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
But, amidst the dreadful confusion in the city--which after the death of Hieronymus was agitated alternately by endeavours to re-establish the ancient freedom of the people and by the -coups de main- of the numerous pretenders to the vacant throne, while the captains of the foreign mercenary troops were the real masters of the place--Hannibal's dexterous emissaries, Hippocrates and Epicydes, found opportunity to frustrate the projects of peace.
They stirred up the multitude in the name of liberty; descriptions, exaggerated beyond measure, of the fearful punishment that the Romans were said to have inflicted on the Leontines, who had just been re-conquered, awakened doubts even among the better portion of the citizens whether it was not too late to restore their old relations with Rome; while the numerous Roman deserters among the mercenaries, mostly runaway rowers from the fleet, were easily persuaded that a peace on the part of the citizens with Rome would be their death-warrant.
So the chief magistrates were put to death, the armistice was broken, and Hippocrates and Epicydes undertook the government of the city. No course was left to the consul except to undertake a siege; but the skilful conduct of the defence, in which the Syracusan engineer Archimedes, celebrated as a learned mathematician, especially distinguished himself, compelled the Romans after besieging the city for eight months to convert the siege into a blockade by sea and land.
Do you see any typos or other mistakes? Please let us know and correct them
Reference address : https://www.ellopos.net/elpenor/rome/3-06-war-hannibal-cannae-zama.asp?pg=15