dorsal side of process. Tarsus long, in contrast to forelegs, narrower than 

 tibia and slightly longer; both dorsal setae yellowish, apical seta moderately 

 long, larger than subapical; posterior ventral seta in form of light spine; 

 anterior ventral seta situated at ventral margin at end of row of spinules, 

 in form, of a small, thin spine. Claw strong, curved, longer than on forelegs, 

 basal seta in form of blunt, curved, brown spine. 

 386 Hind legs (Figure 638, C) similar to midlegs; hind tibia slightly different 

 distally. Anterior basodorsal seta of coxa very long, longer than on midlegs; 

 both distodorsal setae thin, long; 2 setae at margin of depression, 

 5 moderately long setae distal to posterior seta; basal part with more 

 numerous secondary setae than midlegs, some nearly as long as basal seta; 

 anterior setae dark brown, long, larger than on midlegs; pi-imary disto- 

 ventral setae light brown, modei-ately long. Trochanter and femur as on 

 midlegs, chaetotaxy similar, anterior and posterior surface setae larger. 

 Tibial and tarsal setae as on midlegs; claw and its seta the same. 



Abdominal segmient 1 without dorsal process; lateral processes in form 

 of small elevations; ventral surface broadly convex in middle, with 2 short, 

 blackish brown, median setae anteriorly. Lateral line on segments 3—8, 

 with small, light hairs. Gills single, on segments 2—6. 



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FIGURE 639. Oligoplectrodes p o t a ni ni Mart. 

 Dorsal sclerite of abdominal segment 9 (A), claw of 

 left anal leg, lateral (B) 



Tergite of segment 9 (Figure 639, A) brownish, indistinct; about 

 20—21 setae, including 8 long, thick, blackish brown setae in middle; primary 

 medioanal setae slightly larger than the others; anterior-angle setae long, 

 brown, shorter, and thinner than medioanal setae; 5—6 of other setae thin, 

 light brownish. 



Sclerite "b" of anal legs chestnut brown, lighter in lateral and ventral 

 parts; setae situated on membrane, a median group of 6 long, thick, blackish 

 brown setae distally, 8 smaller, brown setae laterally, 3 of them thin, 

 moderately long; median margin with 3 thin, moderately long, dark brown 

 setae; ventral seta short, strong, brown. 



484 



