11. ex Īllyriīs: dē Īllyriīs would be more common.
Ch. 5.
13. Gallōrum: the Romans, recalling the terrible battle of Allia, Bk. I, 20, were panic-stricken at first. A large army was raised and stationed at Ariminum, where the first attack was expected. But the Gauls passed around the Roman army, and, falling in with a small reserve force, utterly defeated it. Instead of hastening to Rome, they resolved to put their plunder in a place of safety. The Roman army following them met them finally near Telamon, where the decisive battle was fought, and the Gauls were annihilated.
14. cōnsēnsit: ‘united.’
15. Fabiō: Q. Fabius Pictor, the earliest of the annalists. He wrote in Greek an account of the early history of Rome. He is frequently quoted by Livy.
17. tantum: ‘alone.’
Ch. 6.
20. M. Claudiō Mārcellō: he was five times consul. This was his first consulship. He was one of the chief generals of the Romans in the Second Punic War. He captured Syracuse after a siege of two years (Chs. 12, 14). He fell in battle 208 B.C., and was buried by the enemy with military honors (Ch. 16).
24. Mediōlānum: the modern Milan.
expūgnāvit: note the difference between expūgnō and oppūgnō.