CHAPTER II. 



THE A X T II O Z O A. 



PAGE 



Zoantharia and Alcyonaria- Characters THE ZOANTHARIA The White Stony Corals or Madreporaria -Structure 

 The Coral Development The Reef-builders Coral Islands- -MAD KEPOKAKIA APOROSA Turbinolid;e Oculinidaj 

 Astrajida; Eusmilinse Eupliylliaceae Stylinaceae Lithophylliaceae Astrseaceas Cladocoracerc Fungidm- - 

 MADREPOKAKIA PERFORATA Eupsamminse Poritidae- Other Groups of the Madreporaria ANTIPATHAKIA OR 

 SCLEKOBASIC ZOANTHARIA ACTINARIA OR MALACODERMIC ZoANTHAKiA Characters- Actuiidse Minyadiuaj 

 Acfciniiue The Sea Anemones THE ALCYONARIA Characters Helioporidae Penuatulidae or Sea-Pens 

 GORC; >XID.E Red Coral Formation - Gorgoninaj Characters Various Genera Alcyonidse Distinctive Features 

 Organ-pipe Coral Alcyoninae Dead Man's Fingers Classification of Anthozoa 294 



THE GROUP SPONGLSJ. 



The Turkey Bath Sponge as a Type Its Structure and Embryology - Its Mode of Life Specific Distinction and Existing 

 Distribution Sponge-farming Forms and Colour of Sponges The Individuality Question Different Types of 

 Canal System The Three Primary Layers The Skeleton Spicule Forms Embryological Development Affinities 

 of the Sponges Their Classification General Characters of Existing Families - Their Distribution in Space and Time 312 



THE RHIZOPODA. 



The Rhizopods Appearance Protoplasm or Sarcode Its Character and Functions The "Contractile Vesicle " - 

 Amvcba and Moncra True " Cells "Assimilation of Food Contents of the Endosarc The ' ' Vacuoles " Food 

 of the Amoeba- Naked Lobose Rhizopods Shelled Lobose Rhizopods Sun-animalcules Actinophrys so? The 

 Kadiolaria- -The Polycistina The Reticularia The Foraminifera Imperforate or Porcellanous Foraminifera 

 Perforate or Vitreous "Forams" The Flagellata Grega rinse The Link Connecting the Rhizopods and Verte- 

 brates Bibliography Classification 332 



TYPE PROTOZOA. CLASS INFUSORIA (INFUSORY ANIMALCULES). 



Microscopic Animals One Cause of the Phosphorescence of the Sea and ef the Discoloration of "Water The Life in 

 Infusions Characters of the Infusoria Example of Ciliate Infusorians The Slipper Animalcules Their Con- 

 struction The Flagellate Order Features Cercomonas The Cilio-flagellate Infusorians Characters The 

 Animalcules of the Ponds in Phoenix Park, Dublin Mdodinium Cerctium The Order Tentaculifera 

 Characters Afincta Classification The Ectoplasm The Endoplasm Origin of the Cilia, Flagella, and Ten- 

 taclesHow Infusorians Feed Action and Function of the Contractile Vesicle The Nucleus or Endoplast 

 The Colours of Infusoria The Coloration of Waters - Trichocysts Reproduction by Fission, Gemmation, and 

 otherwise - Distribution - TENTACULIFERA SUCTORIA AcTlNARlA CILIATA HOLOTRICHA Paramecium 

 Prorodontidiu Trachelocercidse Ichthyophthiriidffi Colepidse Ophryoglenidaj Pleuronemidse Lembidae 

 Family Discovered by Leidy Opalinidre HETKROTRICHA The Largest Infusoria Spirostomum ambitjuum 

 Conili't'ixtoiint /Kitcn-sStcntor jwlitmorjih us- PERITRICHA Haltcria i/randincllaUroccntrum turbo The "Bell ' 

 Animalcules Genera with Vorticella-like Animalcules HYPOTRICHA CILIO-FLAGELLATA FLAGELLATA 

 Noctiluca miliaris . . 353 



VOL \l.-b 



