SYBARIS, a city of Magna Graecia, on the Gulf of Tarentum, between the rivers Crathis (Crati) and Sybaris (Coscile), which now meet 3 m. from the sea, but in ancient times had independent mouths, was the oldest Greek colony in this region. It was an Achaean colony founded by Isus of Helice (about 72o B.c.), but had among its settlers many Troezenians, who were ultimately expelled. Placed in a very fertile, though now most unhealthy, region, and following a liberal policy in the admission of citizens from all quarters, the city became great and opulent, with a vast subject territory and daughter colonies even on the Tyrrhenian sea (Posidonia, Laus, Scidrus). For magnificence and luxury the Sybarites were proverbial throughout Greece, and in the 6th century no Hellenic city could compare with its wealth and splendour. At length contests between the democrats and oligarchs in which many of the latter were expelled and took refuge at Crotona, led to a war with that city, and the Crotoniats, with very inferior forces, were victorious. They razed Sybaris to the ground
and turned the waters of the Crathis over its ruins (510 B.c.). Explorations have so far failed to lead to a precise knowledge of the site. The only discoveries have been (I) that of an extensive necropolis, some 8 m. to the west of the confluence of the two rivers, of the end of the first Iron age, known as that of Torre Mordillo, the contents of which are now preserved at Potenza; (2) that of a necropolis of about 400 B.C.-the period of the greatest prosperity of Thurii (q.v.)—consisting of tombs covered by tumuli, in some of which were found fine gold plates with mystic inscriptions in Greek characters.