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
The same distinction shows itself in the artistic treatment. First
of all the players receive back their appropriate masks, and greater
care is observed as to the scenic arrangements, so that it is no
longer the case, as with Plautus, that everything needs to take
place on the street, whether belonging to it or not. Plautus ties
and unties the dramatic knot carelessly and loosely, but his plot
is droll and often striking; Terence, far less effective, keeps
everywhere account of probability, not unfrequently at the cost of
suspense, and wages emphatic war against the certainly somewhat
flat and insipid standing expedients of his predecessors, e. g.
against allegoric dreams.(3)
3. A counterpart to the hind chased by dogs and with tears calling
on a young man for help, which Terence ridicules (Phorm. prol. 4),
may be recognized in the far from ingenious Plautine allegory of
the goat and the ape (Merc, ii. 1). Such excrescences are
ultimately traceable to the rhetoric of Euripides (e. g.
Euripides Hecuba 90).