Note 2965 — BOOK IV. AN ACCOUNT OF COUNTRIES, NATIONS, SEAS, TOWNS, HAVENS, MOUNTAINS, RIVERS, DISTANCES, AND PEOPLES WHO NOW EXIST OR FORMERLY EXISTED.
John Bostock translation
According to Ptolemy their chief town would be on the site of the modern Orchies in the department du Nord, but Cæsar makes it to be Nemetacum, the modern Arras, the capital of the department of the Pas de Calais.