Notomithrax

Notomithrax is a genus of crabs of the family Majidae, containing four species:
 * Notomithrax minor (Filhol, 1885)
 * Notomithrax spinosus (H. Milne-Edwards, 1834)
 * Notomithrax peronii (Miers, 1879)
 * Notomithrax ursus (Herbst, 1788)