In the course of some operations recently undertaken to preserve the ancient Ponderarium at Tivoli from the infiltration of moisture, the torso of a statue of excellent workmanship was discovered lying on a marble pavement. Good results being thus assured, the Ministry of Public Instruction decided to continue excavations on the site. The work was carried out under the supervision of Professor Alessio Valle and Cavaliere Silla Rosa de Angelio, Honorary Inspector of Ancient Monuments at Tivoli, and was speedily crowned with success. There came to light, besides, two other fragments of the statue, another part of the bust and a head of different proportions; and it was also ascertained that the pavement, made of slabs of white and violet-coloured marble, belonged to a rectangular chamber which showed traces of an apse let into one of the shorter sides and which was in an excellent state of preservation.