Stimpson, 1858
Carapace subrounded quadrangular, flattened, smooth and glossy. Postfrontal lobes produced, cardiac and intestinal regions surrounded by fine grooves. Front broad, anterior margin concave medially, forming 2 rounded lobes. Dorsal orbital border without suture. Outerorbital angle triangular, slightly directed out- and forwards, posteriorly followed by 2 emarginations which divide the antero-lateral margin into 3 lobes. The two lateral margins of the carapace almost parallel. Posterior margin sensibly concave. Ventral orbital crest serrated, inner ventral orbital angle triangular. Antenna excluded from the orbit. Merus of the third maxillipeds with the antero-external angle produced, exopodite very broad.
Chelipeds short. Merus smooth, its basal half with tomentum on the dorsal border. Carpus smooth, its inner-distal angle bluntly triangular. Inner surface of the palm smooth; in the male its outer surface densely covered with long hairs at the base of two fingers, which are not gaping. Ambulatory legs slender, dorsal border of the merus with long hairs at its base, carpus smooth; propodus of the first 3 ambulatory legs with tomentum on the distal half of the posterior border. Propodus of the last legs broadened distally. Each dactylus with tomentum on its posterior border, claw-shaped at the tip.
First pleopod of the male almost straight, with a distal chitinous process directed dorsally outwards, and a subdistal rounded lobe on the dorsal surface. Abdomen of the male triangular; telson elongate-elliptical. Abdomen of the female rounded and large; telson triangular, bluntly produced at the distal margin. Carapace length of the male 10.6 mm, breadth 11.7 mm; of the female, length 8.7 mm, breadth 9 mm. (Dai & Yang, 1991)
Type locality: Kikaishima, Okinawa, Japan.
Range: Madagascar - Fort-Dauphin (Crosnier, 1965); Mauritius (Michel, 1964); Maldives (Borradaile, 1903a); Sumatra - Banda Aceh; Japan - Kikaishima (Stimpson, 1858b, 1907), Hachijo-jima and Ishigaki-jima (Sakai, 1976a); Taiwan; China - Paracel Islands (Chen, 1980, Dai & Yang, 1991); Indonesia - Noordwachter Island (de Man, 1888d), Tanahjampea and Geser Island (Tesch, 1918a); New Caledonia; Fiji (Miers, 1886); Line Islands - Palmyra and Tabuaeran (Edmondson, 1923).