STYLLA´NGIUM(Στυλλάγγιον, Plb. 4.77, 80; Στυλλάγιον, Steph. B. s. v.: Eth. Στυλλάγιος, Στυλλαγιεύς), a town of Triphylia in Elis of uncertain site, which surrendered to Philip in the Social War.