xx LIST OF ILLUSTRATIONS 



FIG. PAGE 



34. Platoum stercoreum .51 



35. Various forms of Foraminifera 52 



36. Shells of Foraminifera . 53 



37. Hastigerina murrayi .... .... 54 



38. Dimorphism and alternation of generations in Polystomella . . 55 



39. Actinophrys sol ... 57 



40. Actinosphserium eichhornii 57 



41. Various forms of Heliozoa 58 



42. Actinophrys sol, conjugation 59 



43. Lithocireus annularis 60 



44. Thalassoplancta brevispicula 61 



45. Aulactinium actinastrum ......... 62 



46. Actinomma asteracanthion ... 62 



47. Collozoum inerme . . ...... 63 



48. Chlamydomyxa labyrinth uloides .... ... 64 



49. Labyrinthula 65 



50. Didymium difforme 66 



51. Euglena viridis . 68 



52. Various forms of Flagellata 71 



ij 



53. Trypanosome . . . .72 



54. H^ematococcus pluvialis 73 



55. Pandorina morum 74 



56. Volvox globator .... 75 



57. Heteromita rostra ta . . 76 



58. Various forms of Choanoflagellata 77 



59. Various forms of Dinoflagellata .79 



60. Noctiluca miliaris 79 



61. Monocystis . . . 80 



62. Gregariiia . 82 



63. ,, development 83 



64. Eimeria and Coccidium ... 84 



65. Coccidium, life-history .... ... .85 



66. Malaria parasite 86 



67. Myxidium and Myxobolus 87 



68. Sarcocystis miescheri . 88 



69. Paramoecium caudatum 89 



70. ,, ,, conjugation . .... 90 



71. Various forms of Ciliata 94 



72. .95 



73. Vorticella ...... 96 



74. Zoothamnium arbuscula ....... .97 



75. Opanna ranarum . .... . . 98 



76. Various forms of Tentaculifera . 100 



77. Diagram showing the mutual relationships of the Protozoa . 103 



78. Sycon gelatinosum . . 106 



79. ,, ,, magnified ... .... 106 



80. ,, ,, transverse section .... . 107 



81. ,, ,, vertical section 108 



