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 Romans were glad to leave the far from attractive region to itself. But the complaints of the Roman Illyrians, particularly of the Daorsi, who dwelt on the Narenta to the south of the Dalmatians, and of the inhabitants of the islands of Issa (Lissa), whose continental stations Tragyrium (Trau) and Epetium (near Spalato) suffered severely from the natives, compelled the Roman government to despatch an embassy to the latter, and on receiving the reply that the Dalmatians had neither troubled themselves hitherto about the Romans nor would do so in future, to send thither an army in 598 under the consul Gaius Marcius Figulus.
He penetrated into Dalmatia, but was again driven back as far as the Roman territory. It was not till his successor Publius Scipio Nasica took the large and strong town of Delminium in 599, that the confederacy conformed and professed itself subject to the Romans. But the poor and only superficially subdued country was not sufficiently important to be erected into a distinct province: the Romans contented themselves, as they had already done in the case of the more important possessions in Epirus, with having it administered from Italy along with Cisalpine Gaul; an arrangement which was, at least as a rule, retained even when the province of Macedonia had been erected in 608 and its north western frontier had been fixed to the northward of Scodra.(9)
9. Cf. IV. I. Province of Macedonia. The Pirustae in the valleys of the Drin belonged to the province of Macedonia, but made forays into the neighbouring Illyricum (Caesar, B. G. v. 1).
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Reference address : https://www.ellopos.net/elpenor/rome/4-05-peoples-north.asp?pg=13