Mid-tarsi with a cover of dense, light setae on dorsal side and partly on 

 anterior surface; these setae are stiff, less dense and less long than on 

 fore tarsi; a long, brownish primary seta in the apical part; dorsal side 

 with 2 long, yellow, more widely separated setae further basally; a light, 

 long seta further basally; posterior surface subdorsally with spinelike, 

 light setae which are slightly longer in basal part and form short, blunt, 

 light spines in the apical part; 4 yellowish, thick, strong, pointed spines 

 subventrally near apical margin, 2 of them longer; ventral side with 2 rows 

 of short light, strong, pointed spines; these spines are sparse, short, 

 obliquely arranged and almost curved to posterior surface; they are thin, 

 larger and slightly inclined anteriorly. Fewer setae on hind tarsi; dorsal 

 side of hind tarsi with sparse, light setae and 4 longer setae, including a 

 brownish distal seta; light, spinelike setae subdorsally, anteriorly and 

 posteriorly; a mediolongitudinal row of sparse, strong setae anteriorly; 

 apical seta larger than the others; posterior surface with similar setae in 

 basal part and 1 seta in apical part; 4 massive, brownish, spinelike setae 

 subventrally near apical margin; 2 rows of spinelike setae on ventral side; 

 they are thick and obliquely arranged in posterior part, thin and slightly 

 longer in anterior part. 



Claw strong, dark brown; basoventral seta blunt, massive; 2 spinelike 

 processes, which are larger on hind legs near seta. 



Thoracic and abdominal gills consisting of a stalk with simple filaments. 

 Mesothorax with a pleural gill with 2 7 filaments near the legs; metathorax 

 with 2 gills, 1 near the leg, with 25 filaments, and the other on ventral side, 

 with 18 or 19 filaments. 



Abdominal segments 1 and 2 markedly shorter than others; segments 4—6 

 longer; segment 8 strongly convex dorsally, covering segment 9. A shallow, 

 indistinct fold at sides of abdominal segments 2 — 7; segments 2 and 3 with 

 2 pleural gills and segments 4—7 with 1 pleural gill dorsal to this fold; ventral 

 gills arranged in 2 rows, a lateral and a median row; lateral row with 2 gills 

 on segments 1—5 and 1 gill on segments 6 and 7; median row with 1 gill on 

 segments 1 — 6. 



The number and arrangement of gills and number of filaments shown in 

 Table 25.* 



TABLE 25 











Ventral 





Segment 



Pleural 





















lateral 



intermediate 



median 



Mesothorax 



27 











Metathorax 



25 



- 



- 



18 



- 



1 



- 



- 



25+30 



- 



27 



2 



— 



14 

 29 



33+41 



— 



31 



3 



— 



10 

 25 



22+23 



— 



27 



4 



- 



23 



25+31 



- 



25 



5 



- 



24 



20+32 



- 



24 



6 



- 



19 



25 



- 



26 



7 



- 



24 



18 



- 



- 



Number of gill filaments variable. 



599 



