Species that contain: Synaphobranchus and capensis [ 2 ] records

capensis, Diastobranchus Barnard [K. H.] 1923:441 [Annals of the South African Museum v. 13 (pt 8, no. 14); ref. 191] Off Cape Point, South Africa, depth 470 fathoms [860 meters]. Syntypes: SAM 12766 (1), 12792 (1); BMNH 1924.9.24.1 (1). Moore et al. 2003:172-173 [ref. 27076] questionably refer North Atlantic specimens to this species. •Valid as Synaphobranchus capensis (Barnard 1923) -- (Robins & Robins 1989:229 [ref. 13287], Smith 1999:1661 [ref. 24661], Smith 2003:723 [ref. 26989]). •Valid as Diastobranchus capensis Barnard 1923 -- (Castle 1986:189 [ref. 5644], Paxton et al. 1989:107 [ref. 12442], Paulin et al. 1989:71 [ref. 24556], Shcherbachev et al. 1989:165, 166 [ref. 36134], Castle in Amaoka et al. 1990:96 [ref. 16024], Gon 1990:102 [ref. 21680], Gomon et al. 1994:195 [ref. 22532], Sulak & Shcherbachev 1997:1167 [ref. 22986], Pakhorukov 2001:377 [ref. 25409], Hutchins 2001:17 [ref. 25847], Brickle & Laptikhovsky 2002:493 [ref. 26485], Menezes in Menezes et al. 2003:34 [ref. 27192], Moore et al. 2003:172 [ref. 27076], Karmovskaya 2003:438 [ref. 27168], Duhamel et al. 2005:90 [ref. 32059], Paxton et al. 2006:261 [ref. 28995], Melo 2007:315 [ref. 29141], Melo et al. 2009:12 [ref. 30460], Smith 2008:161 [ref. 30621], Fricke et al. 2011:351 [ref. 31242], Svendsen et al. 2011:255 [ref. 31757], Smith & Stewart 2015:241 [ref. 34234], Smith 2016:1650 [ref. 34556], Williams et al. 2018:99 [ref. 36359], Mecklenburg et al. 2018:57 [ref. 36370], Kim et al. 2021:70 [ref. 39117], Page et al. 2023:50 [ref. 40505]). Current status: Valid as Diastobranchus capensis Barnard 1923. Synaphobranchidae: Synaphobranchinae. Distribution: Circumglobal, mostly in Southern Hemisphere in temperate waters; one Arctic record. Habitat: marine.

danae, Synaphobranchus Bruun [A. F.] 1937:13, Pl. 1 (figs. 1, 3) [Dana Report No. 9; ref. 15270] East of New Zealand, Dana station 3644. •Synonym of Diastobranchus capensis Barnard 1923 -- (Castle 1986:189 [ref. 5644], Robins & Robins 1989:229 [ref. 13287], Gon 1990:102 [ref. 21680], Gomon et al. 1994:196 [ref. 22532]). Current status: Synonym of Diastobranchus capensis Barnard 1923. Synaphobranchidae: Synaphobranchinae. Habitat: marine.