Stimpson, 1858
Carapace more than twice as broad as long, it is broadest at the points above the bases of the third ambulatory legs. Surface smooth, with a transverse gastro-cardiac groove, another shallow one is in front of the gastric region. Behind the outer orbital angle or say at the beginning of the antero-lateral margin of carapace, there is an oblique groove curving downwards to the suborbital region. And a small depression is just situated behind the oblique groove on the dorsal surface. Antero-lateral margin strongly arched, the postero-lateral margins converging backwards.
Front narrow, truncate, with a shallow incision at middle and a median groove on dorsal surface.
Buccal cavity divergent backwards. Merus-ischium joint of the third maxilliped broadened distally. Carpus long. Propodus broadened basally. Dactylus long spatulated, articulated to the propodus on the inner side. All segments are furnished with long feathered hairs on the borders.
Chelipeds small and hairy on borders. Hand longer than movable fingers, it bears 6-8 tubercles on the dorsal margin and 4-5 on that of the movable finger. Outer surface of hand with a line of hairs near upper region.
First ambulatory legs small and slender, propodus with a series of spinules on the distal portion of the posterior border, dactylus with 5-6 denticles on the anterior border and a tuft of setae near the apex. Second ambulatory leg longer, merus granulate on the posterior border, propodus is same as that of the first one, dactylus with 5 denticles on the anterior border and a series of spinules on the posterior border, also furnished with a tuft of setae near the apex. Third leg longest, merus very stout. Fourth leg smallest, merus with 4-5 blunt denticles on the posterior border, dactylus with three denticles on the anterior border.
Female abdomen seven-segmented, covering the whole surface of sternum. Second segment with a line of hairs along the distal margin. Seventh segment truncate distally. (Shen, 1937)
Type locality: Hong Kong.
Range: Mozambique - Inhambane (Barnard, 1955); Japan - Nagasaki (Ortmann, 1894a), Sea of Ariake (Miyake, 1961); China - Jiaozhou Bay (Shen, 1937b), Tsangkou (Shen, 1937c), Guangdong and Jiaozhou Bay (Dai & Yang, 1991); Hong Kong (Stimpson, 1858b, 1907, Gee, 1925).