AGRICULTURAL EXPERIMENT STATION. 113 



strengthened in this resolution after finding that the description 

 given by Loew was drawn np from a single female. We did not then 

 know of Prof. Gillett's observations, which are accurate in the main 

 but general, and we trust the more detailed study we have made will 

 be helpful. We were interested in comparing the life history of this 

 insect with Trypeta pomonella, Walsh, which we studied in 1888-9. The 

 experience gained in the study of that insect has aided us very much 

 in the study of this. We studied the larvae and pupae in the summer 

 of 1894, and in the spring of 1895 considered the flies, their eggs, and 

 the method of ovipositing, completing the life history. The following 

 results of our study are humbly given hoping they may contribute 

 to a better knowledge of this injurious insect. 



The following data which probably refers to EpocJira Canadensis 

 lacks sufficient confirmation. 



Mr. L. O. Howard informs us that in the notes of the Division of 

 Entomology at Washington are the following facts: "June 15, 1885, 

 package of currants and gooseberries infested with larvae evidently 

 of T. Canadensis was received from G. h. Colfax, Washington (State.) 

 The adults were not reared. "July 11, 1892, package of gooseber- 

 ries infested by what is evidently the same insect was received from 

 D. Thurston, West Ferndale, Washington (State.) The larvae were 

 dead when received. 



To gain farther information we addressed a letter to Mr. Thurston 

 and received the following reply. 



West Ferndale, Whatcom Co., Wash., July 7, 1895. 



Prof. Francis L. Harvey, Orono, Maine. 



Dear Sir — Yours of July 1st to hand. During the years 1890, '91, 

 '92, I noticed my currants (black, white and red,) also gooseberries 

 badly troubled with the worm you refer to. In '93 I was at the 

 World's Fair and could make no observations. In '94 I did not notice 

 any, (my attention not being specially directed to the subject.) 

 This season, '95, at your request I have just looked over my small fruit 

 and failed to find a single specimen! although in the years referred 

 to they were so abundant as in '92 to spoil one-third of the goose- 

 berries and black currants. The only reason I can give for the 

 change, is that for the past few years, I have allowed the young 

 chickens to run at large in the berry patch, and during fall, winter 

 and early spring I allowed the large fowl to run at large also, and 

 they may have exterminated the larvae after they had reached the 

 ground. When I pick the crop if I find any wormy specimens I will 



forward them. 



I remain yours truly, 



A. W. THORNTON. 



