Rathbun, 1932
A strong sharp spine on either side of the carapace is a distinguishing feature. Carapace high, its sides converge gradually forward to the spines, in advance of which the sides and front form a regular arch interrupted by the eyes, the corneae protruding; margins bluntly rounded; posterior margin sinuous, a little concave at middle. Cardiac region very tumid; it and the metagastric region are set off by deep grooves. Carapace abruptly deflexed before spines; front truncate. Eyestalks stout, a little constricted before the corneae. Merus of cheliped armed with two sharp spines near middle of lower margin and a strong, subdistal falciform spine on inner margin. Length of carapace 8.6, width 10 mm. -- Rathbun. (T. Sakai, 1939: 575)
Type locality: Omae-zaki, Japan.
Range: Japan - Omae-zaki (Rathbun, 1932), Kii Strait and Muroto-misaki (Yokoya, 1933), Ashizuri-misaki (Sakai, 1976a), Kumano-nada (Miyake, 1983), Suruga Bay (Takeda, 1997); Philippines - Verde Island Passage (Serène & Vadon, 1981); 270-527 m.