(Rathbun, 1906)
Carapace subtriangular, one and a half times as broad as long. A shallow post-hepatic constriction. Surface of carapace and chelipeds covered everywhere with flattened stellar granules, varying in size and densely placed. Branchio-cardiac and branchio-hepatic depressions not very deep. Protuberances surmounted by a tubercle disposed as follows: Three gastric in a triangle base forward, two median cardiac, the anterior much the more prominent, two branchial, the posterior on postero-lateral margin and both in line with one at end of posterior margin.
Front narrow, tip tuberculiform. The outer angle of the antennulary fossette is a projecting tooth.
A small, blunt spine near posterior end of hepatic margin. Thirteen or fourteen similar spines on antero-lateral margin of branchial region, the last of which forms the lateral angle; near it, on the transverse portion of the postero-lateral margin, two or three spines.
Chelipeds massive, in the male three times as long as carapace; surface nodular; arm obscurely prismatic, margins armed with short, granulated spines, those of the posterior margin the larger, the row being continued proximally on the upper surface. One chela a little stouter than the other, marginal protuberances very nodular and irregular, the largest near middle of inner margin. Fingers of larger chela gaping. In the type the pollex of the smaller claw is entirely lacking, the propodus being truncate at the distal end, with the lower corner smoothly rounded.
Legs very rough, with spinulous borders and surface sharply granulate; lower surface of all the legs and upper surface of merus of the first to third pairs relatively smooth. Distal two-thirds of propodus and basal half of dactylus clothed with long, coarse hair. (Rathbun, 1906)
Type locality: south coast of Oahu, Hawaiian Islands, "Albatross" stn 3811, 435-461 m.
Range: Taiwan; Hawaiian Islands - Oahu (Rathbun, 1906), Oahu, Kawaihae, and Molokkai Channel (Ng & Tan, 1999); Tuamotu Archipelago - Mururoa (Poupin, 1996a); 319 m.