elongatus, Stichaeus Sakamoto [K.] 1930:15, Fig. 1 [Journal of the Imperial Fisheries Institute v. 26; ref. 16327] Toyama Bay, Japan. Holotype (unique): whereabouts unknown. •Synonym of Stichaeus grigorjewi Herzenstein 1890 -- (Lindberg & Krasyukova 1975:59 [ref. 7348], Mecklenburg & Sheiko 2004:5 [ref. 27604], Parin et al. 2014:451 [ref. 33547]). •Synonym of Dinogunellus grigorjewi (Herzenstein 1890). Current status: Synonym of Dinogunellus grigorjewi (Herzenstein 1890). Stichaeidae: Stichaeinae. Habitat: marine.