vi CONTENTS. 



PAGE 



Decapoda 164 



Tetradecapoda 168 



Dissection of Grasshopper 170 



Dissection of Cricket 176 



Dissection of June-bug 177 



Dissection of Dragon-fly 178 



Dissection of Bee or Wasp 179 



Comparisons of Mandibulatae 179 



Orthoptera 181 



oleoptera 184 



Hymenoptera 188 



Dissection of Squash-bug 192 



Dissection of Butterfly 193 



Comparisons of Haustellatae 193 



Hemiptera 194 



Lepidoptera 199 



Comparisons of Arthropods 205 



Crustacea 208 



Hexapoda 213 



Comparisons of Arthropods 225 



Arthropoda 226 



Dissection of Earthworm 235 



Comparisons of Segmented Animals 238 



Annelida 239 



Vermes 242 



Dissection of Clam 248 



Dissection of Oyster 251 



Dissection of Squid 252 



Comparisons of Molluscs 256 



Acephala 258 



Cephalopoda 264 



Comparisons of Mollusca 268 



Mollusca 269 



Dissection of Starfish 278 



Dissection of Sea-urchin 282 



Comparisons of Echinoderms 284 



Asteroida 285 



Echinoida 288 



Comparisons of Echinoderms 290 



