DIONYSIUS PERIEGETES, author of a IlFpciPyrlelLs oucovilivns, a description of the habitable world in Greek hexa meters. There is some reason for believing that the author was an Alexandrian, who wrote in the time of Hadrian (some put him as late as the end of the 3rd century). The work was popular in ancient times as a school-book; it was translated into Latin by Rufus Festus Avienus, and by the grammarian Priscian. The commentary of Eustathius is valuable.