Hyginus (1st century BC), in his list of offspring of Typhon (all by Echidna), retains from the above: Cerberus, the Chimera, the Sphinx, the Hydra and Ladon, and adds "Gorgon" (by which Hyginus means the mother of Medusa, whereas Hesiod's three Gorgons, of which Medusa was one, were the daughters of Ceto and Phorcys), the Colchian dragon that guarded the Golden Fleece and Scylla. The Harpies, in Hesiod the daughters of Thaumas and the Oceanid Electra, in one source, are said to be the daughters of Typhon.