86 



cocoons into a place of resort and concealment. The second brood 

 is hatched in June, the third in August, and it is from the matured 

 females of this third brood, that the young, who remain over winter, 

 issue. The habit of emigrating to the trunk of the trees is notice- 

 able in the young of each generation, although for a short period, 

 except the brood who pass the winter months there. A short time 

 before the males enter the pupae, both sexes wander up and down 

 the trunk and larger branches of the tree for a few days, when the 

 males make their cocoon, and the females repair to the leaves where 

 they become stationary. 



REMEDIES. 

 The natural enemies are efficient in limiting the destruction 

 by the Fseudococcus aceris, but when they require artificial assis- 

 tance I find the following wash effectual. To every three gallons 

 of water add one eighth of a pound of white hellebore and a small 

 teaspoonful of crude carbolic acid. The wash should only be ap- 

 plied when the youag insects are on the trunk and larger branches 

 of the tree. By the aid of a white-wash brush, the wash should 

 be rubbed thoroughly in to all the crevices and freely applied. First 

 commencing as high in the tree as neccessary to reach the larger 

 limbs and working downward the wash will find its way to the 

 trunk. The wash may be applied with advantage during the warm 

 days in winter and early spring, as also in the summer when the 

 young are wandering about. 



EXPLANATION OF PLATE VI. 



Fseudococcus aceris Geoffroy. 

 Fig. I. Shape of egg when first deposited. 

 Fig. 11. Egg in later development. 

 Fig. III. Young female Fseudococcus aceris G. 

 Fig. IV. Antenna of young female. 

 Fig. V. Mouth parts of young female. 



Fig. VI. Leg of young female, cx-coxa, tr-tiocli:inter, fr-feniuv, ti-tibi:i. t3-tarsus_ 

 Fig. VII. Posterior part of young female. 

 Fig. VIII. Young male. 

 Eig. IX. Antenna of young male ' 



Fig. X. Antenna of female after first change or moult. 

 Fig. XI. Pupa of male. 

 Fig. XII. Male of Pseudococcos aceris. 

 Fig. XIII. Antenna of male. 

 Fig. XIV. Halter of male. 



Fig. XV. Leg of male, 1-eoxa, 2-tr9chantei', ^femur, 4-tibia. 5-tar»u9, 

 Fig. XVI. Grown female. 

 Fig. XV^J, ^ntei^na of female. 

 Fig- XVII [, "Leg of female. 



