H. Milne Edwards, 1834
Carapace smooth, nearly 1.4 times as broad as long and the lobules rather deeply demarcated. The front is very narrow, being nearly one seventh the greatest width of the carapace, and is divided into two lobes, each of which is deeply separated from the supraorbital angle by a deep V-shaped sinus. The antero-lateral borders are armed with four teeth exclusive of the external orbital angle, the two posterior of which are obtusely pointed and curved forwards. The orbits are complete, the very narrow orbital hiatus being completely filled up by a prolonged lobule from the basal antennal segment.
The wrist bears three or four nodules on outer surface and two obtuse teeth at inner angle; palm weakly compressed and bears four or five nodules on superior border and about six small ones on outer surface. Ambulatory legs are densely fringed with hairs along both edges, the propodus and dactylus are furnished with longitudinal rows of spinules, which are generally concealed by the coarse hairs. (T. Sakai, 1939: 499)
Type locality: Australia.
Range: Red Sea (Klunzinger, 1913); Madagascar - Nosy Bé (Serène, 1984); Seychelles; Persian Gulf (Alcock, 1898, Stephensen, 1945); India; Sri Lanka; Japan - Shimoda (Sakai, 1935), Shimoda, Nanki Shirahama and Nagasaki (Sakai, 1939), Sagami Bay (Sakai, 1965b), from Tokyo Bay to Amami-shoto (Sakai, 1976a), Kushimoto (Miyake, 1983); Taiwan - Su-ao (Miyake, 1938), Su-ao and P'eng-hu (Lin, 1949); China - Guangxi and Paracel Islands (Dai & Yang, 1991); Vietnam (Guinot, 1964b); Australia; Samoa (Alcock, 1898).