612 EXPLANATION OF THE PLATES. 



TIG. 



11. Alitrunk and part of tegmina and wings of Fulgora later- 

 naria. Postfrsenum funiculate, with an elastic part 

 marked a. VOL. III. p. 558. 



12. hemelytra and wings of Pentatoma. 



13. wings of Panorpa. 



14. .. Trichoptera. 



15. - i Lepidoptera. Geometra. 



16. " Lepidoptera. 



17. Diptera. 



18. Wing of Chermes Fraxini. 



19. Tegmen of Locusta. 

 20. Issus. 



21. Wing. Cercopis sanguinolenta. 



22. Locusta. 



23. Hemelytrum of Reduvius ? 



PLATE XXIX. a 



1. Gills of a spider. (Treviran.) 

 Scorpio europceus. (Ibid). 



3, Aeriducts of larva of Ephemera fusco grisea. (De Geer.) 



VOL, IV. p. 58. 



4. ' vespertina. (Ibid.) Ibid. 



5. vulgata. (Ibid.) Ibid. 



6. . Sialis lutaria. (Ibid.) Ibid. ' 



7. Thread-like ditto of the upper and under side of the larvae 



of Trichoptera. (Ibid.) Ibid. p. 56. 



8. Part of the body of the larva of a Libellula, laid open to show 



the tracheae. (Reaum.) a. a. a. Tracheae. VOL. IV. p. 66. 



9. Part of the imago of ditto. (Ibid.) a. Vesicles that 



terminate the tracheae, b. Oblong ditto. VOL. IV. p. 68. 



10. Pupa of Corethra culiciformis. (De Geer.) a. b. Vesicles 



connected with the tracheae, c. Tail. VOL. IV. p. 67. 



1 1 . Part of the head of Armadillo zonatus. a. Pseudo-spiracle. 



VOL. III. p. 493. 



3 VOL. IV. LETTER XXXVIII. 



