xyster, Zapteryx Jordan [D. S.] & Evermann [B. W.] 1896:65 [Bulletin of the United States National Museum No. 47; ref. 2443] Pacific Coast of Panama. Syntypes: YPM old Zool. Cat. 1994 (orig. 2, 1 lost in 1880s). Type catalog: Moore & Boardman 1991:24 [ref. 16741]. •Valid as Zapteryx xyster Jordan & Evermann 1896 -- (Hiyama in Kumada 1937:19 [ref. 39147] as Xapteryx xyster, Acero P. & Franke 1995:14 [ref. 22546], Page et al. 2013:55 [ref. 32708], Galván-Villa et al. 2016:143 [ref. 34871], Del Moral-Flores et al. 2016:109 [ref. 34398], Weigmann 2016:89 [ref. 34211], Last et al. 2016:465 [ref. 34473], Last & Séret 2016:126 [ref. 34994], Ehemann et al. 2018:26 [ref. 36194], Calle-Morán et al. 2020:244 [ref. 37881], González-Acosta et al. 2021:7 [ref. 38361], Page et al. 2023:43 [ref. 40505], Siccha-Ramirez et al. 2023:70 [ref. 40816], Vela-Espinosa et al. 2023:5 [ref. 40981]). Current status: Valid as Zapteryx xyster Jordan & Evermann 1896. Trygonorrhinidae. Distribution: Eastern Pacific: Mexico south to Peru. Habitat: marine.