Strabo Geography 13.1.70

[70] However, let us dismiss these; and let us, taking that which is more obvious, say that, according to Homer, Eurypylus clearly reigned in the region of the Caïcus, so that perhaps a part of the Cilicians were subject to him, in which case there were three dynasties among them and not merely two. ¹ This statement is supported by the fact that there is to be seen in the territory of Elaea a torrential stream called the Ceteius; this empties into another like it, and this again into another, and they all end in the Caïcus. But the Caïcus does not flow from Ida, as Bacchylides ² states; neither is Euripides correct in saying that Marsyas ³ for Celaenae is very far from Ida, and the sources of the Caïcus are also very far, for they are to be seen in a plain. Temnus is a mountain which forms the boundary between this plain and the Plain of Apia, as it is called, which lies in the interior above the Plain of Thebe. From Temnus flows a river called Mysius, which empties into the Caïcus below its sources; and it was from this fact, as some interpret the passage, that Aeschylus said at the opening of the prologue to the Myrmidons, ⁴ Near the sources is a village called Gergitha, to which Attalus transferred the Gergithians of the Troad when he had destroyed their place.

[70] Let us dismiss this doubtful matter, and turn to what is more certain; for instance, according to Homer, Eurypylus appears to have been king of the places about the Caïcus, so that perhaps a part of the Cilicians were his subjects, and that there were not only two but three dynasties among that people.

This opinion is supported by the circumstance that in the Elaïtis there is a small river, like a winter torrent, of the name of Ceteium. This falls into another like it, then again into another, but all discharge themselves into the Caïcus. The Caïcus does not flow from Ida, as Bacchylides says, nor does Euripides say correctly that Marsyas for Celaenae is at a great distance from Ida, and so are the sources of the Caïcus, for they are to be seen in the plain.

There is a mountain, Temnum, which separates this and the plain of Asia; it lies in the interior above the plain of Thebe. A river, Mysius, flows from Temnum and enters the Caïcus below its source. Hence some persons suppose that Aeschylus refers to it in the beginning of the prologue to the play of the Myrmidons, Near its source is a village called Gergitha, to which Attalus transferred the inhabitants of Gergitha in the Troad, after destroying their own stronghold.