INDEX. 



iEschna, habitat of, 43, 80; hab- 

 its of, 127. 



^schna eonstricta, 75, 80. 



^schna heros, 12, 44, 75, 80, 

 114. 



jEschna verticaUs, habits of, 

 127. 



Agabus geoffria, 47. 



Agrion, habits of, 43, 126. 



Agriou mercuriale, 44. 



Algse on mosquitoes, 62. 



Anax Junius, 12, 47, 75, 77, 80, 

 81. 



Aquatic birds, 119. 



Austrahan coccinella devouring 

 plant hce, 20, 91. 



Bacillus anthracis, 55, 56. 



Bats, 62. 



Beer yeast, use of, against plant 



lice, 119. 

 Birds, protection of, 94. 

 Bombyx mori (silk worm), 89. 



Caddis fly, 77. 



Callosamia promethea, 89. 



Calopteryx virgo, 126. 



Cannibalism among dragon fly 

 larvae, 47, 63, 116, 118. 



Can the mosquito be extermi- 

 nated, 137. 



Carnivorous fish, 13. 



Cermatia (centipede), habits of, 

 91. 



Coal oil, use of, 58, 62, 65, 120, 

 122, 124. 



Coccinellida?, 20, 91. 



Contagion, 54, 56, 93. 



Cordulia epitheca, 12. 



Corduligaster, habits and habi- 

 tat, 43. 



Cyclops, 30. 



Cyprinodonts, 13. 



Cypris, 30. 



Danaus archippus, 82, 90. 

 Datana larvae, 82. 

 Destruction by insects, 25. 

 Destructive insects, number of, 



25. 

 Dermestes, 89. 



" Devil's darning needle," 132. 

 Diplax, 12, 45, 77, 126. 

 Diplax berenice, 12, 75, 77, 116. 

 Diplax rubicundula, 45, 78, 116, 



126 ; period of hatching, 45. 

 Diptera (flies), number of North 



American species, 81. 

 Distribution of mosquitoes, 35, 



139. 

 Diurnal Lepidoptera, breeding 



of 90. 



(199) 



