XIV LIST OF FIGURES 



FIG. PAGE 



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 . . ' . . . . . . . ■ .81 



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



47. Amceba proteus pseudopodium, diagram ........ 85 



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



49. Contractile vacuole of Amceba proteus ......... 89 



50. Gromia oviformis .......'...... 9 1 



51. Microgromia socialis in division .......... 9 2 



52. Paramaba eilkardi ............ 94 



53. Spore-formation in Heliozoa ........... 9^ 



54. Conjugation of Actinophrys sol .......... 98 



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



56. Nuclearia delicatula ............ 102 



57. Protozoa with pseudopodia and flagella ........ 103 



58. Membrane in Actinosphsrium eichhornii ........ 104 



CHAPTER IV 



59. Proterospongia haeckeli . . . . . . . . . . . .113. 



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



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



62. Phacotus lenticidaris . . . . . . . . . . . .116 



63. Distephanus specidum . . . . . . . . . . . 1 1 7 



64. Gymnodinium ovum and Peridiniunt divergens . . . . . . .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 123 



70. Nuclear division in Noctiluca miliaris ......... 124- 



71. Megastoma entericum ............ 126 



72. Gonium pectorale .......... . . . 12S 



73. Gonium pectorale in division . . . . . . . . . .129 



74. Budding in Noctiluca miliaris .......... 132 



75. Cercomonas crassicauda, division and spore-formation ...... 133 



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



CHAPTER V 



77. Life history of a gregarine; schematic ......... 141 



78. Pfeifferia tritonis in Triton cells .......... 142 



79. Leptotheca agilis, a Myxospore 143. 



