MacLeay, 1838
Dorsal regions of the carapace distinct, sometimes strongly delineated, sometimes obliterated with smooth or granular surfaces. Antero-lateral margins convex, continued as far as the exorbital angles, without crest joining the buccal frame, and noticeably separated from the postero-lateral ones that are concave. Behind the exorbital angles, presence of four antero-lateral teeth, slightly projecting, but sometimes more numerous, and sometimes subdivided into as many as ten teeth. Front nearly straight or bilobed, generally with a median fissure and a lateral fissure separating the supraorbital angles, and without a marginal crest. Antennules folded transversely. Basal article of the antennae broad and short; antennal flagellum included in the orbit. Chelipeds always very strong, subequal and similar, or unequal and dissimilar, with a surface either smooth or granular or even coarsely tuberculate. Ambulatory legs generally rounded in section, with smooth or granular surfaces, and sometimes carinated on the margins of some articles. (Guinot 1998)
Genera treated:
genus Demania Laurie, 1906
genus Euryxanthops Garth & Kim, 1983
genus Lachnopodus Stimpson, 1858
genus Leptodius A. Milne Edwards, 1863
genus Lioxanthodes Calman, 1909
genus Macromedaeus Ward, 1942
genus Metaxanthops Serène, 1984
genus Nanocassiope Guinot, 1967
genus Neoxanthias Ward, 1933
genus Neoxanthops Guinot, 1968
genus Paraxanthias Odhner, 1925
genus Xanthias Rathbun, 1897