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
We meet also with several, though
less definite, traces of an ancient intercourse of the Latins with
the Chalcidian cities in Lower Italy, Cumae and Neapolis, and with
the Phocaeans in Velia and Massilia. That it was however far less
active than that with the Siceliots is shown by the well-known
fact that all the Greek words which made their way in earlier times
to Latium exhibit Doric forms--we need only recall -Aesculapius-,
-Latona-, -Aperta-, -machina-. Had their dealings with the originally
Ionian cities, such as Cumae(26) and the Phocaean settlements,
been even merely on a similar scale with those which they had with
the Sicilian Dorians, Ionic forms would at least have made their
appearance along with the others; although certainly Dorism early
penetrated even into these Ionic colonies themselves, and their
dialect varied greatly.