The arts of this new Zopyrus (Greg. Nazianzen, Orat. iv. p. 115, 116 [ed. Par. 1609]) may derive some credit from the testimony of two abbreviators (Sextus Rufus and Victor), and the casual hints of Libanius (Orat. Parent. c. 134, p. 357) and Ammianus (xxiv. 7). The course of genuine history is interrupted by a most unseasonable chasm in the text of Ammianus.