In the division of the Themes, or provinces described by Constantine Porphyrogenitus, (de Thematibus, l. i. p. 9, 10,) the Obsequium, a Latin appellation of the army and palace, was the fourth in the public order. Nice was the metropolis, and its jurisdiction extended from the Hellespont over the adjacent parts of Bithynia and Phrygia, (see the two maps prefixed by Delisle to the Imperium Orientale of Banduri.)