-_- 6 = 
10, Seta III of 8th abdominal segment directly in front of 
spiracle (A); seta I of 9th abdominal segment approximate 
to seta III but not on same plate (B). Anal fork absent. 

Cosmopterygidae p. 25 
Seta III of 8th abdominal segment not directly in front of 
spiracle (A and B) or,if so, anal fork present. Seta I of 
9th abdominal segment not closely associated with seta III 
(C, D, and EB) evoeeoeveeoeeveeeoeeeee eee e@eeoeeseeceeoeeoeseeeseeeeeeee eee ual 

11. Submentum with a large oval pit (A); seta III of 8th abdominal 
segment above and slightly behind the spiracle (B). 

B Blastobasidae p. 29 
-  Submentum without an oval pit; or, if pit is present, seta III 
of 8th abdominal segment above and in front of spiracle (A)... 12 

