Arrangement of gills and number of gill filaments shown in Table 15, 



TABLE 15 





Pleural 



Ventral 



Segment 



1 ateral 



median 



1 

 2 

 3 



{ 

 { 

 { 



7 



1 



1 

 2 



1 



2 

 1 

 2 



1 



15-17+15-17 

 20-21+17-18 

 18-19+17-18 



| 14-15+16-17 



| 16-17+17-19 



\ 10-11+10-12 



8-10+10-11 



13-14 

 15-16 



11-12 



11-12 

 8-9 



Abdomen with a continuous cover of long, sausage- shaped, small, slightly 

 curved chetae interspersed with a few cup- shaped chetae which are narrower 

 at the base. 



Primary setae of abdomen light and thin; anterior-margin seta small; 

 anterior-angle seta short; a smaller secondary seta near it; medioanal seta 

 longer than the others; intermediate and lateral seta situated close together 

 nearby; they are thin and slightly shorter. Anal setae on the posterior 

 segments (6—8) slightly longer than on the preceding segments. Ventral 

 488 side of segment 8 with 2 thin, triangular yellowish plates with shining 



yellowish brown, long, covering setae; each side with 6 strong, dark brown 

 setae posterior to the plate, the 3 lateral setae larger than the others. 

 Ventral sclerites of segment 9 large (Figure 688, A); covering chetae similar, 

 long, setuliform, shining brownish yellow, thick, long, pointed; 8 brown thick 

 setae posteriorly, the 2 lateral setae larger than the others. Sides of 

 segment 9 with a strong, dark brown, longer seta, and 4 short, thick setae. 

 Segment 9 dorsally with 2 thin, triangular, yellowish brown sclerotized areas 

 with strong setae; posterior part of sclerite with 3 brown setae, the lateral 

 seta longer than the other 2; near it, 2 thin, hairlike setae. Covering setae 

 of segment 9 allhairlike; cup-shaped covering setae are absent. 



Anal legs relatively long (Figure 688, B), geniculate; dorsolateral 

 sclerite light yellow, with a reddish brown stripe at the base on the outer 

 side; 2 dark brown, long setae, a moderately long, light seta, and a very thin, 

 short seta dorsally near the base of the articular rods; similar dark brown, 

 shorter, sparse setae situated in the distal half at the ventral margin; 

 several such setae more dorsally; margin and surface also with several 

 sparse, thin, light setae. Covering chetae of sclerite as on the other 

 sclerites, curved, blunt and hairlike. Membranous surface ventrally with 

 a long, strong seta directed to the end of the claw, and with several light 

 setae; apical part without setae, in the middle basal part with short, sparse, 



556 



