Thus, during the reigns of Justin, Tiberius II., and Maurice, the greater part of Justinian’s Italian conquests were lost, and formed once more into Teutonic states. The emperor retained only two large stretches of territory, the one in Central Italy, where he held a broad belt of land, extending right across the peninsula, from Ravenna and Ancona on the Adriatic, to Rome on the Tyrrhenian Sea; the other comprehending the extreme south of the land—the “toe” and “heel” of the Italian boot—and comprising the territory of Bruttium and the Calabrian(15) towns of Taranto, Brindisi, and Otranto. Sardinia and Sicily were also left untouched by the Lombards, who never succeeded in building a fleet. The Roman territory which stretched across Central Italy cut the Lombards in two, the king ruling the main body of them in Tuscany and the valley of the Po; while the dukes of Spoleto and Benevento maintained an isolated existence in the south. [Illustration] Cross Of Justinus II. (_From the Vatican._) (_From "L’Art Byzantin," Par C. Bayet. Paris, Quantin, 1883._) This partition of Italy between the Lombards and the empire is worth remembering, from the fact that never again, till our own day, was the whole peninsula gathered into a single state. Not till 1870, when the kingdom of United Italy was completed by the conquest of Rome, did a time come when all the lands between the Alps and the Straits of Messina were governed by one ruler. Justinian had no successor till Victor Emmanuel.