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
Character of the Editing of Roman Comedy - Persons and Situations
But the restrictions thus stringently and laboriously imposed by
custom and police on Roman poetry stifled its very breath, Not without
reason might Naevius declare the position of the poet under the
sceptre of the Lagidae and Seleucidae enviable as compared with his
position in free Rome.(23)
23. The remarkable passage in the -Tarentilla- can have no
other meaning:--
-Quae ego in theatro hic meis probavi plausibus,
Ea non audere quemquam regem rumpere:
Quanto libertatem hanc hic superat servitus!-
The degree of success in individual
instances was of course determined by the quality of the original
which was followed, and by the talent of the individual editor; but
amidst all their individual variety the whole stock of translations
must have agreed in certain leading features, inasmuch as all the
comedies were adapted to similar conditions of exhibition and a
similar audience. The treatment of the whole as well as of the
details was uniformly in the highest degree free; and it was necessary
that it should be so.