2. The dragon, who was believed to guard the apples of the Hesperides. He is said to have been able to assume various tones of voice, and to have been the offspring of Typhon and Echidna; but he is also called a son of Ge, or of Phorcys and Ceto. He had been appointed to watch in the gardens of the Hesperides by Juno, and never slept; but he was slain by Heracles; and the image of the fight was placed by Zeus among the stars. (Hes. Th. 333; Apollon. 4.1396; Serv. ad Aen. 4.484; Hygin. Poet. Astr. 2.6.)
[L.S]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890