PARNAHYBA, or PARNAHIBA  , a port of the state of Piauhy, Brazil, on the right bank of the Parnahyba river, 250 M. below the c pital, Therezina . Pop. of the municipality (18go), 4415 . Parnahyba is situated at the point where the most easterly of the delta outlets, or channels, called the Rio Iguarassfi, branches off from the main stream . All the outlet channels of the river are obstructed by bars built up by the strong current along the Atlantic coast, and only vessels of light draught can enter . The town has some well-constructed buildings of the old Portuguese type, including two churches and a fine hospital . Parnahyba is the commercial entrep8t of the state . It exports hides, goat-skins, cotton and tobacco, chiefly through the small port of Amarracao, at the mouth of the Rio Iguarassiu, 11 m. distant .