The son of Zeus and Niobé, and third king of Argos.
Called Panoptes, “allseeing,” as having a hundred eyes. He was the son
of Agenor, or Arestor, or Inachus. Heré appointed him guardian of the cow into
which Io had been metamorphosed; but Hermes, at the command of Zeus, sent him to sleep by the
sweet notes of his lute, and then cut off his head. Heré transplanted his eyes to
the tail of the peacock, her favourite bird. See Io
The builder of the Argo, son of Phrixus (Apoll. Rhod. i. 112