LIST OF ILLUSTRATIONS 



xv 



Group of Hydractinia, 



Hydractinia on a Whelk-Shell, 



Millepora, . 



Hydra Monster, Artificially Produced, 



Chrysaora, . 



Ehizostoma, 



Periphylia, . 



Tessera, 



Monoxenia darwini, 



Development of Monoxenia, 



Sections of Monoxenia, 



Outline of Caulastrwa, 



Larvae of Sea- Anemone, . 



A Sea- Anemone (Actinia), 



Endive- Leaved Anemone, . 



Short- Ten tacled Anemone, 



Parasitic Anemone (Palythoa), on Glass 



Rope Sponge, . 

 Palythoa axinellcc, . 

 A Simple Coral (Thecocyathus), 

 Scarlet Crisp Coral (Flabellum), 

 Mushroom-Coral (Fungia), 

 A Deep-Sea Coral (Leptopenus), 

 A Branching Coral (Dendrophyllia), 

 A Madrepore Coral (Madreporia), 

 A Massive Coral (Astroides), 

 Developmental Stages of Astroides, 

 A Star-Coral (Astr&a), 

 A Brain-Coral (Meandrina), 

 Mouths of Brain-Coral, 

 A Horny Coral (Antipathes), 

 An Alcyonarian Coral (Alcyonium), 

 A Sea-Pen (Pteroides), 

 Umbellula thompsoni, 

 Umbellula encrinus, 

 A Sea-Fan (Gorgonia), 

 Corkscrew Sea-Fan (Streptocaulus), 

 Red Coral, .... 

 Organ-Pipe Coral (Tabipora), 

 Structure of Tubipora, 

 Island with Fringing- and Barrier-Reefs, 

 Coral- Island, or Atoll, 

 Section through a Coral- Reef, 

 Diagram Explaining Theory of Subsidence 

 Outline of the Island of Aiva, 

 Mouths of Madrepore, 

 Bread-Crumb Sponge, Showing Currents, 

 Flagellated Chambers of Sponges, 

 Sponges Growing on Seaweed, 

 Carpenter's Glass- Sponge, 

 Structure of Venus' Flower-Basket, 

 An Ascon Sponge, . 

 Structure of Toilet-Sponge, 

 Calcareous Ascon Sponge (Leucosolenia), 



PAOK 



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