EXPLANATION OF PLATE D. 



Fig. 1. CHIONASPIS SALICIS. (Pages 37 and 38.) 



At A are shown the female puparia on ash branch, as 

 they appear in early autumn. In winter they har- 

 monise exactly with the colour of the bark, and are 

 much less conspicuous. The lower branch (u) is almost 

 covered with the empty puparia of the males ; beneath 

 them the females are as numerous as on the branch 

 above them. This species is freely eaten by birds. 



Fig. 2. ASTEHODIASPIS QUERCICOLA. (Pages 34 39.) 



Given as an illustration of one of the British Coccids 

 which is freely eaten by birds. On the first branch (to 

 the left) four of the insects are seen inhabiting the 

 gall-pits or swellings produced by the insects. On the 

 fourth branch are three gall-pits which have been 

 robbed of the insects by titmice. Other empty gall-pits 

 are also seen on the other branches. 



