172 U.S. NATIONAL MUSEUM BULLETIN 23 6 



Both are swollen at base, swollen part of seta 2 of considerable length. 

 In addition, there are some spinules at the internal furcal border. 



Antennules (fig. 63/) very short, ji length of cephalic somite, 6- 

 segmented. 4th segment with small conical process bearing aesthetasc 

 and 2 setae. Setae nude and not plumose as in many other members 

 of this genus. 



Antenna (fig. 63^) with 2-segmented exopodite, slender, with 1 and 

 3 setae respectively. Allobasis with single seta; endopodite with total 

 of 8 spines and setae; 4 setae are geniculate. 



Except for the mandibular palp and the maxillipede, the oral 

 appendages of this species will not be described in detail. Exopodite 

 of mandibular palp 1-segmented, styliform. There are 6 spiniform 

 setae, of which 2 along the external border are flattened and dagger- 

 shaped (fig. 63A). 



Maxillipedes chelate; coxa small, with a single spinulose seta. 

 Basis moderately swollen, internal margin straight, spinulose, with 

 a single median seta. Endopodite 1-segmented, digitiform, curved 

 and pointed, distal % of internal margin finely denticulated (fig. 630 . 



Leg 1 (fig. 63a) with 3-segmented exopodite and 2-segmented 

 endopodite. Coxa and basis fairly large; basis with short internal 

 spine and fine external seta. Exopodite % length of 1st endopodal 

 segment, inserting proximally of endopodite, 1st segment without 

 and 2nd segment with internal seta, slightly lengthened. Apical 

 exopodal segment small, with total of 5 appendages. 1st endopodal 

 segment twice as long as wide, with small internal seta inserting at 

 upper third of margin. 2nd endopodal segment small, as long as 

 wide, bearing 3 appendages: large, denticulated claw; seta of equal 

 length; and very fine seta. Claw and seta stronger and longer than 

 appears from Norman and T. Scott's figure. 



The details of legs 2 to 4 appear from the setal formula, figures 

 63b-d, and the following notes. Setal formula: 



Endopodite of leg 2 notably big and flattened; apex of exopodite 

 reaches upper third of 3rd endopodal segment. Legs 3 and 4 have 

 normally developed endopodites. 



Leg 5 (fig. 63e) with distinctly articulating exopodite, which is 

 elongate-ovate, twice as long as broad and bears 5 spiniform setae: 

 2 at external margin, 2 at apex, and 1 at internal margin. Some 

 small spinules are dispersed along the external margin. External 

 lobe small, with fine seta and external row of spinules. Baso-endop- 

 odite small but broad, reaching as far as upper third of exopodite. 



