given them up for lost. Encouraged by this unexpected reinforcement, the Spaniards now attacked by surprise the main body of confederate Indians, who, be ing ignorant of the discovery of their plot and capture of their caciques, were awaiting the return of the latter in a state of negligent security. “ Pizarro led the van, and set upon the enemy at day break with the old Spanish war-cry of Santiago! It was a slaughter rather than a battle, for the Indians were un prepared for resistance. Before sun-rise, seven hundred lay dead upon the field. Returning from the massacre, the commanders doomed the caciques who were in chains to he torn in pieces by the bloodhounds; nor was even Chiruca spared from this sanguinary sentence. Notwithstanding this bloody revenge, the vindictive spirit of the comman ders was still unappeased, and they set off to surprise the village of a cacique named Biru, who dwelt on the eastern side of the gulf of St. Michael. He was famed for valour and for cruelty: his dwelling was surrounded by the wea pons and other trophies of those whom he had vanquished ; and he was said never to give quarter. “ The Spaniards assailed his village before day-break with fire and sword, and made dreadful havoc. Biru es caped from his burning habitation, rallied his people, kept up a galling fight throughout the greater part of that day, and handled the Spaniards so roughly, that, when he drew off at night, they did not venture to pursue him, but re turned right gladly from his territory. According to some of the Spanish writers, the kingdom of Peru derived its name from this warlike cacique, through a blunder of the early discoverers; the assertion, however, is believed to be erroneous.