In respect to Parthenopæus, called by Euripidês and by so many others the son of Atalanta, it is of some importance to add, that Apollodôrus, Aristarchus, and Antimachus, the author of the Thebaid, assigned to him a pedigree entirely different,—making him an Argeian, the son of Talaos and Lysimachê, and brother of Adrastus. (Apollodôr. i. 9, 13; Aristarch. ap. Schol. Soph. Œd. Col. 1320; Antimachus ap. Schol. Æschyl. Sep. Theb. 532; and Schol. Supplem. ad Eurip. Phœniss. t. viii. p. 461, ed. Matth. Apollodôrus is in fact inconsistent with himself in another passage).
We have yet another female in the family of Œneus, whose name the legend has immortalized. His daughter Deianeira was sought in marriage by the river Achelôus, who presented himself in various shapes, first as a serpent and afterwards as a bull. From the importunity of this hateful suitor she was rescued by the arrival of Hêraklês, who encountered Achelôus, vanquished him and broke off one of his horns, which Achelôus ransomed by surrendering to him the horn of Amaltheia, endued with the miraculous property of supplying the possessor with abundance of any food or drink which he desired. Hêraklês was rewarded for his prowess by the possession of Deianeira, and he made over the horn of Amaltheia as his marriage-present to Œneus.[352] Compelled to leave the residence of Œneus in consequence of having in a fit of anger struck the youthful attendant Eunomus, and involuntarily killed him,[353] Hêraklês retired to Trachin, crossing the river Euênus at the place where the Centaur Nessus was accustomed to carry over passengers for hire. Nessus carried over Deianeira, but when he had arrived on the other side, began to treat her with rudeness, upon which Hêraklês slew him with an arrow tinged by the poison of the Lernæan hydra. The dying Centaur advised Deianeira to preserve the poisoned blood which flowed from his wound, telling her that it would operate as a philtre to regain for her the affections of Hêraklês, in case she should ever be threatened by a rival. Some time afterwards the hero saw and loved the beautiful Iolê, daughter of Eurytos, king of Œchalia: he stormed the town, killed Eurytos, and made Iolê his captive. The misguided Deianeira now had recourse to her supposed philtre: she sent as a present to Hêraklês a splendid tunic, imbued secretly with the poisoned blood of the Centaur. Hêraklês adorned himself with the tunic on the occasion of offering a solemn sacrifice to Zeus on the promontory of Kênæon in Eubœa: but the fatal garment, when once put on, clung to him indissolubly, burnt his skin and flesh, and occasioned an agony of pain from which he was only relieved by death. Deianeira slew herself in despair at this disastrous catastrophe.[354]