Species: Zapteryx xyster
- Syntypes: YPM old Zool. Cat. 1994 (orig. 2, 1 lost in 1880s).
Type locality: Pacific Coast of Panama.
Etymology: xyster (= a scraper), perhaps referring to “entire lower surface covered with fine shagreen”. (From : The ETYFish project)
- Jordan, D.S. & Evermann, B.W. 1896. The fishes of North and Middle America: a descriptive catalogue of the species of fish-like vertebrates found in the waters of North America north of the Isthmus of Panama. Part I. Bulletin of the United States National Museum 47(1): i–lx + 1–1240. BHL Reference page.