Stimpson, 1858
Front distinctly quadridentate, all four teeth subequal. Antero-lateral borders with three spatulate tubercles, distance between hepatic tubercle and base of exorbital tooth exceeding length of exorbital tooth. First two pairs of ambulatory legs distinctly shorter than thrice the length of carapace. (Türkay 1995)
Type locality: Hakodate Bay, Japan, 15 m.
Range: Japan - Hakodate Bay (Stimpson, 1858c, Tavares, 1991b, 1993), between Todo-saki and Kinkazan, between Siriya-zaki and Toda-saki, Inubo-zaki, near Maisaka, Suruga Bay, Atsumi, Toba, Owase, Ashizuri-misaki, Bungo Strait, Tanegashima, Koshiki-jima, Goto-retto, Tsushima, north of Nagato, Mishima, Wakasa Bay, Noto, Toyama Bay, Jusan-gata, and Tugaru Strait (Yokoya, 1933), Shimoda (Sakai, 1935a), Sagami Bay (Sakai, 1935, 1965b), Sagami Bay and Nagasaki (Sakai, 1937a), Amakusa, Toyama and Niigata (Miyake et al., 1962), near Tsushima (Takeda, 1973c), Sagami Bay, Kii Minabe and Tosa Bay (Sakai, 1976a), Hakodate and Usu, Hokkaido (Komai et al., 1992), Suruga Bay (Takeda, 1997); East China Sea (Takeda & Miyake, 1970a); 15-600 m.