The Erinys or Furiae also called Dirae, Eumenides, or Semnae - that is, the "revered" goddesses - were, in Greek mythology, daughters of Night, or, according to another myth, of the Earth and Darkness, while a third account calls them offspring of Cronus and Eurynome. They were attendants of Hades and Persephone, and lived at the entrance to the lower world. Their first duty was to see to the punishment of those of the departed who, having been guilty of some crime on earth, had come down to the shades without obtaining atonement from the gods. At the command of the higher gods, sometimes of Nemesis, they appeared on earth pursuing criminals. Nothing escaped their sharp eyes as they followed the evil-doer with speed and fury, permitting him no rest.