I.
- Iapygians, [5].
- Ignobiles, [128 (note)].
- Illyria and Illyrians, [78-9].
- Illyrian Wars, [78], [79].
- Istria subdued, [115].
- Italia, [7].
- Italians proper, [5].
- Italicus, C. Silius, [344].
- Italy, geography of, [1];
- fertility, [5];
- early inhabitants, [5];
- struggles in Central Italy, [59];
- under Augustus, [286], [287].
- Iulus, or Ascanius, [8].