Sakai, 1983
Carapace regularly quadrate. Lateral anterior corner of the carapace angled and obscurely bidentate. Medial and lateral frontal teeth very short. Carapace and pereiopods looking like smooth, but granular under magnifying lens. (Guinot 1998)
Type locality: Kumano-nada, Japan.
Range: Japan - Kumano-nada and Sagami Bay (Sakai, 1983a), Suruga Bay (Takeda, 1997).