21 



Aphididse, effect of hot weather on, IX, 19. 



scarcity of, in the Tropics, IX, 19. 

 Aphidius fletcheri, parasite of Nectarophora destructor, XXIII, 36. 



washingtonensis, bred from Nectarophora destructor, XXVI, 70. 



Aphis brassiere, abundant in Maryland in 1897, IX, 81. 



in Colorado, XXVI, 79. 



not abundant in Georgia, XX, 59. 



forbesi, destructive in Maryland, XX, 66. 



gossypii, abundant on cantaloupe, IX, 81. 



damage by, in Maryland, VI, 65; XX, 65; XXVI, 82. 

 injurious in Georgia, XX, 59. 

 in 1900, XXX, 71. 

 mali, attacking apples in Norway, IX, 80. 



killed by hydrocyanic-acid gas, XVII, 42. 

 scarcity of, in New York, VI, 54. 

 unusually abundant in Maryland, XXVI, 80. 

 work of, in Delaware, XXVI, 67. 

 persicae, in Massachusetts, XXX, 98. 

 persicre-niger, abundant in Maryland in 1897, IX, 81. 

 prunicola, abundant in Maryland, XVII, 98. 



killed by hydrocyanic-acid gas, XVII, 42. 

 on peach in Maryland, XXVI, 84. 

 rare in Maryland, XX, 66. 

 rosa?, injuring roses in Norway, IX, 80. 

 ulmane, injurious in Egypt, XXII, 100. 

 Aphodius granarius, on violets, XXVII, 83. 

 Aphycus flavus, parasite of Pulvinaria acericola, XXII, 23. 



hederaceus, parasite of Pulvinaria acericola, XXII, 23. 

 pulvinarire, hosts of, VII, 63. 



parasite on plum scale, II, 90. 

 Apiary, establishing an, I, 35. 

 Apiculture, books relating to, I, 118. 



Apion segnipes, bred from seeds of Tephrosia spicata, VII, 85. 

 Apis dorsata, I, 13. 

 florea, I, 13. 

 indica, I, 12. 

 mellifica, I, 15. 



in Porto Rico, XXII, 90. 

 Apoderus coryli, injuring Alnus in Norway, IX, 80. 

 Arrecerus fasciculatus, habits and life history of, VIII, 36. 



in groceries, IV, 129. 

 Aramigus fulleri, account of, XXVII, 88. 



in the Hawaiian Islands, XXX, 88. 

 Archenomus bicolor, parasite of Diaspis pentagona, XVII, 101. 

 Archytas analis, parasite of Peridroma saucia, XXIX, 61. 

 Arctia nais, on violets, XXVII, 82. 

 Argas americana, pest of chickens, V, 256. 

 moubata, mention of, V, 256. 

 persicus, mention of, V, 256. 



notes on, XXVI, 48. 

 reflexus, parasite on pigeons, V, 255. 

 talaje, mention of, V, 256. 

 Argynnis (species), on violets, XXVII, 79. 

 Armadillidium armadillo, on violets, XXVII, 82. 



