TABLE OP CONTENTS. 



INTRODUCTION i-Cxli 



TERMINOLOGY ii 



GENERAL, PLAN OF STRUCTURE iv 



THE ZOCECIUM vi 



ECTOCYST vii 



COMMUNICATION-PLATES viii 



ENDOCYST x 



THE POLYPIDE xiii 



TENTACULAR CROWN AND SHEATH xiv 



ALIMENTARY CANAL xviii 



NERVOUS SYSTEM xxvii 



MUSCULAR SYSTEM xxix 



THE PEBIOASTRIC CAVITY xxxiii 



THE ENDOSARC xxxv 



FAJX AND RENEWAL OF THE POLYPLDE. THE " BROWN 



BODY " lii 



MODIFICATIONS OF THE ZOCECIAL TYPE. AVICULARIUM Ixiv 



VlBRACULUM Ixiil 



POLYPIDE OF THE ENTOPROCTA . . Ixxxiv 



