in Greek myth: the offspring of "Ceto, joined in love with Phorcys" (Hesiod, Theogony 333) or of Typhon, who was himself serpent-like from the waist down, and Echidna (Bibliotheke 2.113; Hyginus, Preface to Fabulae) or of Gaia herself, or in her Olympian manifestation, Hera: "The Dragon which guarded the golden apples was the brother of the Nemean lion" asserted Ptolemy Hephaestion (recorded in his New History V, lost but epitomized in Photius, Myriobiblion 190). Lernaean Hydra The Lernaean Hydra was a dragon-like water serpent with fatally venomous breath, blood and fangs, a daughter of Typhon and Echidna. The creature was said to have anywhere between five and 100 heads, although most sources put the number somewhere between seven and nine. For each head cut off, one or two more grew back in its place. It had an immortal head which would remain alive after it was cut off. Some accounts claim that the immortal head was made of gold. It lived in a swamp near Lerna and frequently terrorized the townsfolk until it was slain by Heracles, who cut the heads off, with the help of his nephew Iolaus, who then singed the oozing stump with a blazing firebrand to prevent any new heads from growing, as the second of his Twelve Labors. Hera sent a giant crab to distract Heracles, but he simply crushed it under his foot. Hera then placed it in the heavens as the constellation Cancer. After slaying the serpent, Heracles buried the immortal head under a rock and dipped his arrows in the creature's blood to make them fatal to his enemies. In one version, the poisoned arrows would eventually prove to be the undoing of his centaur tutor Chiron, who was placed in the heavens as the constellation Centaurus. In another version, he would never be able to use these arrows because of his fear of the poison spreading through the land and poisoning the water and crops. Pytho or Python and Delphyne In Greek mythology Python was the earth-dragon of Delphi, always represented in the vase-paintings and by sculptors as a serpent. Various myths represented Python as being either male or female (a drakaina). Python was the chthonic enemy of Apollo, who slew it and remade its former home his own oracle, the most famous in Greece. In some myths the dragon was called Delphyne. Delphyne was often pictured as being half girl