The inhabitants of these cities in the themes of Dalmatia and Dyrrhachium were the remains of the Roman provincials from all parts of Illyria. Porphyrogenitus calls them Romans, as distinguished from the Ῥωμαῖοι or Byzantine Greeks. In spite of all subsequent Slavonic incursions Latin, and later Italian, always remained the official language; it was also the common language of the people all down the coast, save at Ragusa, where Slavonic was also spoken at an early date.[8] Other fragments of the Roman population were to be found perhaps among the shepherds of the mountains, who were either Latins or Latinised descendants of the native Illyrians. The Slaves speak of them as together with the town-dwellers as Vlachs, which word signifies Italians or Rumanians to this day. The townsmen described these shepherds as Maurovlachs, _i.e._ “Sea Vlachs” or “Black Vlachs.”[9] The other Dalmatian towns and all the country outside the towns were occupied, as we have said, by the Southern Slaves. Of these the two principal tribes were the Serblii or Serbs and the Chrobatians or Croatians. The latter settled in the northern part of the country; their frontiers were the Save, the Kulpa, the Arsia, and the Četina. Their settlement seems to have preceded that of the Serbs. They came from the land beyond the Carpathians, with the name of which theirs may have been connected. Croatia was divided into fourteen _Župe_ or counties, each governed by a _Župan_. The various _Župans_ owed a somewhat shadowy allegiance to a Grand Župan, whose title was afterwards changed to that of king. The Serbs, who issued forth from what is now Galicia, settled in the land to the south and east of that of the Croatians, _i.e._ the modern kingdom of Servia, Old Servia, Montenegro, Northern Albania, and Dalmatia south of the Četina. For many centuries they recognised no central authority, but were divided into tribes, of which the most important were the Diocletiani or Docletiani, who occupied what is now Montenegro and part of Albania; the Terbuniotae, whose country, called Terbunia or Tribunia or Travunia, centres round the modern Trebinje, with the semi-independent southern district of Canale or Canali;[10] the coast north of Ragusa up to the Narenta was occupied by the Zachloumoi of Constantine Porphyrogenitus, and was called Zachlumje, Zachulmia, Hlum, or Chelmo. It corresponds to the Herzegovina.[11] About the Narenta was the land of the Narentani (the Ἀρεντάνοι or Παγάνοι of Porphyrogenitus), notorious for their piratical exploits. This tribe was converted to Christianity much later than the other Serbs, whence their name of Pagani. Inland was Bosnia, inhabited by various tribes. Still deeper in the interior was the territory of the Serbs proper.[12]