(), the divinity of the river Cephissus, is
described as a son of Pontus and Thalassa, and the father of Diogeneia and Narcissus, who is
therefore called (Cephisius. (Hygin. Fab. Praef.; Apollod. 3.5.1; Ov. Met. 3.343,
&c.) He had an altar in common with Pan, the Nymphs, and Achelous, in the temple of
Amphiaraus near Oropus. (Paus. 1.34. 2.)