The epithet which Moses gives to Asdahag, Biurasp, is also of Iranian origin; Baevaraçpa means the lord of 10,000 horses. That the descendants of Astyages are spoken of in the national legend of Armenia as the descendants of the dragon, shows that the Armenians had confounded Astyages of Media with Azhi dahaka or Zohak. The Armenians can only claim as their own the legend of King Tigran, who overcomes and slays Asdahag of Media. They ascribe to their princes the overthrow of the Medes. As already remarked, the Armenian legend of Tigran must come down from an early date. Xenophon makes Tigran the son of the king of Armenia, the most faithful helper and associate of Cyrus.[540] Leaving out of sight the romance of Xenophon, and the Armenian tradition, which involve special hypotheses, the accounts in the West of the fall of Astyages go back to two distinct versions, one of which we have in the narrative of Herodotus, the other in the narrative of Ctesias-Nicolaus, which is presupposed in Deinon and Polyaenus. In Trogus we have a third version, which combines the two. So far as Justin's excerpt allows us to form an opinion, this version, and the fragments of Diodorus, are based upon the Persian history of Deinon. The introduction is distinguished from the account of Herodotus by the fact that only one dream of Astyages is mentioned; that Cyrus is already exposed, and a dog is suckling him before the herdsman's wife, whose name was "dog," brings him up; then follows the story of Herodotus, including the letter, which Harpagus sends to Cyrus in the hare's belly. At this point Trogus passes into the account of Nicolaus; he represents Cyrus as receiving in a dream the exhortation to rise against Astyages, and to take the first man he meets as his associate. Cyrus meets Oebares, though not, it is true, on the borders of the Cadusians. The place of the horsemen, who in Nicolaus are first sent by Astyages, is taken in Trogus by the march of Harpagus, and his desertion to Cyrus; then follows the narrative of the war, which in the most essential traits agrees with the version of Ctesias-Nicolaus. From Deinon's fragments we shall add to the excerpt from Trogus, that Cyrus before his rebellion had served at the court of Astyages as overseer of the staff-bearers, and then of the body-guard; that Astyages was warned by Angares; and, finally, the defection of the Medes after the battle of Pasargadae, as given in the fragments of Diodorus.