xiv CONTENTS. 



may migrate Length of a single flight Proof of power of pro- 

 longed flight that they are able to cross large bodies of water 

 Natural enemies, vertebrate and invertebrate Some species of 

 Acridiidae present an unusual aspect Oedipodides, striking cases 

 of colour difference Is correlative with locality Interesting Ere- 

 mobiens ; modified to extraordinary extent for desert life ... 106 



CHAPTER VII. 



GREEN GRASSHOPPERS (LOCUSTIDjE). 



Distinguishing characters Absence of air-vesicles connected with 

 tracheal system Ocelli generally imperfect Peculiar head-orna- 

 ment Locusta, ovipositor Life-histories Deposition of eggs in 

 galls, of Meconema varium, QiXiphidium ensiferum Development 

 of Microcentrum retinerve Tibial ears, their structure and 

 functions Musical organs and music Katydids, their pertinacity 

 As pets Ill-effects of confinement Food-habits Anabrus, 

 increase to large numbers Perfection of resemblance of tegmina 

 to leaves Defence of a positive nature Resemblance to Stick 

 Insects Cave-dwellers Remarkable forms Gigantic and ugly 

 Anostostoma Of the curious genus Deinacrida Schizodactylus 

 monstrosus Eumegalodonidas ... ... ... ... 141 



LEPIDOPTERA. 



CHAPTER VIII. 



SYMBOLS OF PSYCHE. 



Fable of Psyche Its origin In its later aspects Conspicuous beauty 

 and abundance of the Symbols Favourite resorts Not only 

 gregarious, but migratory Twilight fliers Of a quarrelsome dis- 

 position Peculiarities of highest interest Different females of 

 Papilio memnon Perfect protective imitative resemblance of 

 Kallima, the leaf-butterflies ... ... ... ... ... 163 



