
Stebbing, 1906: 226.
Schellenberg, 1926: 336.
1926a. 224.
Pirlot, 1934: 172.
“Sideplates very shallow. Antenna 1, peduncle short, flagellum long, accessory flagellum rather long. Antenna 2 longer than antenna 1. Mandibles, cutting edge broad, denticulate, accessory plate on both mandibles, spine-row of 2 spins, palp very long, 3rd joint linear, much shorter than 2nd. Maxilla 1, outer plate with 8 long spines, palp with 7 spine-teeth on distally widened 2nd joint Maxilla 2, inner plate fringed on inner margin, rather shorter than outer. Maxillipeds inner plates small, conical, setiferous, outer small on a large base, with few fringing spines, palp long. Gnathopods 1 and 2 simple, 5th and 6th joints long, narrow. Peraeopods 1 and 2 as in Pardalisca, but rather more slender Peraeopods 3–5 elongate, finger stiliform Uropod 1, rami equal; uropod 2, outer ramus much the shorter; uropod 3, rami subequal, foliaceous. Telson deeply cleft.”
—Stebbing.

One genus and species has been recorded from New Zealand by Barnard (1930).
Synopioides macronux Stebbing, 1888.
