Strabo Geography 8.4.6

[6] It is near Corone, at about the center of the gulf, that the river Pamisus empties. The river has on its right Corone and the cities that come in order after it (of these latter the farthermost towards the west are Pylus and Cyparissia, and between these is Erana, which some have wrongly thought to be the Arene of earlier time), ¹ and it has Thuria and Pharae on its left. It is the largest of the rivers inside the Isthmus, although it is no more than a hundred stadia in length from its sources, from which it flows with an abundance of water through the Messenian plain, that is, through Macaria, as it is called. The river stands at a distance of fifty ² stadia from the present city of the Messenians. There is also another Pamisus, a small torrential stream, which flows near the Laconian Leuctrum; and it was over Leuctrum that the Messenians got into a dispute with the Lacedaemonians in the time of Philip. Of the Pamisus which some called the Amathus I have already spoken. ³

[6] Near Corone, about the middle of the gulf, the river Pamisus ¹ discharges itself, having, on the right hand, this city, and the rest in succession, the last of which, towards the west, are Pylus and Cyparissia, and between these is Erana, which some writers erroneously suppose to be the ancient Arene; on the left hand it has Thyria and Pherae. It is the largest (in width) of the rivers within the isthmus, although its course from its springs does not exceed 100 stadia in length; it has an abundant supply of water, and traverses the Messenian plain, and the district called Macaria. ² It is distant from the present city of the Messenians 50 stadia. ³ There is also another Pamisus, a small torrent stream, running near Leuctrum of Laconia, which was a subject of dispute between the Messenians and Lacedaemonians in the time of Philip.

I have before said that some persons called the Pamisus, Amathus. ⁴