Contents 



CHAPTER VI 



PAGE 



Dragon-flif.s and Damsel-flies (Order Odonata) 75 



Charartcristks and distribution of dragon-flics, 76. Structure of adults, 79. 

 Habits, 81. Life-history, 84. Methods of collecting and studying, 87. Various 

 kinds of dragon-flies, 89' Keys to suborders, 89. Key to families of Zygoptera, 

 89. Key to families of Anisoplera, 91. 



CHAPTER VII 



Termites or White Ants (Order Isoptera) 99 



Characteristics and structure of Termites, gg. Life-histor)-, loi. Key to 

 genera, 102. Habits and characteristics of various kinds of termites, 102. 

 Termites of Africa, 106. The problem of caste determination, 108. The 

 Embiida:, log. 



CHAPTER VIII 



Book-lice and Bark-lice (Order Corrodentia) and the Biting Bird-lice 



(Order Mallophaga) in 



Structure and life-history of book-lice, iii. Keys to families and genera, 

 112. Characteristics and life-history of bird-lice, 113. Problems of distri- 

 bution, 116. Keys to suborders, families, and genera, 118. Various species, 

 119. 



CHAPTER IX 



The Cockroaches, Crickets, Locusts, Grasshoppers, and Katydids (Order 



Orthoptera) 123 



Sounds of crickets, etc., 123. Key to families, 126. Cockroaches or Blat- 

 tida;, 126. Mantida;, 129. Phasmida;, 132. Key to genera of Phasmidae, 

 132. Locusts (Acridiida;), 133. Sounds of locusts, 134. Life-histon,' of 

 locusts, 136. Key to subfamilies of Acridiida;, 136. Rocky Mountain locust, 

 137. Various kinds of locusts, 140. Locustidas, 149. Various kinds, 150. 

 Crickets (Grj'Uidje), 157. Sound-making of crickets, 157. Ear-wigs (Forficu- 

 lida;), 162. 



CHAPTER X 



The Trce Bugs, Cicadas, Aphids, Scale-insects, etc. (Order Hemiptera), 



and the Thrips (Order Thys,\noptera) 163 



Characteristics of Hemiptera, 164. Key to suborders, 165. Key to families 

 of Homoptcra, 166. Cicadas (Cicadida;), 166. Tree-hoppers (Membracid;e) 

 and lantern-flies (Fulgorida-), 168. Leaf-hoppers (Jassida:), 169. Spittle 

 insects (Cercopida;), 170. Jumping plant-lice (Psyllids), 171. Plant-lice 

 (.•Vphidiida;), 171. Grape-phylloxera, 176. Scale-insects (Coccida?), 180. San 

 Josd scale, 181. Remedies for scale-insects, 189. Mealy-winged flies (.Meyro- 

 dida;'), 190. Key to families of Hetcroptera, 194. Water-striders (Hydrota- 

 tidx), 196. Water-boatmen (Corisidx), 198. Back-swimmers (Notonei tida), 



