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
Alliance between Carthage and Macedonia
The long-discussed offensive alliance between Carthage and Macedonia had been delayed, first by the sudden death of Antigonus, and then by the indecision of his successor Philip and the unseasonable war waged by him and his Greek allies against the Aetolians (534-537).
It was only now, after the battle of Cannae, that Demetrius of Pharos found Philip disposed to listen to his proposal to cede to Macedonia his Illyrian possessions--which it was necessary, no doubt, to wrest in the first place from the Romans--and it was only now that the court of Pella came to terms with Carthage.
Macedonia undertook to land an invading army on the east coast of Italy, in return for which she received an assurance that the Roman possessions in Epirus should be restored to her.
Do you see any typos or other mistakes? Please let us know and correct them
Reference address : https://www.ellopos.net/elpenor/rome/3-05-war-hannibal-cannae.asp?pg=40