264 Capt. A. C. MacGilclirist on Djcipoi Crustacea 



about lialf the breadth of the carapace stretching across the 

 intestinal regionj where the surface of the carapace is densely 

 pitted. Regions of carapace are fairly well marked out. 

 Surface of carapace, chclipc;ls, and legs sparsely covered 

 with hairs and the margins are more thickly coated and with 

 coarser hairs, which latter have a tendency to be arranged 

 in rows, as, for instance, on the propodite of the first ambu- 

 latory leg. 



Male. 



mm. 



Breadth of carapace 16 



Length „ 12 



Breadth of front 5 



Length of third pair of legs 27 



Orbits are widest internally, corresponding with the eye- 

 peduncles, which are conical, with the broad base internal. 

 Eyes are fairly well pigmented, little, if at all, deficient in 

 pigment. The antero-superior margin of the eye-peduncle 

 is acute, covered with longish hairs, and lies in line with a 

 similarly hair-clad transverse ridge at the upper borders of 

 the deflexed front, this ridge marking the angle of flexion of 

 the front on the carapace proper. 



The basal joint of the antenna reaches the level of the 

 lower border of the orbit and falls short of reaching the 

 posterior border of the deflexed front merely by the breadtli 

 of the slender second antenual joint. The second antennal 

 joint projects by more than halt its length beyond the front 

 and supports the third joint (which is more than half the 

 length of the second joint) and a moderately long flagellum. 



The buccal cavern gradually widens from behind forwards; 

 longitudinal ridges of endostome evanescent ; ischium of 

 external maxillipeds a little longer than broad and with a 

 longitudinal sulcus ; merus transverse, with the antero- 

 external angle produced and rounded, and with a notch at 

 the antero-internal angle from which the next joint springs. 



Chelipeds are shorter than legs ; the inner angle of the 

 wrist is produced to form a very distinct tooth or spine, and 

 on the upper margin of the raerus is a subdistal tooth, very 

 well developed and prominent and more acute than that on 

 wrist. Ambulatory legs are compressed, except the dactyli, 

 which are styliform ; the third pair, which are the longest, 

 are 2^ times the length of the carapace, and the fourth or 

 last pair are much smaller than the others. Projecting 

 distally from the postero-supcn'ior margins of the coxopodites 

 of the ambulatory legs are peculiar tortoise-foot-hke pro- 

 cesses, the distal free margin of each process being toothed 



