On the side-walls of the Santa Prisca Mithraeum
, two layers of painting have to be distinguished; these are set off with red bands. Dr C. C. van Essen, who studied the style of these paintings, dates the first layer in the end of the second cent. A.D. and the second layer in the first quarter of the third cent. A.D. Our description is partly taken from the publication of Ferrua, who was able to observe details, which now are lost.
On the Southern wall (I2) successively (cf. Ferrua, fig. 8):
1) A bearded man is sitting on a throne. He is dressed in a red tunic with long sleeves, piped