Bieber, Greek and Roman Theater, figs. 225, 418. D.B. Thompson, A.J.A., LIV, 1950, p. 380. Hesperia 21, 1952, pp. 142. Weber, Terracotten, pl. XXX, 321. Webster, Studies for D.M. Robinson, I, pp, 590ff ... Agora 6 21 ... Scriptores Historiae Augustae, Ant. Elagabalus, XXII