Latreille, 1829
Carapace depressed, rectangular or trapezoid, breadth always exceeding length; front narrow, depressed; lateral margins parallel or posteriorly convergent, number of antero-lateral teeth variable, may range from 1-4. Third maxillipeds with subrectangular merus smaller than or subequal to ischium, breadth of former exceeding length; length on ischium exceeding breadth. Chelipeds homochelous or nearly so; merus triangular in cross section; palm large and elongate; dactylus and immovable finger never obscured by hairs, spoon-tipped, differentiated tooth present on dactylus and frequently also on immovable finger of males; in females the chelae are much smaller and bear no teeth on cutting edges. Third and fourth pair of pereiopods clearly larger than remaining ones, fifth smallest; meri long, triangular in cross section, upper margins with distal subterminal spine, which may be concealed in hair. (Türkay 1995)
Type species: Goneplax transversus Latreille, 1817.
Subgenera treated:
subgenus Macrophthalmus Latreille, 1829
subgenus Mareotis Barnes, 1967
subgenus Mopsocarcinus Barnes, 1967
subgenus Paramareotis Komai et al., 1995
Other species treated:
Macrophthalmus abbreviatus Manning & Holthuis, 1981
Macrophthalmus banzai Wada & Sakai, 1989
Macrophthalmus barnesi Serène, 1971
Macrophthalmus brevis (Herbst, 1804)
Macrophthalmus ceratophorus Sakai, 1969
Macrophthalmus crinitus Rathbun, 1913
Macrophthalmus japonicus (de Haan, 1835)
Macrophthalmus latreillei (Desmarest, 1822)
Macrophthalmus philippinensis Serène, 1971
Macrophthalmus telescopicus (Owen, 1839)