1920 EXTOMOLOGICAL SOCIETY. G1 



was found here aiul there on the open ranges but it was nowhere very plentiful 

 and not more than fifty specimens were seen during the entire summer. The 

 specimens collected belonged to the form rufipes (Cockerell). 



Melanoplus hivittatus (Say). This grasshopper was not seen ver\- often this 

 year and did not seem to be nearly as common as usual. The first adult taken 

 was at Fairview on June 27th, but from this date until the middle of August 

 no adults were seen. During the last week in August and in the first week in 

 September a considerable nvmiber of females were taken while depositing eggs in 

 the earth betwen the planks of the side-walks at Penticton. At the end of Sep- 

 tember ragged adults could still be found at Yernon and some eggs were still being 

 deposited. 



Melanoplus cinereus (Scudder). Adults of this species were first collected at 

 Fairview on August 7th, and were found during August very occasionally in this 

 locality. They are very pale in colour and have bright blue hind tibiae when alive. 

 Only one male of this species was taken and ten females. They were all taken 

 among sage-brush and Oh njsofJia minis bushes. When disturbed they jumped for 

 great distances and using their wings would usually land in one of these bushes, 

 thus making it very difficult to capture them. Several w^re found by shaking 

 the Chrysothamnus bushes in which they seemed to spend a good deal of their 

 time. The}' were observed to feed on the leaves of the CIn't/sofhamims. Several 

 large nymphs of this species were seen oil iVugust 23rd. This is the first record 

 of this species from Canada. 



0>;rE YEAR'S EXPERBLEXTS IX THE CONTROL OF THE CABBAGE 



MAGGOT. 



W. IT. BlilTTAlN, PliOVIXCIAL ENTOMOLOGIST TOR XOVA SCOTIA. 



Experiments in the control of the cabbage maggot {Pliorhia hrassicae Bouche) 

 were initiated in a small way at Truro in 1917, as a joint project to be carried 

 on co-operatively by the Horticultural and Entomological Departments of the 

 Agricultural College. In 1918 these experiments were continued on a larger scale 

 and the 1919 experiments have grown out of the work of the previous two years, 

 of which they are simply the continuation. Since the records for 1919 reveal 

 nothing inconsistent with the resuks of the previous seasons, it has been considered 

 sufficient, for tlie purpose of this paper, to confine our attention entirely to the 

 former. None of the results herein outlined should be considered as final, but 

 we believe that they indicate promising lines for further research, and they form 

 the basis for another season's work. While the utmost care was taken to make 

 the records as accurate as possible and to eliminate possible sources of error, our 

 findings will all be checked up in subsequent seasons before definite recommenda- 

 tions based on our own experiments can be made. 



Control Investigations, 1919. 



The plots in which the different control experiments were conducted in 1919 

 were divided into throe main series. The first series designated " continuation 

 plots," included trials of those materials found to be of promise in previous years, 

 either in our own experiments or in those of other workers. The second series 

 which were called " field plots." included the three treatments which previous 

 results showed to bo most promising, these being applied to later cabbage on a 



