X SOME INSECTS INJURIOUS TO TRUCK CROPS. 



Page. 

 Fig. 9. The semitropical army worm: Work of larvse on "careless weed" in 



potato field 59 



10. The semitropical army worm: Field of late Irish potatoes, showing 



vines entirely stripped by larvse 60 



11. The semitropical army worm: Larvae eating bark of "careless weed;" 



also nymph of spiued soldier-bug (Podisvs maculiventris), predaceous 



on larvse of Frodenin cridania 61 



12. Hop flea-beetle {PsylUodes punctulata): Larva and adult 72 



13. View of hopyard, showing how flea-beetles keep down vines 76 



14. Hop leaves, showing work of flea-beetle 77 



15. \\'ork of flea-beetle after vines are grown 78 



16. Trained hop shoots stripped by flea-beetle 79 



17. Breeding and control cage in place over a hill 80 



18. A crew spraying hops in British Columbia 86 



19. Tarred catchers for hop flea-beetles 89 



ERRATA 



Page 2, line 19, for 1861 read 1S69. 



Page 2, footnote a, for 160 read 46. 



Page 18, line 11, for 1S93 read 1903. 



Page 18, line 22, for letter read latter. 



Page 65, line 15 from bottom, ior fresh air-slaked resid freshly slaked. 



Page 68, line 8, for 6 read 50. 



