(Ἠρίδανος), a river god, a son of Oceanus and Tethys, and father of Zeuxippe. (Hesiod. Theog. 338; Hyg. Fab. 14.) He is called the king of rivers, and on its banks amber was found. (Verg. G. 1.482; Ov. Met. 2.324.) In Homer the name does not occur, and the first writer who mentions it is Hesiod. Herodotus (3.15) declares the name to be barbarous, and the invention of some poet. (Comp. Strab. v. p.215.) The position which the ancient poets assign to the river Eridanus differed at different times.