(de Haan, 1837)
Carapace transversely ovate and the regions moderately defined; the front extremely produced beyond the general outline of the carapace, the anterior edge of each frontal lobe being subtruncate and slightly oblique outwards. The antero-lateral borders are obscurely divided into five lobes exclusive of the external orbital angle, each lobe ending in a tuberculiform tooth, the first one being on a lower level.
The superior and lower edges of arm crested and fringed with hairs; wrist enlarged and rugose; palm has a very shallow and indistinct groove along the upper outer border and the fingers usually obtusely pointed at tip. Merus of the ambulatory legs are thickly fringed with hairs along the anterior border, the posterior border of propodus and both borders of dactylus are also fringed with hair. (T. Sakai, 1939: 460)
Type locality: Japan.
Range: Japan - (de Haan, 1837), Shimoda (Stimpson, 1907), Tateyama Bay (Parisi, 1916), Shimoda (Sakai, 1935), Tateyama Bay, Misaki, Shimoda, Nanki Shirahama and Nagasaki (Sakai, 1939), Sagami Bay (Sakai, 1965b), Misaki (Guinot, 1968a), from Boso Province to Kyushu (Sakai, 1976a), Amakusa (Yamaguchi et al., 1976), Yamagata Prefecture (Suzuki S., 1979), Noto (Miyake, 1983), Hachijo-jima, Manazuru, Shimoda, Izu Peninsula, Nanki Shirahama, Tosashimizu, and Shimabara (Muraoka, 1998), Amami-shoto; Korea - Cheju-do (Kim & Chang, 1985); intertidal zone.