strong setae of the ordinary type on the hind legs; posterodorsal seta of 

 hind legs shorter than on the forelegs and midlegs; anterior setae of both 

 legs farther from the apex than on the forelegs; one of them long, spinelike 

 on the midlegs, brown and strong on the hind legs; second seta shorter and 

 thinner than on the forelegs; near it a small secondary seta; anterior 

 ventrodistal seta of coxae thin and long; posterior seta shorter than the 

 anterior seta. 



Anterior seta of trochanter of midlegs and hind legs long, strong, brown, 

 not spinelike as on the forelegs; posterior seta small and thin; 2 antero- 

 ventral setae thin, hairlike, the third light brown, longer and thicker; both 

 posterior setae strong, dark brown and long. 



Femur longer than on the forelegs; dorsal setae longer; anterior seta 

 normal (not spinelike as on the forelegs), brown, moderately long, situated 

 subventrally; posterior seta dark brown; it is strong and thick on the mid- 

 legs, short and spinelike on the hind legs; both ventral setae light, almost 

 transparent, spinelike, slightly longer than on the forelegs. 



Tibiae of midlegs and hind legs similar; dorsal setae thin; midlegs 

 with only one seta; both setae displaced almost to the middle of the segment 

 on the hind legs; anterior seta brown, strong, displaced from the distal 

 margin farther than on the forelegs; posterior seta of midlegs thin; that 

 of hind legs light, short, thick and spinelike; both ventral setae situated in 

 the distal part, dark brown; they are spinelike on the midlegs; both are 

 situated subapically and one is thinner than the other on the hind legs. 



Tarsi of midlegs and hind legs ventrally with small and hardly visible 

 spinules; spinules at apex distinct. Distodorsal seta forming a light, short, 

 curved spine and 2 hardly marked spinules near it at the margin; second dorsal 

 seta thin, directed upward; anterior and posteroventral setae situated in the 

 basal part of the tarsus, on the sides of the segment; they are spinelike, 

 thinner than on the forelegs. 



Claw long, slightly curved, with a spinelike basal seta; a short row of 

 small spinules from this seta to the margin of the claw. 



First abdominal segment slightly narrower and shorter than the 

 following segments; segments 2—4 and 5—6 of about the same width; 

 abdomen tapering posteriorly on abdominal segments 7—8 (Figure 594); 

 segment 9 much smaller than the others, without dorsal sclerite; anal slit 

 with 4 short anal gills. Chaetotaxy of abdomen complex because of the 

 presence of thin, long secondary setae on the anterior part of abdominal 

 segment 1, which are numerous on the pleura of segments 2—8, bordering the 

 419 body like a lateral line. Anterior-angle and medioanal setae of the primary 

 dorsal setae long; ventral setae also long; all setae thin and light. Anterior- 

 angle setae of segment 9 together with the surface setae situated, as usual, 

 in the posterior part of the segment, near the margin. Five anal gills. 



Anal legs long, narrow, very movable; section "a" much longer than ' b, 

 without setae. Sclerite "b" indistinct, light yellow, with grayish brown dots; 

 prongs of "fork" geniculate bend dark brown and long; a long brown seta 

 dorsally above them; a similar seta situated distally on the sides of the 

 sclerite; ventrobasal seta strong, shorter than the distodorsal setae; a row 

 of thin, shorter setae between this seta and the distodorsal seta; thin, 

 moderately long setae and very small hairlike setae in the dorsodistal part; 

 a small basal sclerite ventrally. The small rounded sclerite "c" with a 

 short, yellow, spinelike seta. 



471 



