At last Pan, the old god of Arcadia, discovered her hiding-place, and informed Zeus, who sent the Moirae (Fates) to fetch her out.
In 366 Athens lost Oropus, a blow which she endeavoured to repair by forming an alliance with Arcadia and by an attack on Corinth.
For several centuries Tegea served as a bulwark of Arcadia against the expanding power of Sparta; though ultimately subdued about 550 B.C. it was allowed to retain its independence and its Arcadian nationality.
Pausanias, however (following Sosibius), interprets a long series of conflicts in Arcadia as stages in a gradual advance southward, ending with the conquest of Amyclae by King Teleclus (c. 800 B.C.) and of Helos by King Alcamenes (c. 770 B.C.).
Arcadia, on the other hand, in the heart of Peloponnese, retained till a late date a quite different dialect, akin to the ancient dialect of Cyprus, and more remotely to Aeolic. This distribution makes it clear (r) that the Doric dialects of Peloponnese represent a superstratum, more recent than the speech of Arcadia; (2) that Laconia and its colonies preserve features alike, -n and -w which are common to southern Doric and Aeolic; (3) that those parts of " Dorian " Greece in which tradition makes the pre-Dorian population " Ionic," and in which the political structure shows that the conquered were less completely subjugated, exhibit the Ionic -a and -ov; (4) that as we go north, similar though more barbaric dialects extend far up the western side of central-northern Greece, and survive also locally in the highlands of south Thessaly; (5) that east of the watershed Aeolic has prevailed over the area which has legends of a Boeotian and Thessalian migration, and replaces Doric in the northern Doris.