Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Naucrătes, is, m., = Ναυκράτης, a Greek historian of Erythræ, a pupil of Isocrates, Cic. de Or. 2, 23, 94; 3, 44, 173; id. Or. 51, 172; Quint. 3, 6, 3.
Naucrătis, is, f., = Ναύκρατις, a town of the Delta in Egypt, now Salhadschar, Plin. 5, 10, 11, § 64; 31, 10, 46, § 111.
Hence,