Note 2231 — BOOK IX. THE NATURAL HISTORY OF FISHES.

These works were completed by Nero the successor of Claudius, and consisted of a new and more capacious harbour on the right arm of the Tiber. It was afterwards enlarged and improved by Trajan. This harbour was simply called “Portus Romanus,” or “Portus Augusti;” and around it there sprang up a town known as “Portus,” the inhabitants of which were called “Portuenses.”