xx LIST OF ILLUSTRATIONS 



PIG. PAGE 



19. Loligo, Adult Specimen, and Development of Eye. (From 



a drawing by the Author, after Lankester) . • .110 



80. Amphioxus, Adult Specimen and early Developmental 

 Stages. (From a drawing by the Author, after Hat- 

 schek) 113 



31. Monad, Pandorina, Salinella and Volvox. (From a 



drawing by the Author, after Frenzel and others) . . 114 



I (Photographed from Nature, and lent by 



23. Phyllium r ° * „ ^ 



„, I W. E. Hoyle, Esq.) . . 128, 129 



24. The Stick Insect; 



25. Methona and Leptalis. (Photographed from Nature) . 138 



26. Bird of Paradise. (Photographed from Nature, and lent by 



W. E. Hoyle, Esq 142 



27. Orchis Mascula. (From a drawing by the Author, after 



Darwin and Oliver) 146 



28. Pteropus. (From a drawing made for the Author by R. E. 



Holding) 165 



29. Diagram to show the evolution of the lung from, the 



swim-bladder of fish. (From a drawing by the Author) . 167 



30. Ichthyosaurus) 



31. Plesiosaurus }("/^ Thomas Hawkjns) . • . 178,179 



32. Ornithorhynchus ] (From drawings made for the Author by 



33. Echidna J R. E. Holding) . . . 183, 184 



34. Embryo Chick. (From a drawing by the Author from Nature) 186 



35. Clavelina. (From a drawing made by Walter Garstang, 



Esq.) 100 



36. Primula. (From a drawing by the Editor) .... 218 



