Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Bantĭa, ae, f., = Βαντία, a town of Apulia, in the vicinity of Venusia, on the southern declivity of the mountain, now Banzi, Liv. 27, 25, 13.
Hence, Bantīnus, a, um, adj., of or pertaining to Bantia: saltus, Hor. C. 3, 4, 15.
Bantīni, ōrum, m., the inhabitants of Bantia, Plin. 3, 11, 15, § 98.