Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Panchaeus, v. Panchaia, A.
Panchāĭa, ae, f., = Παγχαία, a fabulous island in the Erythrœan Sea, east of Arabia, rich in precious stones, incense, myrrh, etc.: totaque turiferis Panchaia pinguis arenis, Verg. G. 2, 139: (phoenicem) deferre nidum prope Panchaiam in Solis urbem, Plin. 10, 2, 2, § 4: dives, Tib. 3, 2, 23; Val. Fl. 6, 119; Claud. III. Cons. Honor. f.
Hence,