ILLUSTRATIONS. 
PLATES. 
Page. 
Plate I. Fig. 1. — The Colorado potato beetle (Leptinotarsa decemlineata) at- 
tacking seed potato in ground, Churchland, Va. Fig. 2. — Young 
potato plant defoliated by Colorado potato beetles 2 
II . Potatoes growing in new ground, showing bar to employment of power 
sprayers 6 
III. Hop leaves, showing effect of attack by the hop flea-beetle (Psylli- 
odes punctulata) 42 
IV. Fig. 1. — Hindoo using tarred board and evergreen brush to destroy 
hop flea-beetles. Fig. 2. — Method of using light, sticky shield 
and feather duster in combating the hop flea-beetle 50 
TEXT FIGURES. 
Fig. 1. The parsnip leaf-miner (Acidia fratria Loew): Adult, larva, puparium, 
details 10 
2. Parsnip leaves showing work of parsnip leaf-miner. 12 
3. The parsley stalk weevil (Listronotus latiusculus Bon.): Adult, larva, 
pupa 15 
4. Parsley roots showing work of parsley stalk weevil 17 
5. The celery caterpillar (Papilio polyxenes) : Male butterfly, egg, larva, 
chrysalis, details 21 
6. The celery caterpillar: Female butterfly 22 
7. The Lima-bean pod-borer (Etiella zinclcenella): Adults, larva, details. . 26 
8. The hop flea-beetle (Psylliodes punctulata): Eggs 34 
9. The hop flea-beetle: Larva, pupa 36 
10. The hop flea-beetle: Adult beetles, showing relative size of female 
and male 37 
11. The hop flea-beetle: Ovipositor of female. ' 37 
12. Filamentous roots of hop vine on which the hop flea-beetle larvae 
feed 39 
13. Hindoo using tarred hand sledge for capture of hop flea-beetles 50 
14. Banded hop vine, showing condition of leaves above and below the 
band 51 
15. Killing the hop flea-beetles in the poles 52 
16. Fumigating the trellis poles to destroy hop flea-beetles 55 
17. Roiling the hopyards with heavy roller as an experiment in the con- 
trol of the hop flea-beetle 56 
18. The yellow-bear caterpillar (Diacrisia virginica): Female moth, larvae, 
cocoon, pupa 60 
19. The saddled cucumber beetle (Diabrotica connexa) : Beetle 68 
20. The painted cucumber beetle (Diabrotica picticcrnis) : Beetle 69 
21. The belted cucumber beetle (Diabrotica balteata): Eggs, larva, pupa, 
beetle, details 70 
22. The western twelve-spotted cucumber beetle (Diabrotica soror): Female 
beetle 73 
23. The western twelve-spotted cucumber beetle: Eggs 74 
24. Euthyrhynchus fioridanus, an enemy of the Colorado potato beetle: 
Adult. . . . 86 
IX 
