was appointed to the government of Commagene in the reign of Tiberius, A. D. 18, having been previously praetor. He was a friend of Germanicus, and after the death of the latter was one of the accusers of Cn. Piso, in A. D. 20 [Piso, No. 23.] He was involved in the fall of Sejanus, was accused and condemned, but saved himself by turning informer, A. D. 32. (Tac. Ann. 2.56, 3.13, 6.7.)