Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
The fact that in the case of the Hernici at least Anagnia had taken part in the last stage of the Samnite war, furnished the desired reason for dissolving the old relation of alliance. The fate of the Anagnines was, as might be expected, far harder than that which had under similar circumstances been meted out to the Latin communities in the previous generation. They not merely had, like these, to acquiesce in the Roman citizenship without suffrage, but they also like the Caerites lost self-administration; out of a portion of their territory on the upper Trerus (Sacco), moreover, a new tribe was instituted, and another was formed at the same time on the lower Anio (455).
The only regret was that the three Hernican communities next in importance to Anagnia, Aletrium, Verulae, and Ferentinum, had not also revolted; for, as they courteously declined the suggestion that they should voluntarily enter into the bond of Roman citizenship and there existed no pretext for compelling them to do so, the Romans were obliged not only to respect their autonomy, but also to allow to them even the right of assembly and of intermarriage, and in this way still to leave a shadow of the old Hernican confederacy. No such considerations fettered their action in that portion of the Volscian country which had hitherto been held by the Samnites.
Do you see any typos or other mistakes? Please let us know and correct them
Reference address : https://www.ellopos.net/elpenor/rome/2-06-italians-rome.asp?pg=28