Alcock & Anderson, 1899
Carapace about as broad as long, smooth; front with 3 lobes of which the middle one is bifid at tip; antero-lateral borders with 4 teeth, last one spiniform and well separated from the others. Basal joint of antenna short but still longer than broad and freely movable; flagellum moderately long, situated in a narrow orbital hiatus. Chelipeds somewhat heterochelous, smooth except for a sharp tooth at the inner angle of the carpus and an upper distal spine of the palm. Swimming leg naked. (Türkay 1995)
Portunidae with eyestalks of normal length; carapace relatively narrow, not convex in both directions; 4 antero-lateral teeth; basal joint of second antenna broad; chelipeds and legs both long, one pair of legs as long as chelipeds; last legs typical swimming paddles, dactyl oval; ambulatory legs fairly stout. (Davie 1999)
Type locality: Andaman Sea.
Range: Andaman Sea (Alcock & Anderson, 1899, Alcock, 1899a, c); Nicobar Islands (Doflein, 1904); Japan - Tosa Bay (Sakai, 1976a), Kumano-nada (Miyake, 1983); South China Sea - Tungsha Island (Ng, 2000a); Philippines - Calagula Islands (Ng, 2000a); Indonesia - Kepulauan Kai (Moosa, 1996); Australia - mid-eastern and south-east Queensland (Davie & Short, 1989); New Caledonia (Stephenson, 1972a, Moosa, 1996, Ng, 2000a); Vanuatu (Ng, 2000a); 150-780 m.