CONTENTS 



PART II 



TFfE BREEDING HABITS; LIFE-HISTORY AND STRUCTURE 



OF THE LARVA 



CHAPTER PAGE 



VL The Breeding Habits of Musca domestica ... 87 

 Historical, 87. Materials in which M. domestica 

 breeds, 94. Location of Breeding Place, 95. Breeding 

 season, 95. Abundance of Flies in relation to Breeding 

 Places, 96. 



VIL The Life-history of the House-fly .... 98 

 Proportion of sexes, 98. Copulation, 98. Oviposition, 

 99. Egg, 101. Larva, 102. Pupa, 105. Emergence of 

 adult fly, 108. Summary of duration of development, 108. 

 Factors governing development, 110. Sexual maturity, 

 112. Number of generations, 113. 



VIII. The External Features of the Full-grown Larva . 115 



IX,- The Internal Structure of the Full-grown Larva, 120 

 Muscular system, 120. Nervous system, 127. Sensory 

 Organs, 132. Alimentary system, 132. Cephalo-pha- 

 ryngeal sclerites, 134. Respiratory system, 140. Vascular 

 system and body cavity, 143. Imaginal Discs, 145. 



PART III 



THE NATURAL ENEMIES AND PARASITES OF THE 



HOUSE-FLY 



X. Arachnids and Myrtapods 151 



Chernes nodosu.% 150. Mites borne by House-flies, 

 • 154, Centipedes and Spiders, 158. 



XI. The Fungal Disease: Empusa muscae Cohn. . . 160 



XII. Insect and Vertebrate Enemies 167 



Parasitic Insects, 167. Predaceous Insects, 170. 

 Vertebrate Enemies, 172. 



XIII. Protozoal Parasites 173 



Herpetomonas muscae-domestieue, 173. Crithidia rmtscae- 

 domesticae, 178. Leptomonas muscae-do77iesticae, 180. 



XIV. The Parasitic Nematode: Hahronema muscae Carter 181 



