Number 75 Septembkr 30, 19 19 



OCCASIONAL PAPERS OF THE MUSEUM OF 

 ZOOLOGY 



UNIVERSITY OF MICHIGAN 



Ann Arbor, Michigan Published by the University 



THE WATERBUGS (HEMIPTERA) OF THE 

 DOUGLAS LAKE REGION, MICHIGAN^ 



By Roland F. Hussey 



Douglas Lake is located about seventeen miles south of 

 Mackinaw City, in the northern tip of the southern peninsula 

 of Michigan, ^bout midway between Lake Huron and Lake 

 Michigan, at an elevation of 712 feet above sea-level. It is 

 fed by two small streams which flow into the north side of the 

 lake, at the east and the west ends respectively, and it drains 

 into Burt Lake, two miles to the south, through Maple River, 

 a small winding stream which has its source in the west end 

 of Douglas Lake. Within a radius of eight miles there are six 

 other lakes of various sizes. 



Douglas Lake is about three and three-quarter miles long, 

 and its maximum depth is about 85 feet. The sandy beach 

 extends out into the water for a short distance, and is termin- 

 ated by an abrupt drop-off beyond which there is no emergent 

 vegetation. Along the east shore the beach reaches its max- 



1 Contribution from the Biological Station of the University of Michigan. 



