PLATE XX. 



Male Genitalia — 



1. Caudal view of Tibicen dealbata. 



2. Lateral view of Tibicen dealbata. 



3. Caudal view of Tibicen resh. 



4. Lateral view of Tibicen resh. 



5. Caudal view of Tibicen dorsata. 



6. Lateral view of Tibicen dorsata. 



(358) 



