CONTENTS. 



PAGE 



general, of the Ground Species, of the Plant Types— Special protec- 

 tive resemblance — Alluring colouring — Aggressive mimicry— Geo- 

 graphical distribution ... ... ... .•• •■• i6 



CHAPTER 111. 



W.JlLKIN'G-STICKS AXI> walking-leaves (PHASMID.t:). 



General peculiarities — Appearance grotesque — Mesothorax often rela- 

 tively very large — Yet tegmina usually of small size, or absent, 

 even where lower wings are very largely developed — In such cases 

 provision for defence of latter organs essential — Characteristics and 

 habits — Are herbivorous — Their immobility — Reasons and use 

 thereof — More means of defence ; prickles and spines, power of 

 ejecting nauseous fluid, aquatic habits — Curious power of repro- 

 ducing lost or injured limbs — Eggs in Phasmidae generally of a 

 most remarkable nature — Specially exemplified in eggs of Phyllium 

 — Change during scramble out of egg ; and after — Change in 

 colour at different periods of life ... ... ... ... 41 



CHAPTER IV. 



WALKING-STICKS AND WALKING-LEAVES (PHASMID^) — COIltimied. 



Marvellous imitative resemblance of vegetative objects — Walking-sticks 

 proper — Beautiful and giant winged forms — Bizarre shapes galore 

 — End gained by this mimicry of course protection against attack 

 — There is perhaps no other group of insects which in form and 

 colour are so generally imitative — Leaf-insects — Resemblance to 

 leaves displayed by tegmina, also by other parts — Female alone 

 possessed of large leaf-like tegmina — Tegmen of female Phyllium 

 from various points of view an exceptional structure — Success of 

 artifice demonstrated — Distribution of family — That Walking-sticks 

 come of a remote antiquity — That they are a singularly isolated 

 group .. ... ... ... ... ... ... 60 



