Gustave Aimard,
Last of the Incas: A Romance of the Pampas
“ Panchito and Corrocho, who had already taken off their hats, and bowed with affected politeness to each other, after rolling their poncho round the left arm, in guise of a buckler, drew their long knives from their polenas, and without exchanging a syllable, stood on guard with remarkable coolness.In this species of duel the honour consists in touching the adversary in the face; a blow dealt below the waist passes for an act of treachery unworthy a true caballero. ”
