CONTENTS. xi 



CHAPTER Xm. 



PAGE 



Habits and Structure of Insects (continued) . . . .91 



Spittle Insect, 97, 98 ; Cicada or Seventeen-year Locust, 99, 100. 



CHAPTER XIV. 



Habits and Structure of Insects (concluded) . . . .10] 



May Fly or Epliemera, 100-103 ; Caddis Worm, 104; fiaU Fly, 104, 105; Other 

 Galls, 106. 



CHAPTER XV. 



Spiders ......... 109 



Parts of a Spider, 110; Mouth Parts and Eyes, 111 ; Spinnerets, 112 ; Legs, 113; 

 Habits of some, 114; Net Building, 115; Ballooning Spiders, 116, 117; Egg 

 Cases, Young Spiders, 117, 118, Care for the Toun„', 119, 120. 



CHAPTER XVI. 



Daddy-long-legs, Centipedes, and Millipedes .... 121 



Daddy-long-legs, 121-128 ; Centipedes, 128, 124 ; Mouth, Parts of, 125 ; Millepedes, 

 126 ; How they lay their Eggs, and Young, 127; Comparison between Myrin- 

 pods and Insects, 127, 138 ; Some Characters of Insects, Spiders, and Myrionods, 

 139. 



CHAPTER XVII. 



Craw-Fish and Lobster ....... 130 



Craw-Fish, -where found, 180 ; Regions of, 131 ; Mouth Parts and Appendages, 132, 

 133; Gills, 184; How to arrange Parts, 186, 186 ; Moulttag, 187; Young Lob- 

 ster, 188. 



CHAPTER XVIII. 



Crabs, Hermit-Ckabs, and other Crustaceans . . . .138 



Common Crab, 139 ; Eggs, and how they carry them, 140 ; Fin-like Legs, Oyster 

 Crab, 141 ; Hermit Crab, 142-144; Fresh-water Crustaceans, 144; Sowbug and 

 Eggs, 145, 146; Regions of Crustacea, 146, 147. 



CHAPTER XIX. 



BiTALTE Crustaceans and Barnacles ... . HI 



Characters ot; 148, 149 ; "Where found, 160 ; Appendages, how they secure their 

 Food, 151 ; Young Barnacles, 163, 153. 



