(Rathbun, 1916)
Two prominent knobbed spines on carapace surface, one on gastric, one on cardiac region, branchial region lacking a distinct central dorsal tubercle or spine, pterygostomial margin with a smooth tubercle; supraocular eave spinulous; rostral lobes apically rounded, sometimes with small spinules. Anterior lobe of eyestalk apically blunt. Basal antennal article with spinules in a single row. Surface of sternum lacking spinules. Male first pleopod with subterminal lobe overreaching distal end of inner lobe, tip of this last one marked by a acute, hooked spine. (Türkay 1995)
Type locality: Tawitawi Group, Sulu Archipelago, 5°11'50"N, 119°54'E, "Albatross" stn 5159, 18 m.
Range: Japan - Shimoda (Sakai, 1935, 1938), Sagami Bay (Sakai, 1965b), Sagami Bay, Izu Peninsula, Kii Peninsula, and Amakusa-shoto (Sakai, 1976a), north off Goto-retto (Takeda & Miyake, 1969e), Genkai-nada (Takeda, 1973c), Shiono-misaki (Takeda, 1979a), Sagami Bay (Griffin & Tranter, 1986a); Sulu Archipelago - Tawitawi Group (Rathbun, 1916, Griffin, 1976, Griffin & Tranter, 1986a); Indonesia - Paternoster Islands, Roti Island and Kepulauan Kai (Griffin & Tranter, 1986a); 10-105 m.