CONTENTS 



CHAPTER P AGE 



I. CLASSIFICATION i 



II. ANATOMY AND PHYSIOLOGY -. 27 



III. DEVELOPMENT 146 



IV. ADAPTATIONS OF AQUATIC INSECTS 184 



V. COLOR AND COLORATION 193 



VI. ADAPTIVE COLORATION 216 



VII. ORIGIN OF ADAPTATIONS AND OF SPECIES 237 



VIII. INSECTS IN RELATION TO PLANTS 252 



IX. INSECTS IN RELATION TO OTHER ANIMALS 276 



X. INTERRELATIONS OF INSECTS 307 



XL INSECT BEHAVIOR 345 



XII. DISTRIBUTION 366 



XIII. INSECTS IN RELATION TO MAN 393 



LITERATURE '. 409 



INDEX v 467 



