1 86 



7. Face of the same. 



8. Thyrocephaliis leucoptcnis, teg^nien. 



9. Nesocore Hdicina, nymph. 



10. Face of the same. 



11. Proterosydnc arhorca. 



12. Face of the same. 



i2>- Sikaiaiia iicsiupc, tegmen. 



14. Siiiicrotatodclph.ax pcrkiitsi. 



15. Delphax inatanifii. 



16. Cclastodclphax histrioiiicus. 



Plate XIX. 



T-3. Lyric en imtJiv.rni, male genitalia. 



4-5. Muiria stridiila, the same. 



6-8. Proiitista hi]Jiholt::i, the female genitalia. 



9. Philadelplieia paitda)ii, the male genitalia 



10. Nesoiiiphas iiisignissiiiia b.ead and nota. 



11. The same in profile. 



12. Phaciocephalus z'iticnsis, head &c. 



13. Profile of the same. 



14. Face of the same. 



15. Szveaeyia lyriceii, head and nota. 



16. Face of the same. 



17. The same in profile. 



18. Antenna. 



19. The same enlarged. 



20. Phaciocephalus iiiiltodias 



Plate XX. 



1. Pyrrlwnenra cifharista, wing. 



2. The same, stridulatory area. 



3. Lyricen inithnrni, wing. 



4. Stridulatory area of the same. 



5. A'ariant venation of No. 3. 



6. PyrrJwncnra saccharicida, wing. 



7. .Stridulatory area of the same. 



8. Pro 11 fist a moesta, wing. 



9. Stridulatory area c.f the same. 

 10. Muiria stridula, profile. 



IT. Base of flight organs in same. 



12. Wing of same. 



13. Dorsal view of same. 



