=Aquileia=, or =Aquilegia=, a town founded by a Roman colony, called from its grandeur, _Roma secunda_, and situate at the north of the Adriatic sea, on the confines of Italy. The Romans built it chiefly to oppose the frequent incursions of the barbarians. The Roman emperors enlarged and beautified it, and often made it their residence. _Silius Italicus_, bk. 8, li. 605.――_Martial_, bk. 4, ltr. 25.――_Mela_, bk. 2, ch. 4. =Aquilius Niger=, an historian mentioned by _Suetonius_, _Augustus_, ch. 11.――――Marcus, a Roman consul who had the government of Asia Minor. _Justin_, bk. 36, ch. 4.――――Sabinus, a lawyer of Rome, surnamed the Cato of his age. He was father to Aquilia Severus, whom Heliogabalus married.――――Severus, a poet and historian in the age of Valentinian. =Aquillia= and =Aquilia=, a patrician family at Rome, from which few illustrious men rose. =Aquĭlo=, a wind blowing from the north. Its name is derived, according to some, from _Aquila_, on account of its keenness and velocity. =Aquilonia=, a city of the Hirpini in Italy. _Livy_, bk. 10, ch. 38. =Aquinius=, a poet of moderate capacity. _Cicero_, bk. 5, _Tusculanæ Disputationes_. =Aquīnum=, a town of Latium, on the borders of the Samnites, where Juvenal was born. A dye was invented there, which greatly resembled the real purple. _Horace_, bk. 1, ltr. 10, li. 27.――_Strabo._―― _Silius Italicus_, bk. 8, li. 404.――_Juvenal_, satire 3, li. 319. =Aquitania=, a country of Gaul, bounded on the west by Spain, north by the province of Lugdunum, south by the province called Gallia Narbonensis. Its inhabitants are called Aquitani. _Pliny_, bk. 4, ch. 17.――_Strabo_, bk. 4. =Ara=, a constellation, consisting of seven stars, near the tail of the Scorpion. _Ovid_, _Metamorphoses_, bk. 2, li. 138. =Ara lugdunensis=, a place at the confluence of the Arar and Rhone. _Juvenal_, satire 1, li. 44. =Arabarches=, a vulgar person among the Egyptians, or perhaps an unusual expression for the leaders of the Arabians, who resided in Rome. _Juvenal_, satire 1, li. 130. Some believe that Cicero, bk. 2, ltr. 17, _Letters to Atticus_, alluded to Pompey under the name of Arabarches.