Stebbing, 1906: 662.

“Body usually more or less depressed. Pleon small. Sideplates usually small and often not in continuity. Antenna 1 and 2 of variable proportions. with or without accessory flagellum. Mouthparts generally normal, except that mandibular palp is not always 3-jointed, and the inner plate of maxilla 1 is sometimes evanescent. Gnathopods 1 and 2 variable in character and relative proportions Peraeopods 1 and 2 usually glandular. Peraeopod 5 the longest. Pleopods often with peduncle internally expanded. Uropod 1 biramous. Uropod 2 biramous or uniramous. Uropod 3 small, weakly biramous, uniramous, or even without rami. Telson simple, sometimes lobate.”