31. Next follows Chalcideis, and the isthmus of the peninsula[71] of the Teians and Erythræans; the latter inhabit the interior of the isthmus. The Teians and Clazomenians are situated on the isthmus itself. The Teians occupy the southern side of the isthmus, namely, Chalcideis;[72] the Clazomenians, the northern side, whence they are contiguous to the Erythræan district. At the commencement of the isthmus is Hypocremnus, having on this side the Erythræan, and on the other, the Clazomenian territory. Above Chalcideis is a grove, dedicated to Alexander, the son of Philip, and a festival called Alexandreia is proclaimed and celebrated there by the common body of the Ionians. The passage across the isthmus from the Alexandrine grove and Chalcideis, as far as the Hypocremnus, is 50 stadia (150?). The circuit round by sea is more than 1000 stadia. Somewhere about the middle of the voyage is Erythræ,[73] an Ionian city, with a port, having in front four small islands, called Hippoi (the Horses). 32. But before we come to Erythræ, the first place we meet with is Eræ,[74] a small city belonging to the Teians. Next is Corycus, a lofty mountain; and below it, Casystes, a port;[75] then another, called the port of Erythræ, and afterwards many others. [CAS. 644] It is said that the whole sea-coast along the Corycus was the haunt of pirates, who were called Corycæans, and who had contrived a new mode of attacking vessels. They dispersed themselves among the ports, and went among the merchants who had just arrived, and listened to their conversation respecting the freight of their ships, and the places whither they were bound. The pirates then collected together, attacked the merchants at sea, and plundered the vessels. Hence all inquisitive persons and those who listen to private and secret conversation we call Corycæans, and say proverbially, “The Corycæan must have overheard it,” when any one thinks that he has done or said anything not to be divulged, but is betrayed by spies or persons anxious to be informed of what does not concern them. 33. Next to Corycus is Halonnesus, a small island, then the Argennum,[76] a promontory of the Erythræan territory, situated close to Poseidium, belonging to the Chians, and forming a strait of about 60 stadia in width. Between Erythræ and Hypocremnus is Mimas,[77] a lofty mountain, abounding with beasts of chase, and well wooded. Then follows Cybelia, a village, and a promontory called Melæna,[78] (or Black,) which has a quarry whence millstones are obtained. 34. Erythræ was the native place of the Sibyl, an ancient inspired prophetess. In the time of Alexander there was another Sibyl, who was also a prophetess, whose name was Athenais, a native of the same city; and in our age there was Heracleides the Herophilian physician, a native of Erythræ, a fellow-student of Apollonius surnamed Mus.