SIDE´NI(Σιδηνοί), a people of Arabia Felix, placed by Ptolemy between the Thamyditae on the north, and the Darrae on the south, on the Elanitic gulf (6.7.4). Mr. Forster identifies them with the Djeheynetribe of Burckhardt, in the north of the Hedjaz, extending along the coast from Jebel Hassane(certainly identical with the Hippos Mons—both meaning Horse-mountain—of Ptolemy), to Yembo. All the circumstances, of name, locality, and neighbourhood,he says, concur to prove their identity.(Arabia, vol. 1. p. 126.)
[G.W]