microcephalus, Chiasmodon Norman [J. R.] 1929:539, Fig. 8b [Annals and Magazine of Natural History (Series 10) v. 3 (no. 17); ref. 15913] Western South Atlantic, 39°50'30"S, 36°23'00"'W, depth 0-1500 meters. Holotype: BMNH 1930.1.12.1062 [?1060]. Paratypes: (3) BMNH 1930.1.12.1060-61 (2). •Synonym of Chiasmodon bolangeri Osório 1909 -- (Krefft 1973:452 [ref. 7166], Johnson & Keene 1986:731 [ref. 6303], Johnson & Keene 1990:899 [ref. 19355]). •Synonym of Chiasmodon niger Johnson 1864 -- (Prokofiev 2008:212 [ref. 29559], Prokofiev & Kukuev 2009:901 [ref. 30607], Prokofiev 2010:507 [ref. 31018]). •Valid as Chiasmodon microcephalus Norman 1929 -- (Melo 2009:594 [ref. 30374], Melo & Stewart 2015:1448 [ref. 34290], Nión et al. 2016:51 [ref. 35565], Sutton et al. 2020:284 [ref. 37832]). Current status: Valid as Chiasmodon microcephalus Norman 1929. Chiasmodontidae. Distribution: Southern temperate seas. Habitat: marine.