elymus, Atherion Jordan [D. S.] & Starks [E. C.] 1901:203, Fig. 3 [Proceedings of the United States National Museum v. 24 (no. 1250); ref. 2524] Misaki, Kanagawa Prefecture, Sagami Sea, Japan. Holotype: CAS-SU 6528. Paratypes: CAS-SU 6711 (10 or 1), USNM 49812 (6). Types: Shinohara & Williams 2006:553 [ref. 31656]. •Valid as Atherion elymus Jordan & Starks 1901 -- (Yoshino in Masuda et al. 1984:119 [ref. 6441], Paxton et al. 1989:357 [ref. 12442], Myers 1999:73 [ref. 23965], Ivantsoff & Crowley 1999:2118 [ref. 24783], Allen 2000:85 [ref. 37268], Ivantsoff in Randall & Lim 2000:598 [ref. 25122], Nakabo 2000:543 [ref. 25086], Nakabo 2002:543 [ref. 26001], Choi et al. 2003:216, 543 [ref. 26218], Allen & Adrim 2003:26 [ref. 26830], Myers & Donaldson 2003:615 [ref. 27495], Paxton et al. 2006:704 [ref. 28995], Kimura 2009:47 [ref. 30426], Motomura et al. 2010:80 [ref. 31256], Fricke et al. 2011:369 [ref. 31242], Allen & Erdmann 2012:160 [ref. 31980], Fricke et al. 2014:37 [ref. 33932], Koeda et al. 2016:14 [ref. 35333], Kwun et al. 2017:141 [ref. 37287], Kim et al. 2020:79 [ref. 39118], Sonoyama et al. 2020:38 [ref. 37637], Wada et al. 2021:38 [ref. 38521], Allen & Erdmann 2024:176 [ref. 40796], Toyama et al. 2025:17 [ref. 42086]). Current status: Valid as Atherion elymus Jordan & Starks 1901. Atherionidae. Distribution: Eastern Indian Ocean, western Pacific: Andaman Sea and Christmas Island east to Fiji, north to southern Korea, southern Sea of Japan and Pacific coast of Ibaraki prefecture (Japan), south to New Caledonia and Loyalty Islands. IUCN (2010): Least Concern. Habitat: marine.