ORDER ORTHOPTERA. 



6i 



The common English Grasshopper {^Rhauunatoceriis btguttulus)^ 

 whose song must be famiHar to every one who has walked through 

 the fields during the summer time, is produced by the friction of 

 the hinder thighs against the wing-cases. 



The locusts have been celebrated from the dawn of history on 

 account of the terrible ravages which they have committed in 



Fig. 74. — Decticas Vermcivcrus. 



various parts of the world ; and although many different species 

 have made their appearance in our own country at various times, 

 the climate, fortunately, seems unsuitable for them to live in, and 

 they have, therefore, not been known to breed here 



The Migratory Locust [^dipoda ?ntgratoria) is perhaps the best 



F^'g- 75- — Locusta Peregrina. 



known in this country on account of its visits, many stray in- 

 dividuals of which have visited us at different periods. 



Locusts are known all the world over, in fact, nearly every 

 country has a species peculiar to itself. The most extraordinary 

 accounts are on record of the vastness of the swarms which every 

 now and again invade particular districts. They are said sometimes 

 to absolutely darken the sun. 



