(Dana, 1852)
The carapace is subcircular in its outline and convex in both directions; the dorsal surface is ill-defined, almost naked and glabrous only with microscopical granules near the antero-lateral borders and with a transverse row of short hairs behind the front. The front is cut into two lobes by a median wide sinus, each lobe being not markedly convex; each of the lateral angles is very weakly angulated and separated from the supraorbital lobe by a shallow dorsal depression. The orbit is suborbicular; the eyestalk and the cornea are very stout and bulged; the supraorbital border is only narrowly and weakly raised, bearing two very small but distinct interruptions.
The antero-lateral border of the carapace is convex and not delimited from the postero-lateral border; in the larger specimens it is almost entire, but in the smaller ones it is armed with three very small teeth that diminish in size from the first to the third.
The chelipeds are quite unequal; the merus is unarmed except for minute granules; the carpus and palm are also minutely granulated, but the granules on the smaller cheliped are rather accentuated and conical; when the fingers are closed, the narrow gape is always left; the tips of the fingers are imperfectly but rather distinctly hollowed; the proximal halves of the fingers are blackish brown and the distal halves are white, but both parts are not quite distinctly delimited. The ambulatory legs are rather short and compressed; the upper border of the merus, carpus and propodus are minutely serrated. The first male pleopod bears several long, wavy hairs near the tip. (Takeda, 1972a)
Type locality: Sandwich Island, Hawaiian Islands.
Range: Red Sea (Klunzinger, 1913, Guinot, 1964b); Madagascar - Tuléar (Serène, 1984); Réunion (Serène, 1984); Mauritius (Michel, 1964); Laccadive Islands - Minicoy Atoll (Borradaile, 1902b); Japan - Amami-Oshima, Yoron-jima, and Ishigaki-jima (Takeda, 1972a); Vietnam; Malaysia; Philippines; Indonesia; Australia - Queensland; Mariana Islands (Holthuis, 1953); Marshall Islands (Holthuis, 1953); Gilbert Islands (Balss, 1938a, Holthuis, 1953); Hawaiian Islands - Sandwich Island (Dana, 1852), Johnston Island (Edmondson, 1925); Tahiti (Rathbun, 1907); Tuamotu Archipelago - (Rathbun, 1907), Rikitea (Nobili, 1907, Guinot, 1964b).