Subgenus Brienomyrus (Brevimyrus),
Body moderately deep, head blunt, about as long as deep, parabolic in profile; pectoral fin extends to tip of pelvic fin or beyond; scaled lobes of caudal fin rounded, quite short, membranes long, obtusely pointed.
Monospecific: Brienomyrus niger , Brienomyrus (Brevimyrus) niger.