Pachystomias Günther [A.] 1887:210 Masc. Echiostoma microdon Günther 1878. Type by monotypy. •Valid as Pachystomias Günther 1887 -- (Morrow in Morrow & Gibbs 1964:374 [ref. 6962], Kawaguchi & Moser 1984:171 [ref. 13642], Gibbs in Whitehead et al. 1984:361 [ref. 13675], Fujii in Masuda et al. 1984:51 [ref. 6441], Fink 1985:11 [ref. 5171], Gibbs 1986:242 [ref. 5655], Paxton et al. 1989:202 [ref. 12442], Harold 1999:1913 [ref. 24741], Mecklenburg et al. 2002:222 [ref. 25968], Harold 2003:909 [ref. 27001], Paxton et al. 2006:450 [ref. 28995], Kenaley et al. 2008:254 [ref. 30630], Parin et al. 2014:149 [ref. 33547], Kenaley & Stewart 2015:530 [ref. 34248], Schnell & Johnson 2017:1 [ref. 35193], Brown et al. 2019:159 [ref. 36444]). Current status: Valid as Pachystomias Günther 1887. Stomiidae: Melanostomiinae.