There are four concentric rings in this ninth circle, increasing in pain as they diminish in circumference. In Caina (_Inf._ xxxii. 58), the treacherous murderers of their kindred are chattering with their teeth like storks. In Antenora (88), traitors to country or party are still more deeply frozen into the ice. Bocca degli Abati, who betrayed the Guelfs to the Ghibellines at Montaperti, is side by side with Buoso da Duera, who, five years later, betrayed the Ghibellines to the lieutenant of Charles of Anjou. Frozen into one hole, Count Ugolino della Gherardesca is gnawing the head of Archbishop Ruggieri of Pisa; and the terror and pity of Dante’s lines have made the tale of the dying agonies of the old noble and his children perhaps the most famous episode in the _Commedia_. The terrible imprecation against Pisa adapts Lucan’s curse upon Egypt after the murder of Pompey to the different geographical conditions of the Tuscan city.[33] In Tolomea (_Inf._ xxxiii. 124), those who slew treacherously, under mask of hospitality, have only their faces showing above the ice, their tears frozen into a crystalline mask; on earth their bodies ofttimes still seem to live, tenanted by a demon until their time is full, while the soul has already gone down into the ice. In Giudecca (xxxiv. 117) are souls of traitors to their lords and benefactors: “Already I was there (and with fear I put it into verse) where the souls were all covered, and shone through like straw in glass. Some are lying; some stand upright, this on its head, and that upon its soles; another, like a bow, bends face to feet” (_Inf._ xxxiv. 10-15); silent and immovable, in agonised and everlasting adoration in the court of the Emperor of the dolorious kingdom, who, gigantic and hideous, “from mid-breast stood forth out of the ice.” The most radiant of God’s Angels has become the source of evil, the symbol of sin’s hideousness. His three faces, red, yellow-white, black, are an infernal parody of the Power, Wisdom, Love of the Blessed Trinity. Under each face are two huge bat-like wings, whose helpless flappings freeze all the lake of Cocytus. Tormented by his teeth and claws are the three arch-traitors: Judas Iscariot, who betrayed the Divine Founder of the Church; Brutus and Cassius, who murdered the imperial founder of the Empire. The condemnation of the two latter is an instance of how, while accepting the testimony of his sources as to facts, Dante preserves independence of judgment concerning their moral value; in Lucan’s _Pharsalia_, Brutus and Cassius are the destined avengers of right, the champions of Roman liberty, Brutus bearing the character with which we are familiar in Shakespeare.