(Pennant, 1777)
Carapace with numerous transverse, anteriorly ciliated ridges; front with 3 broadly triangular teeth; antero-lateral borders with 5 teeth including external orbital tooth. Thoracic sternum with marked squamiform rugosities. Cheliped palm with distinct ridges, carpus with a distinct tooth at its inner corner. Ambulatory legs stout and pilose; dactyl of swimming leg lanceolate and with a clear ridge in median line. (Türkay 1995)
Portunidae with eyestalks of normal length; carapace broad, with numerous transverse ridges, not convex in both directions; chelipeds and legs both long, one pair of legs as long as chelipeds; carapace relatively narrow; dactyl of fifth leg lanceolate; basal joint of second antenna broad. (Davie 1999)
Type locality: unknown.
Range: England - Plymouth (Palmer, 1927), Mevagissey (McNeill & Ward, 1930); coast of Europe; Azores (Miers, 1886); Canaries Islands; Mauretania (Bouvier, 1911); Cape Verde Islands (Miers, 1886); Mediterranean - (Ortmann, 1893, McNeill & Ward, 1930), Sardinia Island (Manning & Froglia, 1982); Adriatic Sea (Adensamer, 1898); Red Sea (Nobili, 1906); Japan - (de Haan, 1833), Kagoshima Bay (Stimpson, 1907), Goto-retto (Miers, 1879b), Tokyo Bay and Kagoshima (Ortmann, 1893), Sagami Bay, Kii and Nagasaki (Rathbun, 1902a), Sagami Bay (Parisi, 1916), Sagami Bay and Suruga Bay (Balss, 1922c), Inubo-zaki, Suruga Bay, Tanabe, west of Tsushima, between Tsushima and Goto-retto, Tubaki-zaki, and Ryuhi-zaki (Yokoya, 1933), Shimoda (Sakai, 1935), Tateyama Bay, Sagami Bay, Shimoda, Ise Bay, Onomichi and Nagasaki (Sakai, 1939), Ariake-kai (Miyake, 1961), Sagami Bay (Sakai, 1965b), south-east of Kyushu and Sagami Bay (Stephenson, 1972a), South off Tsushima (Takeda, 1973c), Inubo-zaki, Tokyo Bay, Shimoda, Sagami Bay, Mikawa Bay, Ise Bay, Kii Minabe, Tosa Bay, and Nagasaki (Sakai, 1976a), Amakusa (Yamaguchi et al., 1976), Yamagata Prefecture (Suzuki S., 1979), Shiono-misaki (Takeda, 1979a), Kii Minabe (Miyake, 1983), Hakodate Bay (Komai et al., 1992), off Matsuyama, Seto Inland Sea (Takeda et al., 2000); Korea - Yeong-il Bay (Kamita, 1941), Pusan (Kim, 1970), Hae-undae (Kim, 1973), Cheju-do (Kim & Chang, 1985); Yellow Sea (Takeda & Miyake, 1968c); East China Sea (Takeda & Miyake, 1968c); China - Fujian (Dai & Yang, 1991); Hong Kong (Balss, 1922c); Australia - Port Phillip and Bass Strait (Miers, 1886), Botany Bay to Wata Mooli, and Green Cape, N.S.W. (McNeill & Ward, 1930), Jervis Bay, Botany Bay, Green Cape, and Gunnamatta Bay, N.S.W. (Stephenson & Campbell, 1960), Port Phillip and Cape Everard, Vic. (Stephenson & Campbell, 1960), Wineglass Bay, Tasmania (Stephenson & Campbell, 1960), Oyster Bay, Bay of Fires, Tasmania, Disaster Bay, N.S.W., and Moreton Bay (Stephenson & Rees, 1968b), Disaster Bay, N.S.W. (Griffin, 1972); ?New Zealand (Borradaile, 1916); 30-120 m.