steindachneri, Hypoptychus Franz [V.] 1910:8, Pl. 5 (fig. 28) [Abhandlungen der math.-phys. Klasse der K. Bayer Akademie der Wissenschaften v. 4 (Suppl.) (no. 1); ref. 1481] Fukuura, Japan. Holotype (unique): ZSM [old collection] destroyed in WW II. Type catalog: Neumann 2006:276 [ref. 28925]. •Synonym of Hypoptychus dybowskii Steindachner 1880 -- (Lindberg & Krasyukova 1975:201 [ref. 7348], Dyldin & Orlov 2017:56 [ref. 35138]). Current status: Synonym of Hypoptychus dybowskii Steindachner 1880. Hypoptychidae. Habitat: marine.