VUl CONTENTS. 



CHAPTER PAGE 



XIV. Net-veined Insects with an incomplete Metamorphosis. 99 



XV. The Bugs, or Sucking Insects 100 



XVI. The Net-veined Insects -with a complete Metamorphosis. 104 



XVII. The Beetles, or Sheath-winged Insects 105 



XVIII. The House-fly and other Two-winged Insects 109 



XIX. The Butterfly and other Scaly-winged Insects 116 



XX. The Bee and other Membrane-winged Insects 124 



XXI. Animals with a Backbone 139. 



XXII. The Skulless Vertebrates 139 



XXIII. The Purse gilled Vertebrates 143 



XXIV. The Sharks 145 



XXV. The Mailed Fishes ' 149 



XXVI. The Bony Fishes 153 



XXVII. TheLung-flsh 167 



XXVIII. The Salamander, Frog, and other Amphibians : . 169 



XXIX. The Lizards, Snakes, and other Reptiles 183 



XXX. The Birds 196 



XXXI. The Cat as a Type of the Mammals 317 



XXXII. The Reptilian Mammals 331 



XXXIII. The Marsupials or Pouched Mammals 334 



XXXIV. The Docile Mammals 337 



