124 TT.S. NATIONAL MUSEUM BULLETIN 236 



Antennules (fig. 42a) short, 6-segmented. 2nd segment fairly long; 

 4th segment with a very short conical process bearing an aesthetasc 

 and some setae. The setation of this appendage is represented in 

 figure 42a. 



Antenna (fig. 426) with basis and 1st endopodal segment separate. 

 Exopodite apparently 1 -segmented; with botal of 6 strong setae and 

 indication of small spine at apex. 6 setae on 2nd endopodal segment, 

 1 of which is dagger-shaped, 3 are geniculate and of a particular struc- 

 ture, and 2 are setose. 



Praecoxa of mandible elongated, cutting edge small, with 6 teeth 

 (fig. 42c). Palp strongly compressed, greatly developed. Coxa and 

 basis fused together, with 9 marginal setae and 1 appendicular seta. 

 Endopodites and exopodites well developed, unsegmented, the former 

 with 4, the latter with 5 setae. All setae densely setose, some with 

 thickened bases (fig. 4:2d). 



I failed to obtain a suitable preparation of the maxillule. 



Maxilla (fig. 42/) small, with a distinct praecoxal endite, bearing 

 5 setae, and a small coxal endite, carrying single seta. Basis and 

 basal endite fused, well developed, with 6 marginal setae, increasing 

 in size proximally. More proximal seta, however, short and dagger- 

 shaped. 



Maxillipede (fig. 42^) small, coxa with single fine seta. Basis 

 with strong, haired, internal, spiniform process and apical, geniculate 

 seta. Endopodite small, unsegmented, with 2 geniculate setae of 

 same shape as that on basis. 



Legs 1 to 4 with very strongly chitinized intercoxal plates, acting 

 as strong trabeculae connecting left and right coxa. 



Leg 1 (fig. 44a) with strongly developed, flat basis; endopodite 

 2-segmented, exopodite 3-segmented. Basis triangular, with strong 

 external seta. 1st exopodal segment with setose external seta, 2nd 

 segment with 1 setose seta, 3rd exopodal segment with 3 of such 

 setae. In addition, there are, on the 3rd exopodal segment, 2 apical 

 setae and a very strong internal seta. All setae at external margin 

 with swollen bases. 1st endopodal segment large, triangular and 

 flattened, with single internal seta. 2nd endopodal segment small, 

 with 2 apical spines with longitudinal, pectiniform row of hairs. 



Legs 2 to 4 all of same pattern. Basis transversally elongated, 

 endopodites and exopodites 3-segmented. The details of these feet 

 can be taken from figures 43c, 446,c, the setal formula, and the follow- 

 ing notes. Setal formula: 



