PROCEEDINGS, 1916. 37 



INJURIES. 



The damage to the twigs and smaller limbs is done by the female in depositing her 

 eggs. The double slits made by her ovipositor do not heal over, but increase in size 

 with the growth of the tree, and assume an oval shape. The insects are often very num- 

 erous so that the young growth in infested orchards is frequently badly roughened by 

 the unsightly scars caused by this insect. Repeated severe attacks of the pest occur- 

 ring year after year severely check the infested trees, and the injury to the bark affords 

 suitable conditions for the entrance of boring insects and wood destroying fungi. 



DESCRIPTION OF INSECT. 



This insect resembles the former species so closely that they can only be distinguish- 

 ed by an expert. The nymph, however, is easily distinguished from that of its relative 

 by its color, which is brownish grey. 



LIFE HISTORY STUDIES. 



The life history of this insect was worked out in the same manner as that of Ceres* 

 taurina, on sheep sorrel plants in flower pots. 



The accompanying table summarizes the results : 



