The god of the river Simois, which flows from mount Ida, and in the plain of Troy joins the Xanthus or Scamander (Hom. Il. 774, xii. 22; Virg. Aen. v. 261). He is described as a son of Oceanus and Tethys (Hes. Theog. 342), and as the father of Astyoche and Hieromneme. (Apollod. iii. 12. § 2.)