(Stimpson, 1858)
Carapace suboval, slightly longer than broad; lateral walls of carapace with two teeth, one at antero-lateral angle, the second at posterior lateral angle; rostrum obscurely trilobate, lateral lobes very small and acute, median one long and styliform and broadly rounded apically, its lateral margins fringed with setae, concavities between rostral lobes clear, but short, hardly reaching marginal rim. Chelipeds heavier but shorter than ambulatory legs, palm moderately swollen; second to fifth pereiopods long and slender; meri with a strong terminal tooth on dorsal margin; dactyli very slightly curved. Male abdomen without fused segments. (Türkay 1995)
Type locality: Hong Kong.
Range: Japan - Sagami Bay and Ise Bay (Sakai, 1938a, 1976), between Htsushima and Ito (Sakai, 1935), Sagami Bay (Sakai, 1965b), Tsushima Strait (Takeda, 1973c), Amakusa-shoto (Yamaguchi et al., 1976), Shiono-misaki (Takeda, 1979a), Manazuru and Tosashimizu (Muraoka, 1998), off Takehara, Seto Inland Sea (Takeda et al., 2000); Korea - Tong-yeong (Kamita, 1941), Seogwipo (Kim, 1973); China - Qingdao, Shandong Peninsula (Shen, 1932), Yantai (Shen, 1936), Hong Kong (Stimpson, 1858b, 1907); Taiwan - Tan-shui river (Ng & Jeng, 1999); 50-100 m.