Ortmann, 1892
Length of carapace about 0.65 times its width, its surface tuberculated, clypeiform expansions with seven sharp teeth around free margin of each of them, expansions weakly developed, ambulatory legs nearly uncovered; front composed of two median blunt teeth, separated by a U-shaped deep sinus. The longitudinal septum of the prolongated portion of the endostome is low and entirely concealed by the lamellar processes of the first pair of maxillipeds. (Türkay 1995)
Type locality: Tokyo Bay, Japan.
Range: Red Sea - (Türkay, 1986), Ras el Aswad-Jeddah (Galil, 1997a); south Yemen (Türkay, 1986); Kenya - Mombasa (Galil, 1997a); South Africa - Algoa Bay (Barnard, 1947), Algoa Bay and Portuguese East Africa (Barnard, 1950), Algoa Bay and Kentani coast (Galil, 1997a); Pakistan - Mekran (Galil, 1997a); Bay of Bengal - (Alcock & Anderson, 1894a, Galil, 1997a), Madras coast (Alcock, 1896); Japan - Tokyo Bay (Ortmann, 1892), Shimoda (Sakai, 1935), Sagami Bay, Shimoda, Nanki Shirahama, Tosa Bay, off Miyazaki and Nagasaki (Sakai, 1937a), Sagami Bay (Sakai, 1965b), Tokyo Bay, Sagami Bay, Izu Peninsula, Shima Peninsula, Kii Peninsula, Tosa Bay, coast of Miyazaki and Nagasaki (Sakai, 1976a), Ashizuri-misaki (Miyake, 1983), Nagasaki and Misaki (Galil, 1997a); Taiwan - Chi-lung (Lin, 1949); Philippines - near Lubang Island (Serène & Vadon, 1981); Australia - off Cape Moreton (Campbell, 1971), Rottnest Island, W.A., and Cape Moreton (Jones, 1989), Cape Moreton (Galil, 1997a); 30-380 m.