Diagnosis
Pereopod 5 carpus long, subrectangular. Pereopods 5–7 dactyli lacking accessory spines on anterior margin. Uropods 1 and 2 peduncle with acute interamal process, without distoventral corona of cuticular spines. Uropod 3 peduncle long, broad proximally, narrow distally. Telson entire, without rows of hooks or patches of denticles (Myers & Lowry, 2003).
Included genera
Bathyphotis Stephensen, 1944; Coxischyrocerus Just, 2009; Isaeopsis K.H. Barnard, 1916; Ischyrocerus Krøyer, 1838; Jassa Leach, 1814; Microjassa Stebbing, 1899; Myersius gen. nov.; Neoischyrocerus Conlan, 1995; Paradryope Stebbing, 1888; Parajassa Stebbing, 1899; Pseudischyrocerus Schellenberg, 1931; Ruffojassa Vader & Myers, 1996; Scutischyrocerus Myers, 1995; Tropischyrocerus Just, 2009; Ventojassa J.L. Barnard, 1970; Veronajassa Vader & Myers, 1996.