Expositio totius mundi et gentium ("A description of the world and its people") is a brief "commercial-geographical"[1] survey written by an anonymous citizen of the Roman Empire living during the reign of Constantius II. The Greek original, composed between AD 350 and 362,[2] is now lost. The text comes to us through two Latin translations made during the sixth century.
The work is composed of three parts. The first (§ 1-21) describes lands east of the Roman Empire and contains the most legendary and least accurate geographical information.[3] The second part (§ 22–62), the longest, describes the mainland provinces of the Empire,[4] while the third (§ 63–68) describes island provinces.[5]