July, 1914.] THE APPLE MAGGOT. 15 



received from various parts of the country were not found in- 

 fested; and by lUingworth in 1912 (34) who stated that "although 

 careful observations have been made for two seasons at this 

 station, no flies were discovered on haws here. " 



Ross in a preliminary report on investigations in Ontario (55) 

 states that he examined many hawthorns in Durham and Hast- 

 ings counties but "discovered no trace of the insect on them." 

 Infested haws were received, however, from Ste. Anne's, Quebec^ 

 and from these larvae and pupse were secured. 



In December, 1911, the writer learned through Mr. Lawson 

 Csesar, provincial entomologist of Ontario, that adults of the 

 apple maggot had been reared from haws by Professor Swaine, 

 then of Macdonald College. The trees grew in the vicinity of 

 the college, and thus the specimens probably came from the same 

 locality as the infested haws noted by Mr. Ross. 



Further interesting facts were made available to the writer 

 through the kindness of Mr. William H. Brittain, now provincial 

 entomologist of Nova Scotia, and Professor T. G. Bunting of 

 Macdonald College. 



Mr. Brittain was formerly connected with the college and while 

 there reared large numbers of the adults from a hawthorn hedge 

 forming part of the eastern boundary of the college grounds. 

 Apple trees of several varieties make up an orchard standing near 

 this hedge. Some of the apples are distant but a few feet from 

 the haws. In spite of this fact Mr. Brittain found no maggots 

 in the apples at any time in the five-year period comprising his 

 connection with the college and ending three years ago. 



In a recent letter Professor Bunting states that some maggots 

 were noted in 1913 in Tolmans and Yellow Transparents. None 

 were observed in any other varieties that fruited last year, in- 

 cluding Mcintosh, Wealthy, Duchess, Fameuse, Patton's Green- 

 ing, St. Lawrence, Montreal Peach, and several varieties of crab 

 apples, although two or three of these, notably Fameuse, are 

 varieties that ordinarily are attractive to the flies. 



Correspondence with state and provincial entomologists has 

 made available the following additional facts concerning the 

 infestation of haws by the apple maggot. 



In Nova Scotia Mr. Brittain, provincial entomologist, states 

 that the maggot has been found abundant in wild haws in the 



