monoclonus, Eustomias Regan [C. T.] & Trewavas [E.] 1930:105, Figs. 95b, 97 [Danish Dana Expedition 1920-22 in the North Atlantic and the Gulf of Panama, Oceanographical Reports. v. 2 (no. 6); ref. 3681] Off St. Croix Island, Caribbean Sea, 17°54'N, 64°54'W, Dana station 1186, depth 1000 meters depth (2000 meters wire out). Holotype (unique): ZMUC P201905. Type catalog: Nielsen 1974:17 [ref. 9588]. •Synonym of Eustomias dendriticus Regan & Trewavas 1930 -- (Parin & Pokhil'skaya 1974:333 [ref. 7527], Gibbs & Barnett 1990:315 [ref. 14915], Clarke 1999:1007 [ref. 24186]). •Valid as Eustomias monoclonus Regan & Trewavas 1930 -- (Harold 2003:911 [ref. 27001], McEachran & Fechhelm 2005:17 [ref. 28815], Harold 2016:1814 [ref. 34568], Fricke et al. 2018:68 [ref. 35805], Page et al. 2023:88 [ref. 40505]). Current status: Valid as Eustomias monoclonus Regan & Trewavas 1930. Stomiidae: Melanostomiinae. Distribution: Tropical and warm temperate Atlantic and southwestern Indian Ocean. Habitat: marine.