90 



rostrum. The two flagella are of about equal length, but the 

 outer is slightly thicker than the inner. 



The antennal peduncle is five-jointed. The basal joint is 

 short and broad, the second much larger, ending at its upper 

 and outer angle in a strong fixed spine. Springing from the 

 bass of the latter, and lying between it and the fourth joint, is a 

 long mobile spine representing the scale. The third joint lies 

 more or less alongside of and below the second. The fourth 

 and fifth joints are roughly cylindrical ; the fourth is about 

 one and a half times as long as the fifth. The flagellum is more 

 than twice as long as the antennules, and almost twice as long 

 p.s the carapace. |The lower surface of the last three peduncular 

 joints and of the proximal half of the flagelhmi is fringed with 

 heavy plumose setae of a brownish yellow coloui. This fiinge 

 is not absent in the female, as stated by Bell (1853). 



The exopodite of the second maxillipedes reaches very nearly 

 to the distal end of the propodite, which is broad and inflated ; 

 the carpus and the dactyl are both very short ; the longest joint 

 is the merus, which is about three times as long as the ischium. 

 The appendage bears an epipodite, a podobranch and a rudimen- 

 tary arthrobranch. 



The third maxillipedes are pediform and unarmed. No 

 one joint is much longer than the others. Each joint bears a 

 heavy fiinge of setae. The exopodite reaches slightly beyond 

 the end of the merus. 



The chelipeds are massive and unequal. The basal joints 

 and the first half of the merus are very strongly compressed. 

 The distal part of the merus, however, expands suddenly. The 

 carpus is very short and broad. The prododite is the largest 

 joint of the appendage ; it is slightly compressed ; the palm is 

 one and a half times as long as the fingers ; the lower margin 

 bears a fringe of fine setae, and both fingers are covered with 

 tufts of stiff bristles. The tips of the fingers curve towards one 

 another, and cross when closed. The dactyl has a well marked 

 ridge on the outer side, and bears more bristles than the fixed 

 finger. The cutting edges are very minutely serrate, and, in 

 the larger cheliped, there are also a few large crushing tubercles. 



The second pereiopods are much more slender than the first. 

 They terminate in equal chelae, and are strongly compressed. 



The fourth pereiopods are the largest, with the exception of 

 the first pair, and the fifth the shortest. The last three pairs 

 all end simply, and are compressed and slender. 



In the second pereiopods setae are present on the lower edge 

 of the merus, on the distal half of the carpus, and on the whole 

 of the propodite and dactyl ; there are tufts of longer hairs at 

 the extremities of carpus and merus. 



In the third pair the lower edge of the merus has only a row 

 of short bristles ; the propodite, dactyl, and carpus have setae 

 on their lower margins. 



The setae on the fourth pair are more sparsely scattered than 

 on the third. 



