4. Surnamed CYBIOSACTES (Κυβιοσάκτης, the packer of salt fish), a name given him in derision by the Alexandrians, was in reality a man of ignoble birth and a low condition, but who pretended to he descended from the royal race of the Seleucidae. On this account he was chosen by the Alexandrians in B. C. 58, when they had expelled their king Ptolemy Auletes, and established his daughter Berenice on the throne, to be the husband of their young queen. He was accordingly sent for from Syria, and the marriage actually solemnized; but Berenice was so disgusted with his mean and sordid character, that she caused him to be strangled only a few days after their nuptials (D. C. 39.57; Strab. xvii. p.796; Suet. Vesp. 19). Vaillant (Hist. Reg. Syr. p. 397) and Froelich suppose him to have been a younger brother of Antiochus Asiaticus, and the same who accompanied him to Rome about B. C. 73 (see Cic. Ver. 4.27); but both Dio Cassius and Strabo clearly imply that he was a mere pretender. But, from his being selected by the Alexandrians, it is not improbable that be claimed to be a son of Antiochus X. and Cleopatra Selene, which would give him an apparent connection with the royal family of Egypt also.