In 1930, it was discovered in the area of Via Dottor Consoli, in the northwestern sector of current urban centre of Catania, a cemetery complex used from the Hellenistic to the Byzantine era, by the Superintendence of Antiquities of Syracuse, under the direction of then Inspector G. Libertini. In that occasion, portions of the perimeter strip of a floor mosaic inside the basilica were brought to light, which during later excavation campaigns was completely excavated and detached in 1957 to be exhibited in the “salone di San Giorgio” of the Castello Ursino. Currently, it is kept in the storerooms of the ex-Manifattura Tabacchi (site of the future Regional Interdisciplinary Museum of Catania).
 The mosaic of the basilica nave, dated to the middle of the sixth century AD, represents common secular themes on three registers: running felids, animals in combat and the marine scene with two men on a boat in front of a dragon with red coat dotted with white eyelets. In a panel there is a snake twisted around the trunk of a tree, in my opinion, to be identified with the Tree of knowledge mentioned by the sacred texts. In the Apocalypse, “the old serpent, which is called the Devil and Satan, the deceiver of the whole world” (Revelation 12, 9) becomes a great red dragon, who appears in the marine scene. An interpretative reading of the mosaic is proposed in the light of the rhetorical procedure of “significant inclusion” to enhance the unity and narrative continuity between the Old and New Testament.