CONTENTS. 



CHAPTER XI. 



PAGB 

 OF THE CLASS OF MYRIAPODA . . . ... 285 



ORDER , I. CHILOPODA 287 



ORDER IL CHILOGNATHA . . 289 



CHAPTER XII. 



OF THE CLASS OF CIRRHOPODA . . . . ... 291 



ORDER I. PEDUNCULATA 293 



ORDER II. SESSILIA 295 



CHAPTER XIII. 



OF THE VERMIFORM CLASSES ...... . 296 



CLASS OF ANNELIDA ......... 298 



ORDER I. DORSIBRANCHIATA 303 



ORDER II. TUBICOL/E 305 



ORDER III. TERRICOL*: ) 308 



ORDER IV. SUCTORIA 311 



CLASS OF ENTOZOA 313 



CLASS OF ROTIFERA ...... 317 



CHAPTER XIV. 



OF THE MOLLUSCA IN GENERAL ....... 326 



CHAPTER XV. 



OF THE CLASS OF CEPHALOPODA 338 



ORDER I. DIBRANCHIATA . . . . . 345 



ORDER II. TETRABRANCHIATA 352 



CHAPTER XVI. 



OF THE CLASS OF PTEROPODA 357 



OF THE CLASS OF HETEROPODA 359 



