Ætolians are continuous with the Locri Hesperii, and the Ænianes, who occupy Œta with the Epicnemidii, and between them Dorians. These last are the people who inhabited the Tetrapolis, which is called the capital of all the Dorians. They possessed the cities Erineus, Bœum, Pindus, Cytinium. Pindus is situated above Erineus. A river of the same name flows beside it, and empties itself into the Cephissus, not far from Lilæa. Some writers call Pindus, Acyphas.
Ægimius, king of these Dorians, when an exile from his kingdom, was restored, as they relate, by Hercules. He requited this favour after the death of Hercules at Œta by adopting Hyllus, the eldest of the sons of Hercules, and both he and his descendants succeeded him in the kingdom. It was from this place that the Heracleidæ set out on their return to Peloponnesus.