(de Haan, 1833)
Big size. Carapace slightly more than two-thirds as long as broad. Surface naked. Two antero-lateral teeth, behind the exorbital tooth. All these teeth spiniform in the young and becoming blunt and obscure or even completely lacking in large adults. Front broad, truncate. Chelipeds varying in length with regard to sex and age, the chela becoming extremely elongated in large males; palm with a tubercular subdistal tooth on the inner surface; fingers without black colouration; inner margin of carpus with one tooth; lower border of merus without subdistal spinules. Ambulatory legs thin and elongate, with short few hairs; dactylus of P5 lanceolate. (Guinot 1998)
Type locality: Japan.
Range: Dar es Salaam (Sankarankutty & Subramanian, 1976); South Africa - (Grindley, 1961), off Kowie (Stebbing, 1905), Portuguese East Africa and Algoa Bay to Tugela River mouth (Barnard, 1950); Madagascar - Mahajanga and Toliara (Guinot, 1989a); Gulf of Martaban (Alcock, 1900b); Andaman Sea (Alcock, 1900b); Japan - (de Haan, 1833, Chen, 1984), Sagami Bay, Nagasaki, and Kochi (Ortmann, 1894a), north-west of Niigata, Iro-zaki, Omae-zaki, Owase, Shingu, Shiono-misaki, Tanabe, Suno-saki, Kii Strait, Suruga Bay, Miyazaki Prefecture, Kochi, Goto-retto, Tsushima, Iki, Oki, Wakasa Bay, Mikuni, Toyama Bay, mouth of Mogami-gawa, and Oga (Yokoya, 1933), Manazuru (Sakai, 1935), Sagami Bay, Ise Bay, Nanki Shirahama, Gobo, Kii Tatsugahama, Tosa Bay and Nagasaki (Sakai, 1939), Sagami Bay (Sakai, 1965b), north off Tsushima (Takeda, 1973), entire coasts from Hakodate to Kyushu (Sakai, 1976a), Yamagata Prefecture (Suzuki S., 1979), off Kochi (Miyake, 1983), Tosa Bay (Baba, 1986), Hakodate (Komai et al., 1992); Korea - Yeosu, Pusan and Ulsan (Kamita, 1941), Cheju-do (Kim, 1970), Cheju-do and Hae-undae (Kim, 1973); China - Shaotsun, Fuzhou, and Xiamen, Fujian Province (Shen, 1940b), Guangdong, Fujian and Zhejiang (Dai & Yang, 1991); Taiwan - Tingch'ieting (Lin, 1949); East China Sea (Takeda & Miyake, 1968c, Takeda, 1975a, Chen, 1984); South China Sea (Serène & Lohavanijaya, 1973, Chen, 1984); Gulf of Tonkin (Zarenkov, 1972); Thailand (Serène & Soh, 1976); Philippines - north of Lubang Island (Serène & Vadon, 1981), north-west of Lubang, west of Semirara Islands and Mompog Pass (Guinot, 1989a); 30-235 m.