Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Cŏrōnē, ēs, f., = Κορώνη, a city on the west coast of the Messenian bay, Liv. 39, 49, 1; Plin. 4, 5, 7, § 15.
Hence, adj.: Cŏrō-naeus, a, um, = Κορωναῖος, Coronean: sinus, now the Golfo de Coron, Plin. 4, 5, 7, § 15.