This country was formerly inhabited by Perrhæbi, who [CAS. 439] possessed the part towards the sea and the Peneius, as far as[528] its mouth and the city Gyrton, belonging to the district Perrhæbis. Afterwards the Lapithæ, Ixion and his son Peirithous, having reduced the Perrhæbi,[529] got possession of these places. Peirithous took possession also of Pelion, having expelled by force the Centaurs, a savage tribe, who inhabited it. These “he drove from Pelion to the neighbourhood of the Æthices,”[530] but he delivered up the plains to the Lapithæ. The Perrhæbi kept possession of some of these parts, those, namely, towards Olympus, and in some places they lived intermixed altogether with the Lapithæ. Argissa, the present Argura, is situated upon the banks of the Peneius. Atrax lies above it at the distance of 40 stadia, close to the river. The intermediate country along the side of the river was occupied by Perrhæbi. Some call Orthe the citadel of the Phalannæi. Phalanna is a Perrhæbic city on the Peneius, near Tempe. The Perrhæbi, oppressed by the Lapithæ, retreated in great numbers to the mountainous country about Pindus, and to the Athamanes and Dolopes; but the Larisæi became masters of the country and of the Perrhæbi who remained there. The Larisæi lived near the Peneius, but in the neighbourhood of the Perrhæbi. They occupied the most fertile portion of the plains, except some of the very deep valleys near the lake Nessonis, into which the river, when it overflowed, usually carried away a portion of the arable ground belonging to the Larisæi, who afterwards remedied this by making embankments. These people were in possession of Perrhæbia, and levied imposts until Philip became master of the country.