vi Contents. 



SPECIAL PART. 



FAQE 



Protozoa. ... . . .85 



Class 1. Gymnomyxa (Swrcodina) 8' 



Order 1. Bhizopoda . °' 



Order 2. Eadiolaria . ^^ 



Class 2. Infusoria (CiUata) 91 



Class 3. Gregarinida • ^^ 



Coelentera ...... 9s 



Class 1. , Hydrozoa ^'^^ 



Order 1. Hydromedusse (Craspedota) . . 103 



Order 2. Siphonopliora .... 107 



Order 3. Aoalepha (Scyphomediisss, Acra^eda ) . 109 



Class 2. Anthozoa m 



Order 1. Aloyonaria (Octactimo) .. 113 



Order 2. Zoamtharia (PoVyactima) ) . 115 



Class 3. Ctenophora n* 



Appendix to the Coelentera, Spougiae or Porifera . 118 



Echinoderma 122 



Class 1. Crinoidea (Sea-LUies). 127 



Class 2. Asteroidea . 130 



Order 1. Asterida 131 



Order 2. Ophimida 133 



Class 3.' EcMnoidea. ... 134 



Order 1, EcMnoidea Eegnilaria . . 138 



Order 2. EcMnoidea Irregularia . 138 



Class*. Holothuroidea 138 



Platyhelmintliia 142 



Class 1. TTirbellaria 143 



Class 2. Trematoda . . ... 145 



Order 1. Polystomese (Monogenetic Trematodes) 146 



Order 2. Distomese (Digenetic Trematodes) 147 



Class 3. Cestoda 149 



Class 4. Nemertinea (Rhynchoccela) . . . 153 



Appendix to the PlatyhelmintMa : Kotifera 156 



Nemathelminthia . 



Class 1. Nematoda . 



Class 2. Acanthocephala 



Annelida 



Class 1. Chsetopoda . 



Order 1. Polychseta 

 Order 2. Oligochseta 



158 

 158 

 163 



165 

 167 

 172 

 173 



Appendix to the Chsetopoda : Gephyrea 174 



Class 2. Discophora. ... 175 



Class 3. Onycliopliora 177 



