Next after Cassandria is the remaining part of the sea-coast of the Toronæan Gulf, as far as Derris. It is a promontory opposite the district of Canastrum, and forms a gulf. Opposite to Derris, to the east, are the promontories of Athos; between them is the Singitic Gulf, which receives its name from an ancient city in it, Singus, now destroyed. Next is the city Acanthus, situated on the isthmus of Athos,2898 founded by the Andrii; whence, by many, it is called the Acanthian Gulf. E.