LIST OF ILLUSTRATIONS 



FKJ. 



138. The caterpillar's many-hooked foot .... 206 



139. Portion of wing of May-fly 210 



140. Larva of May-fly ........ 212 



141. Exuvium of May-fly ....... 214 



142. Final emergence of May-fly . ..... 216 



143. May-fly (natural size) 218 



144. An alder-fly . . . . . . . . .219 



145. Eggs of alder-fly .... ... 220 



146. Larva of alder-fly . ....... 221 



147. A caddis-fly ......... 222 



148. A caddis-worm ........ 223 



149. Specimens of caddis-cases (natural size) . . . 224 



150. End of body of caddis-larva . ..... 226 



151. A dragon-fly (natural size) ...... 227 



152. Larva of dragon-fly 228 



153. Head of the larva of a dragon-fly .... 230 



154. Tips of wings of dragon-fly 231 



155. The face of a dragon-fly . . . . . . 232 



156. Palate of edible snail 235 



157. Teeth of edible snail ....... 236 



158. Palate of snail showing different forms of teeth . . 237 



159. Palate of slug 238 



160. Proboscis of blow-fly ....... 239 



161. Proboscis of hover-fly ....... 240 



162. Tongue of a butterfly . . . . . . .241 



163. Tongue of stag-beetle ....... 242 



164. Scales or dust from wing of moth . . . . 245 



165. Scales on butterfly's wing, in situ .... 246 



166. Hairs of "woolly-bear " caterpillar .... 247 



167. Hairs of a humble-bee ....... 248 



1 68. Leg of a tiger-moth ....... 249 



169. Skin of dog-fish 250 



170. Skin of sole ......... 251 



171. Skin of eel ......... 252 



172. Scale removed from eel-skin ..... 253 



173. Scale removed from gold-fish ..... 254 



174. Feather of humming-bird ...... 255 



