In Eins. Tiberis is mentioned twice (I. 6; 8. 10), between
the forum of Trajan and the arch of Severus; and most authorities are
inclined to recognise in it the famous statue of a river-god (Marforio),
now in the Museo Capitolino, which stood near the church of S. Martina
). See DAP 2. ix. 408 and references; Cap. 21.