Other pagan types were employed, but with a new and nobler Christian significance. Thus the peacock, the proud bird of Juno, frequently appears in the Catacombs, not as the symbol of the all-seeing eye of God, in imitation of the pagan myth of the hundred eyes of Argus, but as the emblem of immortality.[376] Associated in meaning and frequently confounded in form with the peacock was the phoenix, the marvellous story of whose rejuvenescence from the ashes of its funeral pyre Clement of Rome recounts with unfaltering faith.[377] Lactantius makes it the theme of an elaborate poem,[378] and Tertullian cites it as a striking illustration of the resurrection of the dead.[379] It was also considered a type of the new birth and of eternal felicity. The cock, generally associated with St. Peter,[380] is interpreted as the symbol of unsleeping vigilance; it is, perhaps, also an emblem or 241 suggestion of the remorse of the apostle for his denial of his Lord. Another adaptation of classic symbolism is the employment of the stag, the attribute of Diana, as the emblem of the Christian thirsting after the living waters. It is generally represented drinking at a stream, probably in allusion to the Psalmist’s panting after God as the hart after the water-brooks.[381] The hare sometimes occurs, an appropriate type of the persecution of the Christians, hunted amid those secret burrows in the earth like rabbits in their warrens. The horse is interpreted as symbolizing eagerness or speed in running the Christian race, or, perhaps, the course of life happily accomplished;[382] and the lion, fortitude of soul, or, from the notion that he slept with open eyes, vigilance against the snares of sin.[383] It is remarkable that the dog, a pagan symbol of fidelity, never occurs except as 242 accessory in hunting scenes of manifestly heathen type; probably on account of the abhorrence of this, to them, unclean beast, by the Jews, who so largely impressed their characteristics on Christian thought and feeling.[384] The serpent, a common pagan symbol, and with the cock the attribute of Æsculapius, nowhere appears but in the scene of the temptation of Eve by the “Old Serpent, the Devil.”