gracilis, Leptostomias Regan [C. T.] & Trewavas [E.] 1930:59, Fig. 38 [Danish Dana Expedition 1920-22 in the North Atlantic and the Gulf of Panama, Oceanographical Reports. v. 2 (no. 6); ref. 3681] North Atlantic. Syntypes: BMNH 1929.7.6.10 (1) Dana station 1160 (15°50'N, 26°32'W); ZMUC P201994-96 (3) Dana station 1162 (13°35'N, 30°11'W). Type catalog: Nielsen 1974:20 [ref. 9588]. •Questionably a synonym of Leptostomias longibarba Regan & Trewavas 1930 -- (Gibbs in Whitehead et al. 1984:356 [ref. 13675]). •See also Pequeño 1989:31 [ref. 14125]. •Valid as Leptostomias gracilis Regan & Trewavas 1930 -- (Gibbs 1986:240 [ref. 5655], Gibbs & Barnett 1990:325 [ref. 14915], Harold 1999:1913 [ref. 24741], Harold 2016:1814 [ref. 34568], Sutton et al. 2020:114 [ref. 37832]). Current status: Valid as Leptostomias gracilis Regan & Trewavas 1930. Stomiidae: Melanostomiinae. Distribution: Circumglobal. Habitat: marine.