ANTONIO (1429—1498)  distinguished himself as a sculptor, jeweller, painter and engraver, and did valuable service in perfecting the art of enamelling . His painting exhibits an excess x Iof brutality, of which the characteristics can be studied in the " Saint Sebastian," painted in 1475, and now in the National Gallery, London . A " St Christopher and the Infant Christ " is in the Metropolitan Museum, New York . But it was as a sculptor and metal-worker that he achieved his greatest successes . The exact ascription of his works is doubtful, as his brother Piero did much in collaboration with him . The museum of Florence contains the bronze group " Hercules strangling Cacus " and the terra-cotta bust " The Young Warrior "; and in the South Kensington Museum, London, is a bas-relief representing a contest. between naked men . In 1489 Antonio took up his residence in Rome, where he executed the tomb of Sixtus IV . (1493), a composition in which he again manifested the quality of exaggeration in the anatomical features of the figures . In 1496 he went to Florence in order to put the finishing touches to the work already begun in the sacristy of Santo Spirito . He died in 1498, having just finished his mausoleum of Innocent VIII., and was buried in the church of San Pietro in Vincula, where a monument was raised to him near that of his brother .