History of the Peloponnesian War

Siphae, a town on the shore of the Crisaean Gulf in the territory of Thespiae, was to be betrayed by certain men; and Chaeronea, a city which is tributary to Orchomenus—the city which was formerly called Minyan, but is now called Boeotian—was to be put into the hands of the Athenians by others, the fugitives from Orchomenus, who also took into their pay some Peloponnesians, being especially active in the conspiracy. Some Phocians also had a share in the plot, Chaeronea being on the borders of Boeotia, and adjacent to Phanotis, which is in Phocis.

The Athenians were to occupy Delium, the sanctuary of Apollo which is in the territory of Tanagra and opposite Euboea; and all these events were to take place simultaneously on an appointed day, in order that the Boeotians might not concentrate their forces at Delium, but that the several states might be occupied with their own disaffected districts.