mestomyllon, Cyphocharax Vari [R. P.] 1992:77, Fig. 54 [Smithsonian Contributions to Zoology No. 529; ref. 19020] Cachoeira de Bicho-Açu (about 0°20'S, 65°29[or 20]'W), Rio Marauiá, Rio Negro basin, Amazonas, Brazil. Holotype: MZUSP 41755. Paratypes: MZUSP 41756 (24), USNM 309289 (24, 2 c&s). Type catalog: Oyakawa 1996:463 [ref. 23140]. •Valid as Cyphocharax mestomyllon Vari 1992 -- (Vari in Reis et al. 2003:55 [ref. 27061], Wosiacki & Miranda 2014:632 [ref. 33098], Melo 2017:118 [ref. 35213], Bortolo et al. 2018:350 [ref. 36016]). Current status: Valid as Cyphocharax mestomyllon Vari 1992. Curimatidae. Distribution: Marauiá River, Negro River basin, Brazil. Habitat: freshwater.