f the Abruzzi and the region of the Fucine lake threatened
the capital in dangerous proximity. An independent corps under Gnaeus
Pompeius Strabo was sent into Picenum in order that, resting for
support on Firmum and Falerio, it might threaten Asculum; but the
main body of the Roman northern army took its position under the
consul Lupus on the borders of the Latin and Marsian territories,
where the Valerian and Salarian highways brought the enemy nearest to
the capital; the rivulet Tolenus (Turano), which crosses the Valerian
road between Tibur and Alba and falls into the Velino at Rieti,
separated the two armies. The consul Lupus impatiently pressed for
a decision, and did not listen to the disagreeable advice of Marius
that he should exercise his men--unaccustomed to service--in the first
instance in petty warfare. At the very outset the division of Gaius
Perpenna, 10,000 strong, was totally defeated. The commander-in-
chief deposed the defeated general from his command and united the
remnant of the corps with that which was under the orders of Marius,
but did not allow himself to be deterred from assuming the offensive
and crossing the Tolenus in two divisions, led partly by himself,
partly by Marius, on two bridges constructed not far from each other.
Publius Scato with the Marsians confronted them; he had pitched his
camp at the spot where Marius crossed the brook, but, before the
passage took place, he had withdrawn thence, leaving behind the mere
posts that guarded the camp, and had taken a position in ambush
farther up the river. There he attacked the other Roman corps under
Lupus unexpectedly during the crossing, and partly cut it down, partly
drove it into the river (11th June 664). The consul in person and
8000 of his troops fell. It could scarcely be called a compensation
that Marius, becoming at length aware of Scato's departure, had crossed
the river and not without loss to the enemy occupied their camp.
Yet this passage of the river, and a victory at the same time obtained
over the Paelignians by the general Servius Sulpicius, compelled the
Marsians to draw their line of defence somewhat back, and Marius, who
by decree of the senate succeeded Lupus as commander-in-chief, at least
prevented the enemy from gaining further successes. But, when Quintus
Caepio was soon afterwards associated in the command with equal powers,
not so much on account of a conflict which he had successfully
sustained, as beca