Apollodorus Library 1.7.4

[4] Alcyone was married by Ceyx, son of Lucifer. ¹ These perished by reason of their pride; for he said that his wife was Hera, and she said that her husband was Zeus. ² But Zeus turned them into birds; her he made a kingfisher ( alcyon) and him a gannet ( ceyx). ³
  Canace had by Poseidon Hopleus and Nireus and Epopeus and Aloeus and Triops. Aloeus wedded Iphimedia, daughter of Triops; but she fell in love with Poseidon, and often going to the sea she would draw up the waves with her hands and pour them into her lap. Poseidon met her and begat two sons, Otus and Ephialtes, who are called the Aloads. ⁴ These grew every year a cubit in breadth and a fathom in height; and when they were nine years old, ⁵ being nine cubits broad and nine fathoms high, they resolved to fight against the gods, and they set Ossa on Olympus, and having set Pelion on Ossa they threatened by means of these mountains to ascend up to heaven, and they said that by filling up the sea with the mountains they would make it dry land, and the land they would make sea. And Ephialtes wooed Hera, and Otus wooed Artemis; moreover they put Ares in bonds. ⁶ However, Hermes rescued Ares by stealth, and Artemis killed the Aloads in Naxos by a ruse. For she changed herself into a deer and leaped between them, and in their eagerness to hit the quarry they threw their darts at each other. ⁷