The romantic tale of the beautiful princess Andromeda, and how Perseus freed her from the dragon, has been treated by two of the great tragedians, Sophocles and Euripides. Here, if anywhere, Sophocles is thrown into the shade by his rival, so much so that the most important elements of Sophocles' version have been given to the drama of Euripides. Therefore if we wish to restore to Sophocles what justly belongs to him, we must first define as clearly as possible what belongs to Euripides. For although a great deal has been written about this brilliant achievement of Euripides, yet conclusions that seemed settled are constantly being called in question or denied, while questionable or erroneous views are once more put forward as correct. Only after the genuine remains of Euripides' play have been separated out can we hope to form any conception of the Andromeda of Sophocles, or to give any reasoned answer to the question which is the earlier, Euripides' play, which was performed with the Helena in 412 B.C., or Sophocles' play, the date of the first performance of which has not come down to us. The poetry of Euripides was Latinised by Ennius, but the fragments of the Latin tragedy do not give substantial help towards the reconstruction of the Greek one.