XIV LIST OF FIGURES 



35- Types of marine rhizopod shells .......... 71 



36. Polythalamous shell types schematized ......... 72 



37. A complex polythalamous shell .......... 73 



38. Megalospheric and microspheric shells 74 



39. Clathrulina elegans ............. 75 



40. Types of spicules in Heliozoa .......... 76 



41. Skeleton formation ............ 77 



42. Lichnaspis giltochii 78 



43. Plagiocarpa procortina ............ 79 



44. Types of pseudopodia ............ 80 



45. Camptonema nutans ............ 8l 



46. Ciliophrys, pseudopodia and axial filaments . . . . . . . .82 



47. Amoeba proteus pseudopodium, diagram 85 



48. Amoeba verrucosa, ectoplasm and vacuoles ........ 85 



49. Contractile vacuole of Amoeba proteus ......... 89 



50. Gromia oviformis ............. 91 



51. Microgromia socialis in division . . . . . . . . . .92 



52. Paramceba eilhardi ............ 94 



53. Spore-formation in Heliozoa ........... 96 



54. Conjugation of Actinophrys sol 98 



55. Dimorpha nutans ............. IOO 



56. Nuclear ia deli ca tula . . . . . . . . . . . .102 



57. Protozoa with pseudopodia and flagella 103 



58. Membrane in Actinospharium eichhornii . . . . . . . . 104 



CHAPTER IV 



59. Proterospongia haeckeli 113 



60. Codonceca costata . . . . . . . . . . . . .114 



61. Dinobryon sertularia . ' . . . . . . . . . . .115 



62. Phacotus lenticularis 1 1 6 



63. Distephanus speculum . . . . . . . . . . . .117 



64. Gymnodinium ovum and Peridinium divergent . . . . ' . .118 



65. Synura uvella . . . . . . . .. . . . .119 



66. Primitive forms of Dinoflagellidia . . . . . . . . . 121 



67. Phalansterium digitatum 122 



68. Types of collars in Choanoflagellida . . . . . . . . .123 



69. A Choanoflagellate type 1 23 



70. Nuclear division in Noctiluca miliaris . . . 124 



71. Megastoma enter icum . . . . . ... .126 



72. Gonium pectorale . . . . . . .128 



73. Gonium pectorale in division 1 29 



74. Budding in Noctiluca miliaris I3 2 



75. Cercomonas crassicauda, division and spore-formation 133 



76. Pandorina morum, conjugation . . . . . . . 134 



CHAPTER V 



77. Life history of a gregarine; schematic . . . ... . . I4 1 



78. Pfeifferia tritonis in Triton cells 14 2 



79. Leptotheca agilis, a Myxospore .......... 143 



