178 THE CANADIAN ENTOMOLOGIST. 



This is the question I wish to ask, and to answer it, it is necessary to 

 have observations of a more extensive nature on the relation of yellow 

 insects to pink flowers, and vice versa. I have myself noticed that (in 

 Kent, England.) Gonepteryx rhamni appears to be exceptionally fond of 

 settling on pink flowers, but it seemed to me rather that the butterfly was 

 conscious of the contrast between the colours and its own conspicuous- 

 ness arising therefrom. 



May I rely upon your readers to supplement these notes, and so clear 

 up this question ? 



CORRESPONDENCE. 



DlCERCA PROLONGATA. 



With reference to Dr. John Hamilton's note on p. 120, I may say that 

 I have found the larva of this species boring in Populus tremirio'ides in 

 Colorado, concerning which details were published in the " Entomologists' 

 Monthly Magazine" for March, 1888, vol. xxiv, p. 232-233. 



T. D. A. COCKERELL. 



CAPTURES IN 1887. 



Dear Sir: My additions to the list of Canadian Lepidoptera for the 

 past season is of the most meagre description. I took a good many 

 micros, new to me ; but as usual, with them a large proportion were single 

 specimens of a kind. I sent to Prof. Fernald 1 7 specimens which I had 

 in duplicate ; of these three turned out to be variations of kinds that he 

 had previously named for me ; three proved to be all one ; one, Depressaria 

 heracliana Dege. was new to me, but already in the list, and one Eccopsis 

 nitidana Clem, is new to the Canadian list ; the rest were unknown to 

 him. Three years ago I captured at Ridgeway, along with Limacodes, to 

 which I thought it belonged, a moth new to me, and which has been from 

 that time until lately awaiting a name. During the past winter, Mr. John- 

 ston, of this city, was making some exchanges with Miss Emily L. Morton, 

 of Newburgh, N. J., and received from her a specimen labelled Adoneta 

 spinuloides H. S., in which I recognized my unnamed Bombycid. Miss 

 Morton acknowledges her indebtedness to Mrs. Fernald for the correct 

 identification of most of her Lepidoptera. On the nth of July last I 

 came on an assemblage of Pyralids in the grass under the shade of a 

 butternut tree, where I had taken refuge from the excessive heat. At first 



