LISSUS, (anc. geog.), the last town of Illyricum, towards Macedonia, situated on the Drilo. It had a capacious port, the work of Dionysius the Tyrant, who led the colony thither, enlarged and walled it round, (Diodorus Siculus.) Now called Allesso, in Albania, on the Drino, near the Gulph of Venice. E. Long. 20. N. Lat. 42.