Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Pandātārĭa (-ērĭa or -ōrĭa), ae, f., a small island in the Tyrrhenian Sea, a place of exile under the emperors, now the island of Vandolina, Varr. R. R. 1, 8, 5; 3, 5, 7; Plin. 3, 6, 11, § 82; Suet. Tib. 53; Tac. A. 1, 53; 14, 62; Mart. Cap. 6, § 644; Mela, 2, 7.