(fab. hist.), a celebrated prophet, son of Manto and Apollo during the Trojan war. He was consulted by Amphimachus, king of Colophon, who wished to know what successe would attend his arms in a war which he was going to undertake. He predicted the greatest calamities; but Calchas, who had been a foot-slayer of the Greeks during the Trojan war, promised the greatest successees. Amphimachus followed the opinion of Calchas; but the prediction of Mopsus was fully verified. This had such an effect upon Calchas, that he died soon after. His death