micracanthus, Xenoceratias Regan [C. T.] & Trewavas [E.] 1932:55, Fig. 81 [Dana Report No. 2; ref. 3682] Eastern Atlantic, 0°31'S, 11°02'W, station 4000, depth about 2000 meters (4000 meters of wire out). Holotype (unique): ZMUC P9250. Type catalog: Nielsen 1974:87 [ref. 9588]. •Synonym of Melanocetus johnsonii Günther 1864 -- (Maul 1973:667 [ref. 7171] as johnsoni, Bertelsen 1990:492 [ref. 15654] as johnsoni, Pietsch 2009:362 [ref. 30766]). Current status: Synonym of Melanocetus johnsonii Günther 1864. Melanocetidae. Habitat: marine.