The two brothers agreed to reign together, and prepared for war with Antiochus. He captured Cyprus, invaded Egypt a second time, and would doubtless have added the entire dominion of the Ptolemies to his own, if the Romans, who claimed the protectorate of Egypt, had not again interfered and commanded him to withdraw. The Syrian king reluctantly obeyed, and the brothers reigned four years in peace. They then quarreled, and Philometor went to plead his cause before the Roman Senate. The Romans re-instated him in the possession of Egypt, giving to his brother Physcon Libya and the Cyrenaica. Dissatisfied with his portion, Physcon went to Rome and obtained a further grant of Cyprus; but Philometor refused to give it up, and the brothers were preparing for war, when a revolt in Cyrene engaged the attention of its king. After nine years he renewed his claim, and obtained from Rome a small squadron to aid in the capture of the island. He was defeated and made prisoner by his brother; but his life was spared, and he was restored to his kingdom of Cyrene. Philometor fell, B. C. 146, in a battle near Antioch, with Alexander Balas, whom he had himself encouraged to assume the crown of Syria. (See § 42.) =60.= Ptolemy VII. (Eupator) had reigned but a few days when he was murdered by his uncle, Ptolemy Physcon, who, aided by the Romans, united in himself the two kingdoms, Egypt and Cyrene. This monster created such terror by his inhuman cruelties, and such disgust by his excesses, that his capital became half depopulated, and the citizens who remained were almost constantly in revolt. At last he was forced to take refuge in Cyprus, the crown remaining to his sister, Cleopatra. To wound the queen most deeply, he murdered her son, and sent her the head and hands of the victim. The Alexandrians were so enraged by this atrocity, that they fought bravely for Cleopatra; but when she applied for aid to the king of Syria, they became alarmed and recalled Physcon, after an exile of three years. Warned by his punishment, Physcon now desisted from his cruelties, and devoted himself to literary pursuits, even gaining some reputation as an author. =61.= Ptolemy VIII. (Lath´yrus) succeeded his father in Egypt, while his brother Alexander reigned in Cyprus, and A´pion, another son of Physcon, received the Cyrenaica. Cleopatra, the queen mother, had the real power. After ten years, Lathyrus offended his mother by pursuing a policy of his own, and was compelled to change places with Alexander, who reigned eighteen years in Egypt, with the title of Ptolemy IX. Cleopatra was then put to death, Alexander expelled, and Ptolemy Lathyrus recalled. He reigned eight years as sole monarch, defeated Alexander, who attempted to regain Cyprus, and punished a revolt in Thebes by a siege of three years, ending with the destruction of the city, B. C. 89-86.