(Ortmann, 1893)
Surface of carapace spinulous; protogastric and mesogastric regions with a spine, branchial regions with two long spines submedially behind single cardiac spine; margin of supraorbital eave with many blunt spinules, hepatic and branchial margins behind it bearing a great number of spinules; rostral lobes with a few blunt spinules, well separated from each other by a U-shaped notch, tips rounded. Male chelipeds extremely robust, merus proximally broadened and spinulose; carpus short and rounded with a row of strong spines on its inner and outer border; palm moderately swollen; fingers slightly incurved. Meri of ambulatory legs broadened towards their distal ends, with strong spines along their two margins; dactyli of last two pairs curved but not very strongly falcate. (Türkay 1995)
Type locality: Sagami Bay, Japan.
Range: Japan - Sagami Bay (Ortmann, 1893, Sakai, 1938, 1965, 1976, Griffin & Tranter, 1986a), Shimoda (Sakai, 1935), Tsushima Strait (Takeda, 1973c), off Honshu (Griffin & Tranter, 1986a), Suruga Bay (Takeda, 1997); East China Sea (Takeda & Miyake, 1969e); Hawaiian Islands - Laysan and Maui (Rathbun, 1906), Laysan Island (Griffin & Tranter, 1986a); 61-720 m.