hachirogatensis, Arctoscopus japonicus Hatai [K.] 1955:29, Figs. 7-8 [Records of Oceanographic Works in Japan v. 2 (no. 3); ref. 12274] Hachiro-gata, Akita Prefecture, Japan. Holotype (unique): Dept. Geol. Tohuku Univ., Sendai, Reg. No. P-116. Subspecies hachirogatensis is based on an otolith of a recent species. •Synonym of Arctoscopus japonicus (Steindachner 1881) -- (Mecklenburg 2003:1 [ref. 27305], Dyldin & Orlov 2017:186 [ref. 35257]). Current status: Synonym of Arctoscopus japonicus (Steindachner 1881). Trichodontidae. Habitat: marine.