180 



INSECTS mJUKIOUS TO THE PEAR. 



Fig. 51) with her numerous unhatched progeny, consisting of from 

 twenty to fifty eggs — the breaking of which latter furnished the red 

 fluid before noticed. After the eggs have been deposited, the body of 



Fig. 56. 



Fig. 56 represents a Pear branch attacked by the Bark-Louse. The insect being 

 concealed nnder the white scales. 



Fig. 57 represents the under side of one of the scales, with the eggs adhering, 

 greatly magnified. 



the female contracts, as shown in Fig. 57. Previous to the first of Octo- 

 ber, I have found the insect under the scale without the eggs, but by 

 arranging the light so as to produce a slightly transparent effect, the 

 eggs may then be seen within the body of the parent, as at Fig. 58, 



