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
To the question of the Carthaginians, who
was in that case to protect them even against their own emigrants--
against the army, which had swelled to 20,000 men, under the command
of Husdrubal who had saved himself from the sentence of death by
flight--it was replied, that this would be the concern of the Romans.
Accordingly the council of the city obsequiously appeared before the
consuls, with all their fleet-material, all the military stores of the
public magazines, all the arms that were found in the possession of
private persons--to the number of 3000 catapults and 200,000 sets of
armour--and inquired whether anything more was desired.
Then the
consul Lucius Marcius Censorinus rose and announced to the council,
that in accordance with the instructions given by the senate the
existing city was to be destroyed, but that the inhabitants were
at liberty to settle anew in their territory wherever they chose,
provided it were at a distance of at least ten miles from the sea.