3. Near the exit, properly in the catacomb of Sta. Lucina, connected with that of Calixtus by a labyrinth of galleries, is the tomb of Pope St. Cornelius (251, 252) the only Roman bishop down to the time of St. Sylvester (314) who bore the name of any noble Roman family, and whose epitaph, (perhaps in consequence) is in Latin, while those of the other popes are in Greek. The tomb has no chapel of its own, but is a mere grave in a gallery, with a rectangular instead of a circular space above, as in the cubicula. Near the tomb are fragments of one of the commemorative inscriptions of St. Damasus, which has been ingeniously restored by De Rossi thus:-- "Aspice, descensu extructo tenebrisque fugatis Corneli monumenta vides tumulumque sacratum Hoc opus ægroti Damasi præstantia fecit, Esset ut accessus melior, populisque paratum Auxilium sancti, et valeas si fundere puro Corde preces, Damasus melior consurgere posset, Quem non lucis amor, tenuit mage cura laboris." "Behold! a way down has been constructed, and the darkness dispelled; you see the monuments of Cornelius, and his sacred tomb. This work the zeal of Damasus has accomplished, sick as he is, in order that the approach might be better, and the aid of the saint might be made convenient for the people; and that, if you will pour forth your prayers from a pure heart, Damasus may rise up better in health, though it has not been love of life, but care for work, that has kept him (here below)."[211] St. Cornelius was banished under Gallus to Centumcellæ--now Civita Vecchia, and was brought back thence to Rome for martyrdom Sept. 14, A.D. 252. On the same day of the month, in 258, died his friend and correspondent St. Cyprian, archbishop of Carthage,[212] who is consequently commemorated by the Church on the same day with St. Cornelius. Therefore also, on the right of the grave, are two figures of bishops with inscriptions declaring them to be St. Cornelius and St. Cyprian. Each holds the book of the Gospels in his hands and is clothed in pontifical robes, "including the pallium, which had not yet been confined as a mark of distinction to metropolitans."[213] Beneath the picture stands a pillar which held one of the vases of oil which were always kept burning before the shrines of the martyr. Beyond the tomb, at the end of the gallery, is another painting of two bishops, St. Sistus II., martyred in the catacomb of Pretextatus, and St. Optatus who was buried near him. In going round this catacomb, and in most of the others, the visitor will be shown a number of rude paintings, which will be explained to him in various ways, according to the tendencies of his guide. The paintings may be considered to consist of three classes, symbolical; allegorical and biblical; and liturgical. There is little variety of subject,--the same are introduced over and over again. The symbols most frequently introduced on and over the graves are:--