CONTENTS 



CTENOPHOEA 

 CHAPTER XV 



PAGE 



Ctenophoea 412 



ECHIKODEEMATA 

 CHAPTER XVI 



ECHINODERMATA — INTRODUCTION — CLASSIFICATION — AUATOMT 01? A STAR- 

 FISH — Systematic Account of Asteroidea 427 



CHAPTER XVII 

 Echinodermata (coat/jve/bb) : Ophiuroidea = Brittle Stars . . . 477 



CHAPTER XVIII 

 Echinodermata (co.vr/jvtTEi)) : Eohinoidea=Sea-Urchins .... 503 



CHAPTER XIX 



EcHINODERMATA (COjVr/iVrflBZ)) : H0LOTHUROrDEA = SEA-ClTCUMBEES . . 560 



CHAPTER XX 



ECHINODEEMATA {OOlfTINUEB) : PeLMATOZOA — CeINOIDEA = SeA - LiLIES — 



Theooidea — Carpoidea — Cystoidea — Blastoidea .... 579 

 CHAPTER XXI 



EOHINODERMATA (OOlfTIlfUED) : DEVELOPMENT AND PhYLOGENY . . . 601 



INDEX 625 



