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Dana, 1851

Carapace elongate, rounded, dorsal surface moderately convex, smooth. Cardiac region with an H-shaped shallow impression, branchial region with oblique striae. Front a little narrower than half the greatest breadth of the carapace, its anterior margin depressed and sharp, slightly concave medially, dorsal orbital border without suture, outerorbital angle triangular, posteriorly followed by a small tooth. Lateral margin slightly arched medially, posterior half weakly convergent posteriorly. Posterior margin almost straight. Merus of the third maxillipeds broadened anteriorly, its outer margin arched, the inner-distal angle bluntly rounded.
Chelipeds stout in the male, asymmetrical, smooth. Merus trigonal, ventral inner border crested, finely serrated, inner-distal angle with several teeth. Carpus with triangular inner-distal angle. Palm longer than high. Inner borders of the two fingers with irregular blunt teeth. Ambulatory legs flattish; merus especially broad and its posterior distal border expanded and cut into 2-3 pectinated teeth; the anterior border of carpus and propodus fringed with a row of soft hairs; the posterior border of propodus and both borders of dactylus fringed with stiff brown hairs and sharp spinules, claw-shaped at the tips.
First pleopod of the male stout, with a chitinous distal process, curved outwards, with a rounded lobe on its dorsal surface. Abdomen triangular; telson slightly broader than long. Abdomen of the female rounded; telson semicircular, its distal margin blunt medially and weakly concave. Carapace length of the male 14.6 mm, breadth 14.1 mm; length of the female 14.7 mm, breadth 14.8 mm. (Dai & Yang, 1991)

Type locality: Pacific Ocean, 28°N, 174°E.
Range: Mozambique - Chinde (Barnard, 1950); South Africa - False Bay (Stebbing, 1905), Table Bay, False Bay and Knysna (Barnard, 1950); Madagascar - Maintirano and Tamatave (Crosnier, 1965); Mauritius (Bouvier, 1915b, Michel, 1964); Japan - Odawara (Sakai, 1935), Sagami Bay, Shimoda, Ise Bay, Nanki Shirahama, Tosa Bay, Nagasaki and Northern Daito-jima (Sakai, 1939), Hachijo-jima (Sakai, 1954), Okinawa (Edmondson, 1959), Sagami Bay (Sakai, 1965b), Ogasawara-shoto (Takeda, 1973a), Off Inubo-zaki, off Boso Peninsula, Sagami Bay, Izu Peninsula, Mikawa Bay, Kii Peninsula, Tosa Bay, Nagasaki, Yoron-jima, Hachijo-jima, and Ogasawara-shoto (Sakai, 1976a), Yunohama, Yamagata Prefecture (Suzuki S., 1979), Nanki Shirahama (Miyake, 1983), off Hiroo, Hokkaido (Komai et al., 1992); Taiwan - (Dai & Yang, 1991), Tan-shui (Sakai, 1939, Lin, 1949); China - Paracel Islands (Dai & Yang, 1991); Kinmei Seamount (Sakai, 1978); 28°N, 174°E (Dana, 1852); Hawaiian Islands - Kaiwi Channel, Oahu and Molokai (Rathbun, 1906), Oahu, Midway Island and Laysan Island (Edmondson, 1959); Lord Howe Island (Edmondson, 1959); in mid-ocean, 6°13'N, 158°53'W (Edmondson, 1959), 15°50'S, 105°W (Dana, 1852); Kermadec Islands - Sunday Island (Chilton, 1911); west coast of South America.

Planes cyaneus