722 EXPLANATION OF THE PLATES. 



FIG. 



8. Head of Pulex, with its antennae and trophi, or rostrulum. 



Side view. 

 9 # Araneidce, with the trunk. 



10. Trophi of ditto. 



11. Head of Scolopendra morsitans. Subface. 



22 . — < — Front view, to show the 



mouth. 



13. Trophi of ditto. 



14. Pharynx of Pentatoma. (Savigny.) 



PLATE VIII. 51 



1. Prothorax of Lucanus. a. Apex. b. Base, c d. Sides. 



a. Disk. 



2. Antepectus of ditto. 



3. Alitrunk of ditto. Upper side. a. A piece between the 



metathorax and metaphragm. 



4. — Under side. 



5. Abdomen. Upper side, or tergum. 

 Q. . Under side, or venter. 



7. Antepectus of Hydrophilus piceus. 



8. Alitrunk of ditto. Under side, to show the metasternum. 



9. Abdomen of Dynastes Aloeus, to show the dorsal and 



ventral spiracles. 



10. Prothorax of Locusta. a. Apex, b. Base, c c. Sides. 



11. Antepectus of ditto, to show the prosternum. 



12. Alitrunk of ditto. Upper side. 

 13. Under side. 



14. . — Lateral view. Vol. III. p. 48. 



15. Abdomen of ditto. Lateral view. 



16. Alitrunk of Cicada Latr. Upper side. 



17- ■ Under side. a. The piece in the 



9 corresponding to the drum-covers of the <$. 



18. Abdomen, and part of postpectus of $ ditto. Under 

 side, to show the drums. Vol. II. p. 405—. 



a Vol. III. p. 367—, 529—. IV. p. 326—. 



