Tergites of metathorax brown, distinct, anterioi- sclerites in form of long 

 triangles, situated close together but not fused, with 8—9 setae, posterior 

 sclerites triangular, larger, with 10— 11 setae; lateral tergites narrow, pale, 

 with 4—5 grayish dots, a transverse band of coarse, reddish streaks and 

 2—3 dots posteriorly near nnedian margin; anterior part with 13—14 setae 

 including longer pi-imary seta (Figure 52 5). 



Proepimeron oblong, light yellow; lateral sti-ipe narrow, reddish brown, 

 seta near suture thin, strong, dark; episternuna chestnut brown, ti-ochantin 

 blackish basally, seta thin, dai-k, setules transparent. 



Number and arrangement of 



gills of Ch. 



s a h 1 b e r g i 





Segment 



Dorsal 



Pleural 



Ventral 



2 



1 

 1 



1 



1 



1 

 1 



3 



1 



1 



1 



1 



1 

 1 



4 



1 

 1 



1 



1 (0) 



1 

 1 



5 



1 

 1 (0) 



1 (0) 





1 

 1 



6 



1 (0) 

 1 (0) 







1 

 1 



7 









1 



Prosternite (Figure 52 6) small, light yellow, slightly sclerotized, with 

 2—3 pinkish dots on each side; horn narrow. Mesothorax with a row of 

 large, oblong, reddish dots on ventral side; metathorax with 3—4 such dots. 



Legs brown, with indistinct punctation on coxae, femora, and tibiae; 

 tibiae and tarsi with blackish distal bands; ratio of length of legs 67:100:92. 



Primary ventral setae of fore femur (Figure 527, A) in form of 2 large, 

 yellow spines, basal spine slightly thicker and shorter than apical, both 

 pointed; posterior seta dark, thin, situated more basally, as long as the 

 posterior subapical seta of trochanter; distal part with 2 short, brown, 

 secondary setae, and a small, light seta dorsally. Primary ventral setae 

 of midlegs (Figure 527, B) represented by a large, strong, brown spine in 

 middle of segment, and a similar short, brown, spiniform seta, which is 

 longer and thinner, situated at basal margin; distal part dorsally with 

 4 secondary setae, 2 short brown and 2 small light setae. Primary baso- 

 ventral seta of hind femur (Figure 52 7, C) in form of large, strong, brown 

 spine in middle of segment; apical seta situated nearby, brown, moderately 

 long; 4 secondary, dorsal setae in distal part, 3 short, brown setae and a 

 small light seta more basally. 



Dorsal process of abdominal segment 1 blunt, high. Lateral line on 

 segnaents 3—8. Ventral gills on segments 2—9, dorsal gills on segments 2—t 

 pleural gills on segments 2—4 (presegmental on segment 4), gills small 

 or rudimentary, if present further posteriorly. 



377 



