(Rathbun, 1902)
The carapace and thoracic appendages are quite naked, the former is transversely oval in outline and the front relatively broad and divided into two lobes, which are straight and microscopically granulated, each of which is externally separated from the supraorbital border by a small notch. The antero-lateral borders are cut into four teeth, of which the first is small and rounded, the second and third are subequal and somewhat salient, the last is very small but acuminate. The external orbital angle is also very small. The dorsal surface of carapace is convex and the regions almost indistinct besides the usual groove extending from the median frontal sinus to the gastric region. The surface near the anterior and antero-lateral borders is finely granulated, otherwise it is glabrous. In the female paratype, the granulation seems to be more pronounced and a curved ridge extends from the last antero-lateral tooth toward the epibranchial surface.
Chelipeds are slightly asymmetrical, the right one being a little larger; the arm is short and high, its superior border crested and its inner surface very flat. Wrist is thickly granulated and has an indistinct groove along the antero-external border; palm dorsally slightly carinate and granulated but its external surface near the inferior border is smooth. Fingers are nearly as long as the palm, sharply toothed along the cutting edges, their apices crossing each other. Ambulatory legs are very slender, sparingly haired, their anterior borders are microscopically granulated; dactyli are as long as or even longer than the propodi. (T. Sakai, 1939: 546)
Type locality: Nallandu, Maldives, 43 m.
Range: South Africa - off Durban (Serène, 1964); Madagascar (Serène, 1984); Seychelles - Seychelles, Amirante and Providence Islands (Rathbun, 1911), Coëtivy Islands (Serène, 1984); Réunion (Serène, 1984); Saya de Malha Bank (Rathbun, 1911); Maldives - Nallandu (Rathbun, 1902b); Japan - Sagami Bay (Sakai, 1939, 1965), Kii Province (Takeda & Koyama, 1974), Sagami Bay and Tosa Bay (Sakai, 1976a), Mage-jima, Kagoshima Prefecture (Takeda, 1977b), Shiono-misaki (Takeda, 1979a), Kumano-nada (Sakai, 1983), Oshima Passage, Amami-Oshima (Takeda, 1989), Suruga Bay (Takeda, 1997); Korea - Cheju-do (Kim & Chang, 1985); East China Sea (Takeda & Miyake, 1968c); Palau (Takeda, 1976a); 36-460 m.