12 THE CANADIAN ENTOMOLOGIST. 



several operations required to produce the large cakes of copper and 

 nickel known as matte. The molten slag poured out on the dump-heaps 

 lit up the country for miles around and produced a very weird effect all 

 night. Mr. Fletcher had to leave for Ottawa by the night train, but I 

 remained two days longer and went over the same routes and somewhat 

 extended the area of investigation, but did not materially enlarge our list 

 of captures. A species of Diodontus (which I have not yet been able to 

 place with any of the described forms) was somewhat common, generally 

 at rest on leaves of maples, but not many specimens were collected as the 

 foliage was too damp for sweeping and the insects were too nimble to be 

 easily taken with the fingers alone. Oryssus Sayl was taken upon a 

 burnt pine tree, so that possibly it may infest this tree as well as the 

 maple and poplar. 



The last day of my stay was so wet that no collecting could be done. 

 Mr. Evans did indeed go with me in the morning to the beaver-meadow, 

 where we waded about through the wet grass, but the rain became so 

 heavy that all the insects disappeared, except mosquitoes, which were ex- 

 ceptionally numerous and aggressive. My time was, however, not unpro- 

 fitably or unpleasantly spent, as fuller opportunity was afforded for 

 further examination of the extensive collection of beautifully prepared 

 specimens which has been gathered by Mr. Evans, and in which are 

 many rare and interesting species. Each evening numerous moths were 

 taken upon the study window screen, to which they were attracted by a 

 light arranged so as to serve for that purpose as well as for the preparation 

 of accumulated material. 



To give some idea of the insects which may be taken in two or three 

 days at the season in question (middle of June), I append a list of the 

 species we collected, with the hope that at no late date our esteemed 

 friend and co-worker, Mr. Evans, will publish his promised catalogue of 

 the large and valuable collection he has made in tliis little-known region. 

 No attempt was made to collect Lepidoptera other than butterflies, or 

 Diptera (except a few of the larger species), while Orthoptera and Neurop- 

 tera were too few in number to be worth recording : — 



Lepidoptera. 



Papilio Tunms, Linn, Common. 



Pieris JVapi, Esp., wintei form Olcracea-Jiycinalis, Harris. Several. 



Colias Philodice, Gdt. 



Argynnis Myrina, Cram. Common in beaver-meadow. 



