MacLeay, 1838
Rostrum either simple or two-spined. Eyes without true orbits. Eyestalks very short or sometimes even obscolecent, either concealed beneath a forwardly produced supraocular spine, or sunk in the sides of a huge beak-like rostrum. Sometimes presence of a postocular spine, generally not cupped, or process, but not excavated for the reception of the retracted eye. Basal antennal article truncate-triangular. Third maxillipeds with merus as broad as ischium. Ambulatory legs: dactyl prehensile or subchelate; P3-P5 often disproportionately short compared with P2. Male abdomen with all segments distinct. Female abdomen with all segments distinct, or only four or five segments. (Guinot 1998)
Genera treated:
genus Acanthonyx Latreille, 1828
genus Antilibinia MacLeay, 1838
genus Huenia de Haan, 1839
genus Menaethiops Alcock, 1895
genus Menaethius H. Milne Edwards, 1834
genus Perinia Dana, 1852
genus Pugettia Dana, 1851
genus Sargassocarcinus Ward, 1936
genus Simocarcinus Miers, 1879
genus Xenocarcinus White, 1847