Fruit Tree Beetle in Ornamental Trees. 353 



appearance, and the crop was more or less injured. Parsnips 

 infested by this fly are far more difi&cult to treat than celery 

 plants, especially if the crop is strong, but some good was 

 caused by spraying and sprinkling with lime and soot by 

 means of knapsack distributors. 



It was noticed that a beautiful brilliant green ichneu- 

 mon fly, evidently parasitic upon the Tephritis onopordiniSy 

 came from infested celery and parsnip leaves. Infested 

 leaves were put in a glass-covered box, and many of these 

 ichneumon flies were found later on, having come from the 

 celery-fly pupae, either upon the leaves or on the bottom of 

 the box. At least twenty per cent, of the pupae were thus 

 parasitised and prevented from producing flies. This parasite 

 is but little more than the twelfth of an inch long, with a wing 

 expanse of barely one-fourth of an inch. It is of an emerald- 

 green colour, with a very narrow body, having six yellowish 

 legs and darker feet. It resembles the insect described by 

 Curtis in his " Farm Insects as Pachylarthrus smaragdinus. 

 There is no doubt that it was doing excellent service in 

 October, and until the first week of November, in celery and 

 parsnip beds attacked by the celery and parsnip fly. 



Fruit Tree Beetle in Ornamental Trees. 



Among the complaints of injury received from insects 

 during the last three months was one of the destruction of a 

 fine specimen of the ornamental flowering" Weeping Apple " 

 {Elise Rathke) by some " grub.'' Upon examination, the 

 branches and the slender stem were found to be full of the 

 larvae of the Fruit Tree Beetle {Scolyhis rugidosus), the bark 

 was peeling off, and the tree nearly dead. This tree had 

 been obtained from a nurseryman in November, 1897 ; it put 

 forth some flowers in the spring following, and appeared 

 healthy until the summer, when it failed, and by the end of 

 the autumn was past recovery. In November the owner of 

 the garden was advised to take it up and burn it, in order to 

 destroy the larvae of this most dangerous insect, which 



