(Dana, 1851)
Carapace with transverse irregular ridges or lines on cardiac and intestinal regions, transverse ridges on branchial regions rather straight, cervical groove deeply cut and long in branchial regions; lateral margins sharply keeled throughout their length, parallel or slightly diverging backwards, antero-lateral margin perfectly straight. Epistome well defined. Upper border of buccal cavern straight, not confluent with epistome, its antero-lateral corner acutely conical, no sharp keel extending from that corner backwards. Sternite of the chelipeds not pubescent. Lower margin of merus of ambulatory legs not at all or very indistinctly dentate at their distal extremity. (Türkay 1995)
Type locality: Sandwich Island, Hawaiian Islands.
Range: Red Sea; east coast of Africa; Mauritius (Ortmann, 1894a); Chagos Archipelago - Salomon Islands (Ward, 1942b); Laccadive Islands (Alcock, 1900b); Andaman Islands (Alcock, 1900b); Nicobar Islands (Alcock, 1900b); Japan - Northern Daito-jima (Sakai, 1939), Amami-shoto, southern Okinawa, N. and S. Daito-jima (Sakai, 1976a); Taiwan; China - Paracel Islands (Chen, 1975, Dai & Yang, 1991); Bertrand Islands (Sendler, 1923); Vanuatu - Immer (Sendler, 1923); Samoa (Ortmann, 1894a); Hawaiian Islands - (Edmondson, 1959), Sandwich Island (Dana, 1852), Oahu (Rathbun, 1906); Line Islands - Palmyra and Tabuaeran (Edmondson, 1923, 1959); Tuamotu Archipelago - Makatea (Sendler, 1923).