CONTENTS 



PAGE 



PROTOZOA 1 



Saecodina 6 



Amoeba proteus 6 



Foramimf era 7 



Actinosphaerium or Actinophrys 7 



Mastigophora 9 



Euglena 9 



Volvox 9 



Ceratium 10 



Noctiluca 11 



Sporozoa 12 



Gregarina 12 



Infusoria 13 



Paramecium 13 



Spirostomum 14 



Vorticella 15 



Oxytricha 16 



Ephelota 17 



PORIFERA 19 



Grantia 20 



CCELENTERATA 24 



Hydrozoa 26 



Hydra (Fresh-water Polyp) 26 



Obelia 28 



Campanularia 29 



Sertularia 31 



Gonionemus 31 



Tubularia (Parypha) 33 



Bougainvillia 35 



Hydractinia 36 



Hydrocorallina 37 



Siphonophora 37 



SCYPHOZOA 37 



Aurelia 37 



ACTINOZOA 41 



Metridium (Sea- Anemone) 41 



CTENOPHORA. ^ 44 



Pleurobrachia 44 



PLATYHELMINTHES 47 



TURBELLARIA 48 



Planaria maculata 48 



Bdelloura or Syncoelidium 49 



Trematoda 52 



Haematoloechus (Distomum) 52 



Cestoda 54 



Crossobothrium laciniatum 54 



xi 



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