A. Milne Edwards, 1880
Front monodentate, not covering eyestalks and antennules. Orbits lacking, eyestalks immobile, eyes without pigment. No interantennular septum. Palp of external maxillipeds articulating at inner border of merus, exopodite of this same limb with a well developed flagellum. Chelipeds equal. (Türkay 1995)
Species treated:
Cymonomus andamanicus Alcock, 1905
Cymonomus curvirostris Sakai, 1965
Cymonomus japonicus Balss, 1922
Cymonomus sagamiensis Sakai, 1983
Cymonomus umitakae Takeda, 1981