FAM. LOCUSTID.L 



EXPLANATION OF PLATE 



Fig. i. Head showing horizontal type of fastigium of the vertex. 



— 2. — — vertical type of fastigium of the vertex. 



3. Frontal view of head showing the fastigium of the vertex and that of the front meeting in a line. 



4. Frontal view of head showing the fastigium of the vertex and that of the front meeting in a point. 



— 5. Tarsus showing the free plantula beneath the first joint. 



— 6. — laterally smooth segments. 



— 7. — — sulcate segments. 



— 8. Tibia; showing open foramina. 



— 9. — — shell-shaped or ear-like foramina. 



— 10. — — linear foramina. 



— 11. Elytron illustrating venation. 



— 12. Same. 



— i3. Wing illustrating venation. 



— 14. Prophalangopsis obscura, Walker ((j*). 



— i5. Pronotum showing ordinary form. 



— 16. — hooded form. 



Washington, U. S. A., i5th June 191 1. 



