Sakai, 1936
Carapace smooth, significantly wider than long, antero-lateral borders armed with three equal teeth, lateral cardiac grooves not marked. Rostrum bluntly tridentate, lateral teeth more prominent than median one. No epipod on cheliped. Outer face of cheliped palm marked with some lines of small granules. Distal margins of carpi and propodi of second and third pereiopods lobed. Abdominal segments without distinct tubercles, posterior margin of male abdomen telson with two spines. (Türkay 1995)
Type locality: Tosa Bay, Japan
Range: Japan - Tosa Bay (Sakai, 1936c, 1976a), Tanega-shima (Takeda, 1976b).