x LIST OF ILLUSTRATIONS. 



FIG. FAGE 



33. Cribella oculata, . . . . . . . . 100 



34. Morphology of OpMuroidea, . . . . . . 102 



35. Comatula rosaeea, . . . . . . . 103 



36. Khizocrinus Lofotensis, ...... 104 



37. Cystidean, ......... 105 



38. Holothurian, ........ 106 



39. Morphology of Tceniada, . . . . . . 109 



40. Morphology of Trematoda, . . . . . 112 



41. Morphology of Turbellaria, . . . . .113 



42. Free Nematodes, . . . . . . , 115 



43. Morphology of Botifera, . . . . . . .116 



44. Diagram of an Annulose Animal, . . . . . 118 



45. Syrinx nudus, . . . . . . . .119 



46. Section of an Annelide, . . . . . . 120 



47. Morphology of Hirudinea, . . - ; . . .122 



48. Morphology of Tubicola, . . . . ... 123 



49. Morphology of Errant Annelides, , . , V . 124 



50. Lobster, . .. . . . , . 130 



51. Spiny Spider-crab, . " . .. . i - ; * ' .132 



52. Morphology of Isopoda, . . ^ , . . 133 



53. King-crab, . . . . . . . ..- . 134 



54. Pterygotus Anglicw, . . . * , '. 134 



55. Morphology of Trilobites, . . . . , .135 



56. Fresh-water Entomostraca, . . . , .. f 136 



57. Morphology of Cirripedia^ .. . . , .. . .137 

 57i. Morphology of Podosomata and Acarina, . . . . 141 



58. Scorpion, . .- . . - . .- . .142 



59. Theridion riparium, . . . . . ; . 143 



60. Scolopendra, . . . . . ... .145 



61. Millipede, . 145 



62. External Anatomy of Insect, . . . - . . . . 147 



63. Digestive Apparatus of Beetle, . . . . 148 



64. Metamorphosis of Magpie-moth, . . .. . . 151 



65. ApUsfdba:, 154 



66. Cockroach, . . . . .... . 155 



67. Migratory Locust, . . . . ... 156 



68. Aphis-lion, . . . ... : -. . 157 



69. Termes bellicosus, '.-..- .. .... 157 



70. Tipula oleracea, . ,. . . . ' -, < - ,- . 158 



71. Larva, Pupa, and Imago of Cabbage-butterfly, . . . 159 



72. Gooseberry Saw-fly, . , . . . 161 



73. Myrmica rufa, , . . .* . . . 162 



74. Cockchafer, . .- . . . . . .163 



75. Diagram of a Mollusk, .. . . . . - . . 164 



76. Morphology of Polyzoa, . . .. . . . . 169 



77. Flustra, ValTceria, and LopTiopus, ..... 170 



78. Morphology of Tunicata^ ...... 172 



