bIPTERA OF MINNESOTA. 



73 



as he has it. The same is true of Figs. 148, 149, 150, 151. 



The following is a quotation from Dr. Lugger's Second Report. 

 We omit references to his figures, which are, as we have said, errone- 

 ously labeled : 



Fig. 61. 5". vittatum, larva, pupa, and pupa in cocoon. Lugger. 



"In our lake regions we find a large number of streams that flow 

 over rocky bottoms, and are obstructed by floating grasses and other 

 submerged plants. When we see a place in which the water flows 

 more rapidly than in others, we can be certain to find there the early 

 stages of buffalo-gnats. By investigating the plants that cause an ob- 

 struction, we find large numbers of larvae and pupse fastened to them. 

 * * * This latter species (S. zittatum) is a great tormentor to 

 humanity, and the proverbial patience of fishermen is severely taxed 

 by their bites. In the northern part of Minnesota this species is called 



