This chapter presents a new, annotated translation of the late 6th-century AD expansion and update of Arrian’s Euxine (Chapter 27 of this volume), probably by the same writer as the Hypotypōsis (Chapter 35). In the translation, the many passages deriving almost verbatim from Ps.-Skylax, the Nikomedean Periodos, Arrian, and Menippos are marked as such (following the practice of Diller). The introduction argues that the work merits closer attention than it has received, not least for what it tells us of population movements between the 2nd and 6th centuries. An appendix contains the late Anametresis of the Oikoumene or Perimetros of the Pontos. A new map, matching that for Arrian, includes place-names that had changed since Arrian’s time.