Fragmentum tabulae magnae marmoreae litteris magnis parum bonis saeculi quinti, effossum in monte Quirinali ubi nunc transit via quae dicitur Nazionale.
A low-relief of Mithras tauroctone was found in 1928 by the Comtesse de Robi- lant in a cellar, full of the debris of the Palazzo del Grillo behind the Forum of Augustus.
"Parte inferiore di un fusto di candelabro a guisa di tronco di palma uscente da un nascimento di foglie d'acanto; nel plinto in tre lati la inscrizione" (Lan- ciani in BAM 1875,248).
In the room left to the entrance of the Mithraeum, there is a well, from which water runs through a pipe, which penetrates the wall and empties in a square basin.
In the irregular room opposite the sanctuary, the so-called Dominicum Clementis, a marble statuette, representing a bearded person as the good Shepherd was found.