(Dana, 1852)
Carapace smooth, regions well defined. Front relatively straight, with a V-shaped median notch, separated from the innerorbital angle by a gap. Orbit with 2 fissures on the dorsal margin. Besides the outerorbital angle the antero-lateral margin with 4 teeth: the first flattened and small, the second obtusely prominent, the third and last dentiform, the third also the most produced.
Chelipeds markedly asymmetrical. Carpus and palm with tubercles on upper and outer surfaces, denser and acuter in the minor chela than in the major one. Palm in both sexes armed with a sharp process on the inner surface. Fingers short, with no gap between them. Ambulatory legs with long setae; merus, carpus, and propodus all armed with acuminate spines along their anterior margins; dactylus also thickly armed with numerous spines on the anterior and posterior margin.
First pleopod of the male curved outer-ventrally and tapering off to a tip. Dorsal lobe of tip bearing a triangular process. Male abdomen narrow and long; third to fifth segments nearly fused. Sutures recognizable; the sixth segment squarish. Telson triangular. Carapace length of the male 5.7 mm, breadth 8.5 mm. (Dai & Yang, 1991)
Type locality: Tuamotu Archipelago.
Range: Palk Strait (Alcock, 1898); Sri Lanka (Alcock, 1898); Andaman Islands (Alcock, 1898); Japan - Tosa Okinoshima (Sakai, 1939), Sagami Bay (Sakai, 1965b), Sagami Bay, Kii Minabe, Tosa Bay, and Amami-shoto (Sakai, 1976a), Manazuru, Nanki Shirahama, Shiono-misaki, Tosa Okinoshima, Tosa Bay, Takara-jima, Okinoerabu-jima, and Yoron-jima (Muraoka, 1998); Taiwan - P'eng-hu (Lin, 1949); China - Paracel Islands (Dai & Yang, 1991); Indonesia - Edam Island (de Man, 1887d); Palau (Takeda, 1976a); Marshall Islands; Kiribati; Hawaiian Islands - Sandwich Island (Dana, 1852), Waikiki Beach and Laysan (Rathbun, 1906); Tuamotu Archipelago or Society Islands (Dana, 1852); Tuamotu Archipelago - Marutea (Guinot, 1968a).