24 



Attagenns piceup, descriptifni of, VIII, 18. 



effect of alternation of temperature on, IX, 19. 

 experiments with cold on, YI, IH. 



feeding on flour, meal, and timothy SL>ed, II, 37; VIII, 15. 

 habits of, IV, 61. 

 history of, in America, VIII, 17. 

 injuring bolting cloth, II, 87; VIII, 16. 

 in cereals, IV, 129. 

 remedies for, IV, 63. 

 Aulacaspis rosa-, in 'xeorgia, XXVI, 51. 

 Iowa, VI, 79. 

 injuring raspberry and blackberry, VI, 77. 

 Bacillus insectorum, infesting the chinch bug, XV, 51. 

 Baterial disease of grasshoppers in Colorado, VI, 89. 

 Bieotomus subapterus, parasite of Hessian fly, XVI, 32. 

 Bassus hetorius, parasite of Allograpta obliqua, XXVI, 71. 



Nectarophora destructor, XX, 98. 

 Bathythrix pimpliB, parasite of Orgyia leucostigma, IX, 16. 

 Batrachedra rileyi, bred from cotton bolls and from corn, VIII, 3.'). 

 Bee, Carniolan, I, 17. 



colonies, increase of, I, 95. 

 common honey, I, 15. 

 Cyprian, I, 15. 

 German, I, 18. 

 Indian, I, 12, 13. 

 Italian, I, 16. 

 Bees, as cross fertilizers, I, 62. 

 colonies of, I, 19. 

 diseases and enemies of, I, 112. 

 drone, I, 30. 

 manipulating, I, 31, 69. 

 moving of, I, 37. 

 pasturage of, I, 56. 

 products of, I, 21. 

 robber, I, 116. 

 wintering of, I, 106. 

 worker, I, 29. 

 Belostoma americanum, hibernation of, XXII, 108. 

 Bii'd lice, general habits and remedies, V, 189. 

 Birds, eating Dendroctonus, XXVIII, 25. 



that feed on hairy caterpillars, XX, 92. 

 See Insectivorous birds. 

 Bisulphide of carl)on, fumigating with, XXX, 78. 

 Bittacus pilicornis, catching flies, VII, 86 

 Black flies, general account of, V, 31. 

 Black fly = Simulium molestum. 

 Black holes, what they are, VII, 9. 

 Blastophaga grossorum, notes on, XX, 29. 



in California, present condition of, XXVI, 16. 

 Blastothrix longipennis, hosts of, VII, 63. 

 Blissus doria?, habits of, in Europe, XV, 75. 



leucopterus, condition of, in Ohio in 1897, IX, 39. 

 damage l)y, in New York, VI, 59. 

 distriliution of, XY, 66. 



