(Jacquinot, 1852)
The carapace is distinctly divided into regions which are not convex, but are thickly covered with minute granules of uniform size; the interregional furrows are narrow and devoid of granules. The antero-lateral border is armed with four bluntly crested teeth; the first two are subtruncated, whereas the following two are sharp, each bearing its tip anteriorly. The chelipeds are unequal and provided with granules like the carapace; the palm is crested on its upper border in two rows. The ambulatory legs are bicarinate on the upper borders and surfaces of the carpus and propodus each with a longitudinal cavity. (Takeda & Miyake, 1968a: 1)
Type locality: Guam, Mariana Islands.
Range: Coëtivy Islands (Rathbun, 1911); Maldives - (Guinot, 1968a), Minikoi Atoll (Borradaile, 1902b); Chagos Archipelago (Rathbun, 1911); Nicobar Island (Sankarankutty, 1962); Japan - Amami-Oshima and Ishigaki-jima (Takeda & Miyake, 1968a); Guam (Jacquinot, 1852); Caroline Islands - Ponape (Rathbun, 1907), Kusaie (Miyake, 1939); Kiribati - Apamama (Balss, 1938a); Tahiti (Guinot, 1968a); Tuamotu Archipelago - Makemo (Rathbun, 1907), Hikueru (Forest & Guinot, 1961).