forming the gens Fabia in the year 275. These families composed, ultimately, the aristocracy. They were the people who filled all offices, and alone had the right of voting in the assemblies. As the gentes were subdivisions of the three ancient tribes, the _populus_ alone had _gentes_, so that to be a patrician and to have a gens were synonymous. With the growth of Rome new gentes or families were added which did not claim descent from the ancient tribes. The powerful gens of the Claudia came to Rome with Atta Claudius, their head, after the expulsion of the kings. Tullus Hostilius incorporated the Julii, Servilii and other gentes with the patricians. This ruling class, the descendants of the conquerors, became a powerful aristocracy, and ultimately learned to value pride of blood. There are very few names in Roman history, until the time of Marius, which did not belong to this noble class. What proud families were the Servilii, the Claudii, the Julii, the Cornelii, the Fabii, the Valerii, the Sempronii, the Octavii, the Sergii, and others. [Footnote: Liv., i. 33. Dionys., iii. 31.] The _Equites_ were originally elected from the patricians, and were cavalry soldiers, and did not form a distinct class till the time of the Gracchi. They were composed of rich citizens, whose wealth enabled them to become judices. They had the privilege of wearing a gold ring, and had seats reserved for them, like the Senate, at the theatre and circus. They increased in number with the increase of wealth, and formed an honorable corps from which the highest officers of the army and the civil magistrates were chosen. Admission to this body was an introduction to public life, and was a test of social position. It was composed of rich plebeians as well as patricians, and was based wholly on wealth. Pliny says, "It became the third order in the state, and to the title of _Senatus Populusque Romanus_, there began to be added, _et Equestris ordo_." [Sidenote: The Roman plebs.] [Sidenote: The tribunes.] [Sidenote: Gradual increase of their power.] [Sidenote: Their usurpations.]