Galls affecting Growth 71 



year's shoot grown to its full length of two or three 

 inches. This gall insect was first described by 

 Mr. Inchbald in 1861. The pupa stage is reached 

 in April or May. In June the orange-coloured fly 



YEW AFFECTED BY GALLS. 



appears. The length of its body is five millimetres 

 in length, and the expanse of its wings nine milli- 

 metres. 1 It was formerly supposed that the pro- 



1 Entom. Weekly Intelligencer, 1861, vol. v. pp. 76, 77. 



