Bathynias
Βαθύνιας
Bathynias (Βαθύνιας), a river in Thrace, emptying itself into the Propontis not far from Byzantium. (Plin. Nat. 4.18; Ptol. 3.11.6.) This river is probably the same as the one called Bathyrsus by Theophanes (vol. v. p. 340, ed. Bonn), and Bithyas by Appian (App. Mith. 1).
From William Smith (ed.), Dictionary of Greek and Roman Geography. Text provided under a CC BY-SA license by Perseus Digital Library, http://www.perseus.tufts.edu, with funding from the National Endowment for the Humanities and Tufts University. Data accessed from https://github.com/PerseusDL/canonical-pdlrefwk/ on 17 October 2026.