CHALCIS, in Ancient Geography, a city of Chalcidice. See CHALCIDICE. Another of Ætolia, near the mouth of the river Evenus, on the Ionian sea, at the foot of a cognominal mountain; and therefore called by some Hypochalcis.—Another of Eubœa (Strabo), on the Eutipus, the country of Lycophron the poet, one of the seven which formed the constellation Pleiades. Now Negroponte. E. Long. 24. 30. Lat. 38. 30.—A fourth, the capital of Chalcidice in Syria; distinguished by the surname ad Belum, a mountain or a river; and ad Libanum, from its situation (Pliny.)