The two roundels depict, on the left, the obscure myth of Jupiter and Garamantis, in which the nymph was ravished by the god after a crayfish caught her by the toe; and on the right, Syrinx escaping the lascivious Pan by being turned into a reed. The rectangular frames in the curves of the vault were to be filled with landscapes by Gaspard Dughet. No. 144