74 



pletely destroyed by it, so much so that 

 not a single tree was left alive. Some 

 meadows at Twickenham were so dread- 

 fully infested with them, that I have 

 seen the grass destroyed completely on 

 considerably large spaces, so that I advised 

 the owner two years ago to rake it up to 

 gether and burn it, which was done ; this 

 autumn the meadows are also infested 

 with it in the same manner. — Fig. 13. 

 represents a perfect insect of this Idnd. 



The female digs into the ground the 

 depth of a span, and lays her eggs, which 

 are oval and of a pale yellow colour. 

 After this it creeps out again and lives 

 some time longer upon the leaves of trees, 

 and in time proceeds to lay another parcel. 



Roesel put some females pregnant 

 into glasses half filled with earth, with 

 a tuft of grass over each, covered with 

 a thin cloth. After a fortnight he found 

 in one of the glasses some hundreds 

 of eggs (No. 12.) he left another glass 

 unexamined for fear of hurting the eggs, 

 and put it in a cellar. Towards autumn 

 he looked at the glass and then perceived 



