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7. Face of the same. 



8. Thyrocephalus leucoptenis, tegmen. 



9. Nesocore fidicina, nymph. 



10. Face of the same. 



11. Frofcrosydnc arborea. 



12. Face of the same. 



13. S'ikaiana iicsiope, tegmen. 



14. Suiicrotatodclpkax pcrkiiisi. 



15. Dclplia.v inatanitu. 



lO. Gclastodelpha.v hisfrioiiiciis. 



Plate XIX. 



1-3. Lyricen imthnrni, male genitalia. 



4-5. Miiiria stridiila, the same. 



6-8. Proutista hiinholtzi, the female genitalia. 



9. Philadelphcia paiidaiii, the male genitalia 



10. Nesoiiiplias insigiiissitiia head and nota. 



11. The same in profile. 



12. Phaciocephaliis viticiisis, head &c. 



13. Profile of the same. 



14. Face of the same. 



15. Szi'e::cyia lyricen, head and nota. 



16. Face of the same. 



17. The same in profile. 



18. Antenna. 



19. The same enlarged. 



20. Phaciocephaliis inilfodias 



Plate XX. 



1. Pyrrhoneiira citharista, wing. 



2. The same, stridulatory area. 



3. Lyricen imthiirni, wing. 



4. Stridulatory area of the same. 



5. Variant venation of N^o. 3. 



6. Pyrrhoneiira saccharicida, wing. 

 7- Stridulatory area of the same. 



8. Proutista nioesta, wing. 



9. Stridulatory area of the same. 



10. Miiiria stridiila, profile. 



11. Base of flight organs in same. 



12. Wing of same. 



13. Dorsal view of same. 



