Species that contain: Xenocephalus and elongatus [ 3 ] records

australiensis, Gnathagnus elongatus Kishimoto [H.] 1989:310, Fig. 2 [Japanese Journal of Ichthyology v. 36 (no. 3); ref. 13562] Northwest Shelf, 190 kilometers northwest of Port Hedland, Western Australia, 18°10'S, 118°18'E, depth 299 meters. Holotype: AMS I.22821-014. Paratypes: AMS I.22821-051 (3), I.23423-002 (1); WAM P.19119-001 (1), P.28072-006 (2), P.28086-001 (2). Type catalog: Hutchins & Smith 1991:35 [ref. 19335], Moore et al. 2008:39 [ref. 30117]. •Synonym of Xenocephalus australiensis (Kishimoto 1989) but a valid subspecies as described -- (Kishimoto 2001:3531 [ref. 26287]). •Valid as Xenocephalus australiensis (Kishimoto 1989) -- (Hutchins 2001:41 [ref. 25847], Bray & Hoese 2006:1515 [ref. 29049], Vilasri 2013:91 [ref. 33304], Psomadakis et al. 2020:536 [ref. 37272]). Current status: Valid as Xenocephalus australiensis (Kishimoto 1989). Uranoscopidae. Distribution: Eastern Indian Ocean, western Pacific. Habitat: marine.

elongatus, Uranoscopus Temminck [C. J.] & Schlegel [H.] 1843:27, Pl. 9 (fig. 2) [Fauna Japonica Parts 2-4; ref. 4371] Japan. Lectotype: RMNH D709 (stuffed). Paralectotypes: RMNH D710 (1, stuffed). Lectotype selected by Boeseman 1947:41 [ref. 12876]. •Valid as Gnathagnus elongatus (Temminck & Schlegel 1843) -- (Okamura in Okamura et al. 1982:259, 386 [ref. 8256], Kishimoto in Masuda et al. 1984:293 [ref. 6441], Okamura in Okamura et al. 1985:561, 714 [ref. 8056], Pietsch 1989:294 [ref. 12541], Kishimoto 1989:313 [ref. 13562], Cheng & Zhou 1997:324 [ref. 26385] dated 1846, Choi et al. 2003:385, 648 [ref. 26218]). •Valid as Xenocephalus elongatus (Temminck & Schlegel 1843) -- (Kishimoto in Randall & Lim 2000:631 [ref. 25122], Nakabo 2000:1076 [ref. 25182], Shinohara et al. 2001:330 [ref. 25995], Nakabo 2002:1076 [ref. 26193], Shinohara et al. 2011:54 [ref. 31715], Vilasri 2013:91 [ref. 33304], Shinohara et al. 2014:271 [ref. 33330], Kim et al. 2020:163 [ref. 39118], Sonoyama et al. 2020:98 [ref. 37637]). Current status: Valid as Xenocephalus elongatus (Temminck & Schlegel 1843). Uranoscopidae. Distribution: Western Pacific: Indonesia; East China Sea and Ryukyu Islands (Japan) north to Korea and central Japan. Habitat: marine.

iburius, Ariscopus Jordan [D. S.] & Snyder [J. O.] 1902:479, Fig. 4 [Proceedings of the United States National Museum v. 24 (no. 1263); ref. 2513] Tomakomaki, Iburi, Hokkaido, Japan. Holotype: CAS-SU 6544. Paratypes: (1). •Synonym of Gnathagnus elongatus (Temminck & Schlegel 1843) -- (Pietsch 1989:294 [ref. 12541], Kishimoto 1989:312 [ref. 13562]). •Synonym of Xenocephalus elongatus (Temminck & Schlegel 1843) based on generic placement of elongatus. Current status: Synonym of Xenocephalus elongatus (Temminck & Schlegel 1843). Uranoscopidae. Habitat: marine.