xiv Contents. 



CHAPTER XXI. 



PAGE 



Myriopoda, Centipedes, and Gally-Worms . . . .112 



CHAPTER XXII. 

 Insecta: Insects General Characters and Structure . .115 



CHAPTER XXIII. 



Orders of Insects whose Metamorphoses are imperfect 

 Aphides, Bugs, Straight-winged Insects and Dragon- 

 Flies . ... . I2 3 



CHAPTER XXIV. 



Insects whose Metamorphoses are complete 



INDEX and GLOSSARY 137 



