(Takeda & Miyake, 1972)
Carapace approximately as wide as long, strongly and regularly convex, its surface smooth, only with shallow cervical and branchial depressions; antero-lateral borders armed with two similar teeth. Rostrum tridentate, median rostral tooth tuberculiform, shorter than lateral teeth. Chelipeds not very robust, whole inner surface of merus shallowly excavated; palm tuberculated on upper and outer surfaces. Second and third pereiopods stout, all joints with tubercles in low number. Distolateral corners of third to fifth abdominal segments angular. (Türkay 1995)
Type locality: Tsushima Strait, Japan, 33°55.5'N, 129°28.2'E, 70 m.
Range: Japan - Tsushima Strait (Takeda & Miyake, 1972a, Takeda, 1973c)