H. Milne Edwards, 1853
Carapace rounded quadrangular, convex, front and hepatic regions depressed. Epigastric region with 6 symmetrical granulated tubercles. Gastric and cardiac regions well defined. Front with 4 acute teeth. Antero-lateral margin with 4 sharp teeth; the last one small, extending to a ridge inwards. Along the postero-lateral margin is another ridge.
Chelipeds larger in the male than in the female. Merus with a subdistal spine on its dorsal border. Carpus with a sharp spine on the inner-distal angle. Palm and the basal portion of the fingers thickly covered with tomentum on both the inner and the outer surfaces. Ambulatory legs depressed. Carpus and propodus of the first 3 legs with setae on the dorsal borders; in the last legs with setae on both the dorsal and the ventral borders.
First pleopod of the male stout, distal chitinous process short and small, slightly curved dorsally outwards. Abdomen triangular, in the female rounded and large. Carapace length of the male 54.6-61 mm, breadth 61-67.3 mm; of the female, length 57.2 mm, breadth 60.1 mm. (Dai & Yang, 1991)
Type locality: China.
Range: Northern part of Europe; Portugal - Tagus estuary (Cabral & Costa, 1999); China - (H. Milne Edwards, 1853), Liaodong Peninsula, Bo Hai, and Shandong Peninsula (Shen, 1932), Dairen (Sakai, 1939), Haichow, Yangchow, Suzhou, Shanghai, Kashing, Fuzhou, and Xiamen (Shen, 1940b); Korea - (Sakai, 1939, 1976), Heian-hokudo, Heian-nando, Kokai-do, Keiki-do, Kogen-do, Chusei-nando and Zenra-nando (Kamita, 1941), Ganghwa Island (Kim, 1970), Seondu Ri (Kim, 1973); Taiwan (Sakai, 1976a).