MYTHOLOGY
Exist an old legend that connects the cup with the near constellations of the crow and the idra. A day, Apollo sent a crow to take some water, with a cup in the spout, but it stopped for road to eat figs; it excused then of the delay asserting that the guilt was of a snake met for road, but Apollo, being equipped of the onniscienza, understood the lie and exiled the crow of this history in sky.