EXPLANATION OF THE PLATES. 599 
FIG. 
10, Alitrunk and part of elytra and wings of Melolontha hor- 
ticola. 
1]. tegmina and wings of Fulgora later- 
naria. Postfrenum funiculate, with an elastic part 
marked a. Vot. III. p. 560. 
12% hemelytra and wings of Pentatoma. 
13. wings of Panorpa. 
14. Trichoptera. 
15. 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.? 
. Gills of a spider. (Treviran.) 
— Scorpio europeus. (Ibid.) 
3, Aeriducts of larva of Ephemera fusco grisea. (De Geer.) 
Vot. IV. p. 58. 
Lo 
A, vespertina. (Ibid.) Ibid. 
5. vulgata. (Ibid.) Ibid. 
6. Siallis lutaria. (Ibid.) Ibid. 
SO 
ae Thread like ditto of the upper and under side of the larvee 
of Trichoptera. (Ibid.) Ibid. p. 56. 
8. Part of the body of the larva of a Libellula, laid open to 
show the trachez. (Reaum.) a.a.a.Trachex. Vou. IV. 
p. 65. 
9. Part of the imago of ditto. (Ibid.) a. Vesicles that 
@ Vor. IV. Lerrer XXXVITI. 
