Species that contain: Simenchelys and parasitica [ 4 ] records

dofleini, Simenchelys Franz [V.] 1910:10, Pl. 3 (figs. 1-2) [Abhandlungen der math.-phys. Klasse der K. Bayer Akademie der Wissenschaften v. 4 (Suppl.) (no. 1); ref. 1481] Sagami Bay and Misaki, Sagami Bay, Japan. Syntypes: ZSM [old collection] (1 + 3) destroyed in WWII. Type catalog: Neumann 2006:281 [ref. 28925]. •Synonym of Simenchelys parasitica Gill 1879 -- (Okamura & Machida 1987:107 [ref. 22279], Robins & Robins 1989:214 [ref. 13287], Castle 1990:196 [ref. 13786]). Current status: Synonym of Simenchelys parasitica Gill 1879. Synaphobranchidae: Simenchelyinae. Habitat: marine.

grimaldii, Conchognathus Collett [R.] 1889:124 [2] [Bulletin de la Société Zoologique de France v. 14 (no. 6); ref. 889] Off Graciosa Islands, Fayal, San Jorge, Pico, Florès and Corvo, Azores, northeastern Atlantic, depth 844-2000 meters. Syntypes: MOM (many, not found in 1995). Type catalog: Belloc 1949:3 [ref. 21544]. On p. 2 of separate. •Synonym of Simenchelys parasitica Gill 1879 -- (Blache et al. 1973:223 [ref. 7185], Robins & Robins 1989:214 [ref. 13287], Castle 1990:196 [ref. 13786]). Current status: Synonym of Simenchelys parasitica Gill 1879. Synaphobranchidae: Simenchelyinae. Habitat: marine.

leptosomus, Gymnosimenchelys Tanaka [S.] 1908:2, Pl. 2 (fig. 2) [Journal of the College of Science. Imperial University, Tokyo v. 23 (art. 13); ref. 4321] Off Okinose, Misaki, Sagami Sea, Japan, depth 600 meters. Holotype: ZUMT 1855 (lost). Paratypes: ZUMT 1855 (2, lost). Type catalog: Aizawa et al. 2022:144 [ref. 39647]. •Synonym of Simenchelys parasitica Gill 1879 -- (Sakamoto in Amaoka et al. 1983:69, 175 [ref. 8379], Okamura & Machida 1987:107 [ref. 22279] as leptostomus, Robins & Robins 1989:214 [ref. 13287], Castle 1990:196 [ref. 13786]). Current status: Synonym of Simenchelys parasitica Gill 1879. Synaphobranchidae: Simenchelyinae. Habitat: marine.

parasiticus, Simenchelys Gill [T. N.] in Goode & Bean 1879:27 [Bulletin of the Essex Institute v. 11; ref. 5605] Banquereau, Canada [or Newfoundland Banks off Massachussetts, U.S.A.], depth 300 fathoms. Lectotype: USNM 21669. Paralectotypes: USNM 21673 (2), 21675 (1, lost), 21677 (1), 21872 (1). Type catalog: Smith 1994:38 [ref. 21917]. Author is T. N. Gill. Species should be spelled parasitica when in Simenchelys. Lectotype selected by Robins & Robins 1989:217 [ref. 13287]. •Valid as Simenchelys parasitica Gill 1879 [sometimes as parasiticus] -- (Blache et al. 1973:223 [ref. 7185], Ida in Okamura et al. 1982:67, 321 [ref. 8256], Sakamoto in Amaoka et al. 1983:69, 175 [ref. 8379], Asano in Masuda et al. 1984:26 [ref. 6441], Machida in Okamura & Kitajima 1984:79, 314 [ref. 8057], Saldanha & Bauchot in Whitehead et al. 1986:590 [ref. 13676], Castle 1986:190 [ref. 5644], Edwards & Glass 1987:626 [ref. 9166], Okamura & Machida 1987:107 [ref. 22279], Scott & Scott 1988:90 [ref. 25518], Paxton et al. 1989:108 [ref. 12442], Robins & Robins 1989:214 [ref. 13287], Paulin et al. 1989:71 [ref. 24556], McAllister 1990:48 [ref. 14674], Castle 1990:196 [ref. 13786], Shinohara et al. 1996:157 [ref. 26605], Sulak & Shcherbachev 1997:1161 [ref. 22986], Santos et al. 1997:21 [ref. 23531], Arruda 1997:59 [ref. 24952], Saldanha & Biscoito 1997:195 [ref. 24962], Chen & Mok 1999:60 [ref. 24093], Smith 1999:1661 [ref. 24661], Nakabo 2000:212 [ref. 25086], Compagno in Randall & Lim 2000:585 [ref. 25122], Chen & Mok 2001:79 [ref. 25465], Hutchins 2001:17 [ref. 25847], Shinohara et al. 2001:292 [ref. 25995], Nakabo 2002:212 [ref. 26001], Moore et al. 2003:173 [ref. 27076], Shinohara et al. 2005:400 [ref. 28370], Mundy 2005:129 [ref. 28379], Paxton et al. 2006:263 [ref. 28995], Melo 2007:315 [ref. 29141], Smith 2008:163 [ref. 30621], Fricke et al. 2009:18 [ref. 30213], Melo et al. 2009:13 [ref. 30460], Costa & Mincarone 2010:298 [ref. 37483], Springer & Johnson 2015:6011[ref. 33937], Ho et al. 2015:179 [ref. 34130], Smith & Stewart 2015:246 [ref. 34234], Afonso et al. 2016:13, 279 [ref. 36199], Smith 2016:1652 [ref. 34556], Fricke et al. 2018:42 [ref. 35805], Brown et al. 2019:154 [ref. 36444], Carneiro et al. 2019:59 [ref. 37250], Page et al. 2023:51 [ref. 40505]). Current status: Valid as Simenchelys parasitica Gill 1879. Synaphobranchidae: Simenchelyinae. Distribution: Circumglobal in temperate seas, but not in eastern Pacific. Habitat: marine.