PLATE IV. 



Idiocerns pallidics — 



1. Lateral view. 



2. Ventral view of style, connective and oedagus. 



3. Anal tube collar. 

 Idiocenis verticis — 



4. Lateral view. 



5. Ventral view of style and connective. 



6. Anal tube collar. 

 Idiocenis nervatus — 



7. Lateral view. 



8. Ventral view of style, connective and oedagus. 



9. Anal tube collar. 



(268) 



