FAMILY GASTEROSTEIDAE 



257 



Figure 56. Ninespine stickleback, Punggitius pungitiu^, 1 1/4 inches long. 



Marais, Minnesota by T. S. Roberts in 1879. It is abundant in the lower 

 parts of most of the Minnesota streams flowing into Lake Superior and 

 has been collected from Lake Vermilion in the Arctic drainage. In Wis- 

 consin Greene (1935) found it in Lake Superior and Lake Michigan. 

 This species inhabits both fresh and brackish waters and is found 

 throughout northern Europe and North America from the Great Lakes 

 northward. Its habits are similar to those of Eucalia inconstans. 



