Lake Maxinkuckee, Physical and Biological Survey 17 



with white. A male of this species was the only dragon-fly found 

 during the entire summer floating in the water. On two occasions 

 when knocked into the water by the net, imagos were seen to be 

 eaten by Redeyes. 



Found on the northern and western shores of Lake Maxin- 

 kuckee, at Lost Lake, Twin Lakes, and Bass Lake. 



13. LIBELLULA INCESTA Hagen 



An extremely wary species, the males frequenting the tall reeds 

 and rushes along shore. They are constantly on the watch and 

 will not allow the collector to approach near enough to strike them 

 with the net. They are also easily frightened and at once retire 

 out of sight and remain hidden. No female was found during the 

 entire season, and they must have been concealed in the grass 

 away from the water's edge. 



This species was only rarely seen around Lake Maxinkuckee 

 and Lost Lake, but was fairly common along the Outlet between 

 the two lakes. 



14. LIBELLULA CYANEA Fabricins 



Like the preceding, only the males of this species were found, 

 and they frequented the tall reeds and rushes along the Outlet in 

 company with incesta. They were not quite so wary and they also 

 stay closer to the ground, alighting on the sides of the rushes or 

 ■ on broken stems. The bi-colored pterostigma and the tinges of 

 color adjacent to it, and also at the base of both pairs of wings, 

 can be distinguished at some distance and at once separate this 

 species from any with which it would be likely to become con- 

 fused. The females kept themselves so closely hidden that not 

 one was seen during the season. 



Found rarely in Lake Maxinkuckee and commonly along the 

 Outlet in company with i7icesta. 



15. LIBELLULA QUADRIMACULATA Linnaeus 



This beautiful species was the most widely distributed and, 

 next to L. luctuosa, the most abundant of the large dragon-flies. 



It is especially a pond-loving species, but was found also along 

 the banks of the two rivers visited, along the banks of several of 

 the cross-country ditches, around pools in the country barnyards, 

 and even occasionally skimming the fields at some distance from 

 the water. It is a strong flier and fairly wary. It also alights but 

 seldom and keeps excellent watch. But it is also quite curious, and 

 once or twice when the net was held out quietly it flew up near 

 enough to be caught. 



2— 17618— Vol. -' 



