CATUSIACUM a position in north Gallia, which appears in the Antonine Itin. on the road from Bagacum ( Bavay) to Durocortorum ( Reims). It is placed vi Gallic leagues or 9 Roman miles from Verbinum ( Vervins), and it seems to be Chaoursat the passage of the Serre, a small tributary of the Oise. The same route is in the Table, but Catusiacum is omitted.
[G.L]