Nobili, 1905
The carapace is narrower than the two species described above; the width being only 1.49 times the length. The dorsal surface evenly convex and the frontal margin visible in dorsal aspect. The orbits are just as broad as the frontal margin and the external orbital angle moderately defined. The shoulders of the carapace are not so strongly arcuate as in rathbuni but rather more strongly so than in Tritodynamia japonica, while the outer margins of the postero-lateral facets are subparallel and not at all divergent backward. Chelipeds are only sparingly hairy, the movable finger bearing a single stout tooth near the middle of the cutting edge. (T. Sakai, 1939: 604)
Type locality: Kobe, Japan.
Range: Japan - Kobe (Nobili, 1905, Shen, 1935), Yokohama (Balss, 1922c), Misaki and Nagasaki (Sakai, 1934a, 1935), Misaki (Shen, 1935), Yokohama, Misaki and Nagasaki (Sakai, 1939), Yokohama, Misaki, Kobe, Okayama, Nagasaki, and Shimabara Peninsula (Sakai, 1976a), Sea of Ariake (Miyake, 1961), Shimabara Peninsula (Miyake, 1961), Kii Minabe and Shimabara (Muraoka, 1998); Korea - Tarinkai Bay (Sakai, 1939), Masan (Kamita, 1941); China - Shandong Peninsula (Shen, 1932), Yantai (Shen, 1935).