CONTENTS. 



Pa ■■ 



Introduction 103 



PART I. 



Generai Morphology 409 



Column Wall 409 



Randplatte or Edge-zone, Coenosarc, Ccenenchyme 411 



Form and Anatomy 413 



Ecti iderm 415 



Mesoglwa 416 



Endoderm and Sphincter muscle 416 



Expansion and Retraction of Polyps 418 



Tentacles 421 



Tentacles of Madrepora and Pontes '. 426 



Tentacles of SUderastra n and Agorieia 427 



< trder of appearance of Prototentacles 430 



Metatentacles 432 



Oral Disk 432 



Mouth and Stomodseum 435 



Coloration 437 



Mesenteries 440 



Mesenteries in genera reproducing by Budding 446 



Mesenteries in genera reproducing by Fission 448 



Development of Protocnemes 450 



First cycle of Metacnemes 455 



Second cycle of Metacnemes 459 



Appearance of Mesenteries in Polyps reproducing by Fission 465 



Increase of Mesenteries in Porites 466 



Increase of Mesenteries in Madrepora 471 



Mesenterial Filaments 471 



Glandular modifications 473 



Mesenterial Filaments of Madrepora and Porites 474 



Extrusion of .Mesenteries and Filaments 475 



Origin of Mesenterial Filaments 476 



Basal Disk, Skeletotrophic or Skeletogenic tissues 479 



End. iderm 4S0 



Mesogli ea 481 



Ectoderm or Calicoblast layer - 482 



Gastro-Ccelomic Cavity 485 



Synapticula 487 



Columella 490 



( h'der of appearance of Septa 490 



Protosepta 490 



Metasepta 493 



Asexual reproduction 495 



Budding in Madrepora 497 



Budding in Soh nastrsca 499 



Budding in ' 'ludnrora 501 



Fission in Mardeina 502 



Fission in Fatria 508 



Kissi< >n in Porites 513 



Fission in Madrepora 515 



401 



