In the five hundred and thirty-eighth year of the era of Seleucus. Agathias, 1. ii. p. 63. This great event (such is the carelessness of the Orientals) is placed by Eutychius as high as the tenth year of Commodus, and by Moses of Chorene as low as the reign of Philip. Ammianus Marcellinus has so servilely copied (xxiii. 6) his ancient materials, which are indeed very good, that he describes the family of the Arsacides as still seated on the Persian throne in the middle of the fourth century.