PLATE IV. 

 Idiocerus paUidus — 



1. Lateral view. 



2. Ventral view of style, connective and cedagus. 



3. Anal tube collar. 



Idiocerus verticis — 



4. Lateral view. 



5. Ventral view of style and connective. 



6. Anal tube collar. 



Idiocerus nervatus — 



7. Lateral view. 



8. Ventral view of style, connective and cedagus. 



9. Anal tube collar. 



(268) 



