CONTENTS vii 



AKCHIANNELIDA, POLYCHAETA, AND 

 MYZOSTOMAEIA 



CHAPTER IX 



PAGE 



The Ghaetopodous Worms The Archiannelida Anatomy of Nereis 



as Typical of the Polychaeta 241 



CHAPTER X 



Classification of the Polychaeta Shape Head Parapodia 

 Chaetae Gills Internal Organs Jaws Sense Organs 

 Reproduction Larval Forms Budding Fission Branching 

 Regeneration 257 



CHAPTER XI 



Natural History of Polychaetes General Habits Character of 

 Tube and its Formation Colouring Protective and Mimetic 

 Devices Phosphorescence Food Uses Associated Worms 

 Worms as Hosts Distribution Fossil Remains .... 284 



CHAPTER XII 



Characters of the Sub-Orders of Polychaetes Characters of thr 



Families Description of British Genera and Species : The Myzo- 

 stomaria 303 



OLIGOCHAETA (EAKTHWOKMS, ETC.), AND 

 HIKUDINEA (LEECHES) 



CHAPTER XIII 



OLIGOCHAETA (EARTHWORMS AND THEIR ALLIES) 



Introduction Anatomy Reproduction Bionomics Distribution 



Classification Microdrili and Meoadrili 347 



CHAPTER XIV 



HIRUDINS a (leeches) 



Introduction Anatomy Reproduction Classification Rhyncho- 



bdellae and gnathobdella e ' . 392 



