Hypanis, A riuer in Scithïa. Vitruuius sayth, li. 8. cap, 3. it is in Pontus. M. Tull. Tusc. quest. lib. sayth, that Hyppanis from a part of Europe tunneth into Pontus.
Lewis and Short: Latin dictionary
Hpănis, is, m., = *(/upanis. I.A river of European Sarmatia, now the Boug, Mel. 2, 1, 6; Plin. 4, 12, 26, 83; 11, 36, 43, 120; Cic. Tusc. 1, 39, 94; Verg. G. 4, 370; Ov. M. 15, 285.—II.A Trojan, Verg. A. 2, 340.