geneionema, Gobius Hilgendorf [F. M.] 1879:108 [Sitzungsberichte der Gesellschaft Naturforschender Freunde zu Berlin 1879; ref. 21467] Tokyo Bay, Japan. Holotype (unique): ZMB 10653. •Valid as Sagamia geneionema (Hilgendorf 1879) -- (Lindberg & Krasyukova 1975:394 [ref. 7348], Akihito in Masuda et al. 1984:279 [ref. 6441], Nakabo 2000:1206 [ref. 25182], Shinohara et al. 2000:183 [ref. 25987], Shimizu 2001:39 [ref. 25799] as genetonema, Nakabo 2002:1206 [ref. 26193], Choi et al. 2003:400, 664 [ref. 26218], Shibukawa & Iwata 2013:47 [ref. 32580], Matsui et al. 2014:5 [ref. 33344], Kim et al. 2020:175 [ref. 39118], Sonoyama et al. 2020:107 [ref. 37637], Parenti 2021:288 [ref. 38603]). Current status: Valid as Sagamia geneionema (Hilgendorf 1879). Oxudercidae: Gobionellinae. Distribution: Northwestern Pacific: Korea and Japan. Habitat: marine.