LIST OF ILLUSTRATIONS xxi 



FIG. PAGE 



65. Sea-Horses, Hippocampus. After Anthony . . 422 



66. Lumpsucker, Cyclopterus ..... 424 



67. Emperor Penguin and Young. After Wilson . . 428 



68. Life -history of a Hydrozoon. After Allman . Plate 444 



69. Free -swimming Larva of a Sea-Cucumber . . 446 



70. Free-swimming Larva of a Sea-Cucumber . . 446 



71. Life-history of an acorn-shell, Balanus . . . 449 



72. Life-history of a Jellyfish, Aurelia. After Bronn . 450 



73. Larva and Pupa of a Gnat. After Hurst . . 453 



74. Life-history of Death's Head Moth . . . Plate 454 



75. Metamorphosis of the Eel. After Schmid. . Plate 456 



76. Male Edible Frog 462 



77. Marine Lampreys making a Nest in a River . Plate 466 



78. Diagram of a Phosphorescent Cell. After Watase. . 488 



79. Remarkable Deep Water Fish, Lamprotoxus. After 



Holt and Byrne 493 



80. Flounder with pigmen ted under-side. After Cunningham 513 



81. Leaf -insects. Phyllium. . . . Plate 518 



82. Head of Male Kurtus, carrying eggs. After Weber . 522 



83. Mermaid's Purse of Dogfish 527 



84. Head of Cassowary. After Rothschild and Keulemans 



Plate 536 



85. Two Spiders with Protective Resemblance. After 



Vinson and Pickard- Cambridge 540 



86. Umbronia, Insect like a Prickle . . . .541 



87. Chromatophore from a Prawn. After Degner . . 544 



88. Bright Colours of Littoral Animals . . . Plate 550 



89. Hydra with eight heads. After Roesel von Rosenhof . 552 



90. Regeneration of pieces of Stentor. After Gruber . 554 



91. Comet Form of Starfish. After Richters . . .560 



92. Wing and Wing-Bones of Penguin. ^1/ferPycraft . 587 



93. Vestigial hip-girdle and hind-limb of Whale. After 



Strutters 608 



94. Pineal Eye of Slow- Worm. After Hanitsch . . 609 



95. Pineal Eye of Embryo Sphenodon. After Dendy . 610 



96. King Crab, Limulus 619 



97. Peripatus. After Balfour 620 



98. New Zealand Lizard, Sphenodon . . . .621 



99. Nest of Hornet. After Janet . . . Plate 628 

 100. Liesegang's Rings. After Liesegang . . . 643 



