on of the Italian and
Sicilian Greeks under one control was a closer concert also on the
part of their antagonists. Carthage and Rome now converted their old
commercial treaties into an offensive and defensive league against
Pyrrhus (475), the tenor of which was that, if Pyrrhus invaded Roman
or Carthaginian territory, the party which was not attacked should
furnish that which was assailed with a contingent on its own territory
and should itself defray the expense of the auxiliary troops; that in
such an event Carthage should be bound to furnish transports and to
assist the Romans also with a war fleet, but the crews of that fleet
should not be obliged to fight for the Romans by land; that lastly,
both states should pledge themselves not to conclude a separate peace
with Pyrrhus. The object of the Romans in entering into the treaty
was to render possible an attack on Tarentum and to cut off Pyrrhus
from his own country, neither of which ends could be attained without
the co-operation of the Punic fleet; the object of the Carthaginians
was to detain the king in Italy, so that they might be able without
molestation to carry into effect their designs on Syracuse.(5) It was
accordingly the interest of both powers in the first instance to
secure the sea between Italy and Sicily. A powerful Carthaginian
fleet of 120 sail under the admiral Mago proceeded from Ostia, whither
Mago seems to have gone to conclude the treaty, to the Sicilian
straits. The Mamertines, who anticipated righteous punishment for
their outrage upon the Greek population of Messana in the event of
Pyrrhus becoming ruler of Sicily and Italy, attached themselves
closely to the Romans and Carthaginians, and secured for them the
Sicilian side of the straits. The allies would willingly have brought
Rhegium also on the opposite coast under their power; but Rome could
not possibly pardon the Campanian garrison, and an attempt of the
combined Romans and Carthaginians to gain the city by force of arms
miscarried. The Carthaginian fleet sailed thence for Syracuse and
blockaded the city by sea, while at the same time a strong Phoenician
army began the siege by land (476). It was high time that Pyrrhus
should appear at Syracuse: but, in fact, matters in Italy were by no
means in such a condition that he and his troops could be dispensed
with there. The two consuls of 476, Gaius Fabricius Luscinus, and
Quintus Aemilius Papus, both experienced generals, had begun