Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Scythŏpŏlis, is, f., = Σκυθόπολις, a town of Palestine, now Bysān, Plin. 5, 18, 16, § 74; Vulg. 2 Macc. 12, 29.
Hence, Scythŏpŏlītae, ārum, m., the inhabitants of Scythopolis, Vulg. 2 Macc. 12, 30.