CONTENTS. 



Preface , 



Introduction 



ADULT COLONY. 

 External Characters 



Column wall 



Tentacles 



Disc and mouth 



Color 



Reproduction 



External characters on decalcification 



Anatomy and Histology 



Column wall and disc 



Tentacles 



Stomocheum 



Mesenteries , 



Mesenterial filaments 



Skeletotrophic tissues 



Septal invaginations, interseptal loculi, 

 and gastro-crelomic cavity 



Gonads 



Corallum 



Histology 



Wall or theca 



Septa 



Synapticula 



Columella 



Dissepiments 



Epitheca and basal plate 



9 

 H 

 15 

 16 



18 



21 

 21 

 23 



23 



24 



2 9 

 30 



34 

 37 

 38 

 4 



45 

 46 



52 

 53 

 55 

 56 



POSTLARVAL DEVELOPMENT. 



Larva 5-7 



Young polyp 61 



Tentacles 65 



First cycle of exotentacles 65 



First cycle of entotentacles 66 



Secondary exotentacles 69 



Second cycle of entotentacles and third 



cycle of exotentacles 71 



Third cycle of entotentacles and fourth 



cycle of exotentacles 73 



Mesenteries 76 



First cycle of mesenteries (protocnemes)... 76 

 Second cycle of mesenteries (metacnemes) 79 



Third cycle of mesenteries 83 



Corallum 86 



First cycle of entosepta and second cycle 



of exosepta 86 



Second cycle of entosepta and third cycle 



of exosepta 93 



Third cycle of entosepta and fourth cycle 



of exosepta 99 



Basal plate na 



Epitheca 115 



Columella 117 



Anatomy and histology of larva and young 



polyp 119 



Young polyps 122 



References 125 



Explanation of plates 126 



iii 



