Belesis

or Be'lesys (Βέλεσις, Βέλεσυς), the noblest of the Chaidaean priests at Babylon, who, according to the account of Ctesias, is said, in conjunction with Arbaces, the Mede, to have overthrown the old Assyrian empire. [Arbaces.] Beiesis afterwards received the satrapy of Babylon from Arbaces. (Diod. 2.24, &100.28.)