Anal legs (Figure 439) situated at the sides of the large projecting folds 

 of the anus, short and broad; sclerite "b" of the basal segment almost 

 vertical; one of its 3 distal setae situated on a membrane, another on the 

 bridge; sclerite "c" with a very short seta. Claw (Figure 440) massive, 

 short, with a broad membranous, transverse stripe; thin, basal seta 2 longer 

 than the others; setae 1, 3, 6, 7 and 8 spinelike and short; setae 4 and 5 

 absent. 



(345) 



FIGURES 441-447. Oxyethira c os t al is Curt.: 



441 — case of full-grown larva; 442 — lst-stage larva; 443 — left mandible of 

 4th-stage larva, dorsal; 444 - left foreleg of lst-stage larva, posterior; 445 — 

 right anal leg of 4th-stage larva, outer view; 446 — postsegmental plates of seg- 

 ment 4 and presegmental plates of segment 5; 447 — pupa in its case (441—446 

 after Nielsen). 



381 



