PROCEEDINGS 



OF THE 



ACADEMY OF NATURAL SCIENCES 



OF 



PHILADELPHIA. 



1921 



TWO WEEKS COLLECTING IN GLACIER NATIONAL PARK. 



BY ANNETTE F. BRAUN. 



During the summer of 1920, the writer had a brief, but very- 

 successful collecting trip in Glacier National Park, Montana, which 

 disclosed an unexpectedly rich insect fauna. A total of fourteen 

 days, in whole or part, was spent in collecting between July 14 and 

 July 29, inclusive. 



Glacier National Park lies in northwestern Montana, including 

 within its boundaries a mass of mountain peaks, the highest of which 

 rises to an elevation of 10,438 feet. It is traversed in a northwest- 

 southeastwardly direction by the Continental Divide. On the west 

 side, the waters flow into the Pacific through the Columbia River; 

 on the east side, in the south, to the Missouri River, in the north 

 beyond the Hudson Bay Divide, to Hudson Bay. Adjoining the 

 park on the east lie the foothills and plains; at the lower altitudes 

 on this side of the park, about 5000 feet, there is a blending of foot- 

 hills and mountain vegetation which may in part account for the 

 richness and diversity of the fauna in the dry mountain meadows 

 at this altitude. It was on the east side of the park that most of 

 my collecting was done. 



Although my attention was directed principally toward securing 

 as adequate a representation of Microlepidoptera as possible within 

 the limited time spent in the park, specimens in other groups of 



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