422 Explanation of Plates. 



Plate LXXXIV. Fig. 9 



Plate LXXXV. 



10. Larva just entered 4th instar 

 X about 8 (April 1915). 

 Fig. 11. Another specimen x about 5. 

 Figs. 12, 13, 14. Larva found on Simplon 



route, May 1915. 



Figs. 15, 16. Larva in last instar (April 27, 

 1915) X about 4. (E. C. Knight.) 



Fig. 17. Full-grown larva x about 4. (F. W. 

 Froliawk.) 



Fig. 18. Front view of larva, newlj^ moulted 

 into last instar. (F. W. Frohawk.) 



Fig. 19. Dorsal hairs of full-grown larva highly 

 magnified. (F. W. Frohawk.) 



Fig. 20. Pupa x 3. (F. W. Frohawk.) 



Fig. 21. Lenticle bristle and reticulations of 

 dorsal abdominal surface of pupa 

 highly magnified. (F. W. Fro- 

 hawk.) 



Plate LXXXVI. Fig. 22. Leaves eaten by young larvae of 



A. escheri X 4^. The opening of 

 entry and the excavated area are 

 well seen. 



Plate LXXXVII. Fig. 23. Egg and eggshell X 80. 



Plate LXXXVIII. Fig. 24. Micropyle x 350. (Clark.) 



Fig. 25. Larva on Astragalus exscapus (Main), 

 showing how it burrows into the 

 growing heart of the plant. 



Plate LXXXIX. Fig. 26. Skin of larva in 1st instar x 60. 



Plate XC. Fig. 27. Another specimen x 60. 



Plate XCI. Fig. 28. Skin of larva in 2nd instar x 29. 



Plate XCII. Fig. 29. Skin of larva in 3rd instar X 22. 



Plate XCIII. Fig. 30. Skin of larva in 4th instar x 20. 



Plate XCIV. Fig. 31. Skin of larva in 4th instar, last segment 

 X 35. 

 Fig. 32. Skin of larva in 4th instar. Honey-gland 

 region X 100. 



Plate XCV. Fig. 33. Skin of larva in last (5th) instar x 14. 



