_Cemetery of SS. Processus and Martinianus._--(Apostolic age.) Tradition relates that these saints were the gaolers of S. Peter, and owed their conversion to their prisoner. They suffered martyrdom shortly after S. Peter’s death, being decapitated on the Via Aurelia; Lucina, a wealthy Roman matron, buried them in her garden near the place of their martyrdom. This Lucina was probably the same who gave her name to the ancient cemetery on the Via Appia, and which now forms part of the great network of cemeteries known generally as S. Callistus’ Catacomb. Very little is known of this Catacomb. Among the network of sepulchral corridors on this portion of the Via Aurelia this special cemetery has not as yet been clearly identified. These cemeteries are in a sadly ruined condition. The loculi which have been examined are evidently of a very early period. Marucchi, in pleading for a more detailed exploration here, suggests the probability of some “Memories” of S. Peter being eventually discovered. _Cemetery of S. Calepodius._--This saint appears to have been a priest who suffered martyrdom, probably in a popular rising, in the reign of Alexander Severus (A.D. 222-35). This cemetery is principally famous as being the resting-place of Pope Callistus, who also suffered in a popular rising, A.D. 222, and was laid to rest in this cemetery, perhaps as being nearer to the scene of his martyrdom than the official Papal Crypt on the Via Appia to which he gave his name. The exploration work here, as far as it has gone, has been carried out with difficulty owing to the ruinous state of the corridors. _Cemetery of S. Pancratius._--S. Pancras was a boy-martyr twelve, or as some accounts give fourteen years of age when in A.D. 304 he suffered for his faith in the Diocletian persecution. This cemetery was in the first instance known under the name of Octavilla, a Christian matron who buried the young confessor in her garden on the Aurelian Way. It had probably been a cemetery before the deposition of the remains of the famous boy-martyr gave it a new name and not a little celebrity. The story of S. Pancras has ever been an attractive one, and a certain number of churches named in his honour are scattered over many lands. A small basilica was built over the crypt containing his grave. Pope Siricius (end of fourth century) restored and adorned it. Honorius I, A.D. 620, rebuilt it. In the present Church of S. Pancras there are scarcely any traces of the original basilica. The remains of the martyr have disappeared. Strange to say, in the great translation of the ashes of saints and martyrs by Pope Paul I and Paschal I, S. Pancras was left undisturbed in his tomb. The corridors, however, have been completely wrecked, and have been very partially explored. The site of the cemeteries mentioned in the Pilgrim Itineraries, named after two saints each bearing the name of Felix, has not been discovered. THE VIA PORTUENSIS