xx LIST OF ILLUSTRATIONS 



FIG. PAGE 



37. Shells of Foraminifera 54 



38. Hastigerina murrayi 55 



39. Dimorphism and alternation of generations in Polystomella . . 57 



40. Actinophrys sol 58 



41. Actinosphaerium eichhornii 58 



42. Various forms of Heliozoa 60 



43. Actinophrys sol, conjugation 61 



44. Lithocircus annularis 62 



45. Thalassoplancta brevispicula 63 



46. Aulactinium actinastrum 64 



47. Actinomma asteracanthion .64 



48. Collozoum inernie ........... 65 



49. Chlamydomyxa labyrinthuloides 66 



50. Labyrinthula 67 



61. Didymium difforme 68 



62. Euglena viridis 70 



63. Various forms of Flagellata 73 



64. Trypanosome 74 



65. Hsematococcus pluvialis 75 



66. Pandorina morum 76 



67. Copromonas subtilis 77 



58. Volyox globator 78 



59. Various forms of Choanoflagellata 79 



60. Various forms of Din oflagellata 81 



61. Noctiluca miliaris 81 



62. Monocystis 82 



63. Gregarina 84 



64. development 85 



65. Eimeria and Coccidium 86 



66. Coccidium, life-history 87 



67. Malaria parasites 88 



68. Myxidium and Myxobolus 89 



69. Sarcocystis miescheri .......... 90 



70. Paramcecium caudatum . 91 



71. conjugation 92 



72. Various forms of Ciliata 96 



73. 97 



74. Vorticella 98 



75. Zoothamnium arbuscula 99 



76. Opalina ranarum 100 



77. Various forms of Tentaculifera ........ 102 



78. Diagram showing the mutual relationships of the Protozoa . .105 



79. Sycon gelatinosum 107 



80. ,, magnified 107 



81. ,, ,, transverse section 108 



82. ,, ,, vertical section 109 



83. Sycon gelatinosum, pore-membrane 110 



84. apopyle 110 



