In this paper lire author analyses 22 inscriptions front Roman Senia which - directly or indirectly - give importarti dala on the municipal status or Lite settlement, its municipal institutions and administrative and public officials, as well as on the worshipping of Roman and other gods. The inscriptions also enable partial knowledge of ethnic and social structure of its population. According to their character these inscriptions can be divided in three groups: public (6), votive (7) and sepulchral (9) inscriptions. The archeological excavations have partly confirmed what some of the inscriptions had explicitly stated, that is, die existence of city curia, baths and sanctuaries of Magna Mater, Diana, Liber, Mithras and Serapis. The inscriptions also prove Lhe existence of the city council (ardo decurionum) and they mention by name only two of its councillors dccurioncs. Three inscriptions mention the priests whose obligation was to promote the imperial cull. Twice the priests were Augustals, confirming in the sante time lite existence of Augustal societies (ordo and corpus Augustalium)', the third priest was sacerdos Liburniae. On the basis of the two altar inscriptions dedicated to the Invincible M ithras it is possible to conclude that in Senia in the midst of the 2nd century A.D. existed the Custom office (publicum portorii lUyrici), that indicates its great economic, mercantile and traffic importance. The author gives evidence on the ethnic structure of the population according the analysis of 25 personal names attested on inscriptions. On the basis of names and onomastic patterns the author distinguishes Italic and Oriental persons. In the earliest phase of Roman Senia inscriptions exclusively attested the presence of Italic population, besides the natives who had been rapidly romantzed and therefore whose presence on inscriptions could hardly be noted only on the basis of their nomenclature. According to inscriptions Valer» were the leading family in Senia whose members achieved the highest ranks in the municipal government. Such art Italic structure of Senia population - among which there must have been a certain percentage of persons who were probably of native origin despite their romanized nomenclature - prevailed approximately until the beginning of lire second half of die 2nd century. Then die well-defined change in ethnic and social structure look place, dial is, Lhe inscriptions then started to name persons of die Greek and Oriental origin. According to the inscriptions dated from die midst 2nd century to the first decades of the 3rd cent. Italics (with the native romanized inhabitants) formed one half, and the Orientals the other half of the population. Some of these Orientals, after they had become freedmen performed some minor sacerdotal functions, and then they rose from the highest ranks in die municipal government, due to their abilities and after diey had acltieved dial right, cither by investing in some municipal building activities or by some other similar acts. The earliest inscription is die tombstone of L. Calpurriius Maximus, and the latest one is about die renewal of the city baths, exactly dated in the period between 239 and 241 A.D.
