Oedipus the total absence of ancient descriptions or résumés – though it has been suggested that a part of Hyginus' narration of the Oedipus myth might in fact derive from Euripides' play. Some echoes of the Euripidean Oedipus have been traced also in a scene of Seneca's Oedipus (see below), in which Oedipus himself describes to Jocasta his adventure with the Sphinx. At least three other 5th century BC authors who were younger than Sophocles wrote plays about Oedipus. These include Achaeus of Eretria, Nichomachus and the elder Xenocles. The "Bibliotheca", a Roman-era mythological handbook, includes a riddle for the Sphinx,
Oedipus Rex mother, and shed/With [his] own hands the blood of [his] own sire"". Desperate to avoid this terrible fate, Oedipus, who still believes that Polybus and Merope are his true parents, leaves Corinth for the city of Thebes. On the road to Thebes, Oedipus encounters Laius and his retainers, and the two quarrel over whose chariot has the right of way. The Theban king moves to strike the insolent youth with his sceptre, but Oedipus, unaware that Laius is his true father, throws the old man down from his chariot, killing him. Thus, Laius is slain by his own son, and