I'koceedixgs, \<J->?y ]', I 



numerous, Wduld he ;i serious ti-nulile to the small finiit liTower and 

 would present a difiicult prolilem to the economic entoniolo^'ist in their 

 control. That this is moi-c than a' niei'e possiliility is to be apprehended 

 from the fact that they were only listed as suspects by Mr. Treherne in 

 1914, whereas tliey are now i;enci'ally distributed and frequent. Their 

 continued increase would eive rise to the situation just nu'iitioned. 



Rose Scale (Aulacaspis rosae, Bouehe). — This was met with occasion- 

 ally on all cane fruits and roses, but chiefly on blackberries. It may be 

 controlled by a lye wash iii winter and by euttinp' out the badly affected 

 canes. Only where ueiilectcd is any damage done. 



Eliii-Ci(rnntt Aphis ( Schizoneura ulmi L.) — Tliis interesting species 

 was collected a1 Cliilliwack in the fall of lit2() by Mr. \V. II. Robertson, 

 Provincial Horticulfui-ist. It is ;i double host aphid of European oi-ig-in, 

 alternating between the Eniziish elm (Ulmus campestris) and eui-rants 

 or goo.seberries, but this is the first record of its occurrence on the cur- 

 rant in America. 



Dr. Edith Patch, in ;\laiue. and Mr. W. A. Pioss, in Ontario, have 

 found it rarely on elm. 



In PjUS'land it lias been noti'd doiuu- danuiue to youni;- currant hushes 

 in the luirsery row, where it forms colonies on the roots after the style 

 of the woolly a])his of the ai^ple in its subterranean forms. 



Beside the Cliilliwack outbreak, hushes located at Ajiassiz were found 

 to be infested, aiul I uuide this year some prelimiiuiry observations on 

 its life history. 



My first note is the fiiuliiit;- of the stem mother with a numerous pro- 

 geny in a typical h>af curl on English elms on the E.xperimental Farm 

 at Agassiz. American elms are not touched by this species; the leaf curls 

 on this latter tree being caused by "lanigera" or "americana." The lice 

 in these leaf curls produced winged migrants and were emjity by Jiuie 

 20th, when on July the .")tli, I fouTid the commencement of the summer 

 cycle on the black currant roots on the farm. These were situated at 

 varying distances of from 50 to 200 yards from the elms. These a])1erous 

 generations continued to increase and spread over the whole root system 

 of the currants until September, when the winged form again aj)peared 

 and returned to the elm for egg laying. This is an insect that will have 

 to be watched, especially in its effect on nursery stock. In its present 

 abundance it probabl.y does but little damage to established plantations, 

 but, should it increase, the problem of its control would ln' as difficult as 

 that of the somewhat similar grape phylloxera, with lln' ailded difficulty 

 that the returns from its small-fruit hosts do nol admit of an expensive 

 method of control being applied. 



Experiments with sdil insecticides carried on at Agassiz lliis year 

 were not successful. Xicotiiie sul|)hate was the most jiromising, but 

 failed to laenetrate to the i.le])ths at which the lice were found. 



