distoventral setae small, smaller than the setules on the convex part of the 

 membrane; anterior seta clearly marked, projecting; posterior seta small, 

 hardly distinguishable among the spinules. 



Trochanter membranous ventrally and posteriorly in a large area of the 

 distal part; anterior seta short, reddishVdark brown and strong; posterior 

 seta small and yellowish; basoventral seta situated on the suture and the 

 median seta forms two thick yellowish spines; distal seta rudimentary, very 

 small and light; posteroventral seta situated subapically, strong and 

 situated on a membrane; second posterior seta situated farther basally, 

 hardly distinguishable among the chetoids of the membrane. 



Femur strongly convex dorsally, with a crest of thin and light hairlike 

 chetoids (spines) which become shorter toward the distal end; a row of 

 large dots anteriorly, near the base of the crest; basodorsal seta situated 

 near the base of the crest, straight, dark, moderately long and feather - 

 shaped; distodorsal seta short and thick, light brown; anterior seta situated 

 subapically; short, thick and dark brown; posterior seta lighter and smaller; 

 anteroventral seta situated basally, short, spinelike, yellowish and thick; 

 posteroventral seta situated in the middle of the segment near the margin 

 of the sclerite, small, thick and yellowish brown. 



Tibia also massive, with a broad dark stripe and 3 large dots anteriorly; 

 hairs of dorsal crest shorter near the base than near the apex. Setae short 

 and strong; distodorsal setae situated close together, brown, longer and 

 thinner than the others; posterior surface seta smaller than anterior seta; 

 both distoventral setae thick; spinelike setae reddish brown; anterior seta 

 curved; posterior seta straight. 



Tarsus with a dark stripe anteriorly; hairs of the crest smaller than on 

 the tibia and shorter toward the distal end; distoventral setae long and 

 strong, relatively thin; dorsodistal setae shorter and thicker; there are 

 minute light spinules ventrally at the margin. 



Claw large, curved, with a large basal seta. 



There is no basal tubercle on the coxae of forelegs and hind legs; 

 anterior basodorsal seta feather-shaped as on the forelegs and slightly 

 longer; distodorsal seta situated at a distance from the basal seta, small and 

 dark; posterodorsal seta short, thick and brown; it is slightly shorter on the 

 hind legs; unlike on the forelegs, the basal of the 2 anterior surface setae 

 is smaller than the apical seta. Trochanter and its setae on the forelegs. 

 Femur less massive; dorsal setae similar; anterior surface seta thinner, 

 brown, situated slightly more distally than on the forelegs; posterior seta and 

 the posteroventral seta longer, lighter and thinner on the hind legs; baso- 

 ventral seta similar. Coloration and form of tibia and tarsus as on the 

 forelegs; distoventral setae of tibia and tarsus slightly longer. Claws 

 slightly longer than on the forelegs; seta similar. 



Abdominal segment 1 shorter than 2; segments 2—5 are about equally 

 broad; width of abdomen decreasing posteriorly. Gills with long conical 

 stalk, the dorsal surface covered with numerous gill filaments, except on 

 the thin light tip. Gills of segments 2—6 longer than the others; gills of 

 segments 7 and 8 short, with a broad base (Figure 319). Setae on abdominal 

 segments 1—7 small, thin and dark; anterior-margin setae small, distinct 

 on all the above segments; anterior -angle seta slightly larger, situated at the 

 base of the stalk of the gill; a small secondary seta nearby; medioanal and 



305 



