PLATE XIX. 

 Male Genitalia — 



1. Lateral view of Tibicen marginalis. 



2. Caudal view of Tibicen marr/inalis. 



3. Caudal view of Tibicen resonans. 



4. Lateral view of Tibicen resonans. 



5. Caudal view of Tibicen auletes. 



6. Lateral view of Tibicen auletes. 



(356) 



