Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Perseus.
Tălăus, i, m., = Ταλαός, an Argonaut, the father of Adrastus and Eriphyle, Ov. Ib. 356.
Hence, Tălăīŏnĭdes, ae, m., one sprung from Talaus, the offspring of Talaus, of Adrastus, Stat. Th. 5, 18; 2, 140; of Eriphyle, Ov. A. A. 3, 13.