22 Lake Maxinkuckee, Physical and Biological Survey 



bright green in color, and easily overlooked in the green foliage. 

 The sexes are usually paired and the female deposits her eggs on 

 the stems of rushes lying in the water. The eggs are pale in color 

 and fastened on the surface rather than inserted in the substance 

 of the rush. 



Found along the outlet below Lost Lake. 



30. NEHALENNIA POSITA (Hagen) 



Another tiny species, even smaller than the preceding, living 

 amongst the cow-lily stems and pads out in the open lake. The 

 male is usually bronze-black in color, ornamented with bright yel- 

 low and is much easier to distinguish than irene. The eggs are 

 laid similarly on floating vegetation. 



Found among the cow-lilies in Lost Lake, and in the South 

 Inlet of Lake Maxinkuckee, where it is fairly common. 



31. ENALLAGMA HAGENI (Walsh) 



A brightly marked blue species found in great numbers on the 

 rushes in shallow water along the shores of Lake Maxinkuckee 

 and Lost Lake. It was more abundant in July than in August, and 

 had nearly disappeared by the last of the latter month. The sexes 

 are nearly always paired and the female seems to prefer depositing 

 her eggs on a broken or floating rush stem. The eggs are dark in 

 color and are fastened on the surface of the floating material in 

 great black patches. The males of this species like those of Argia 

 have the habit of holding themselves in the air by a rapid beating 

 of the wings while the female is ovipositing. As many as 50 or 

 60 couples may often be seen on the same rush stem, literally cov- 

 ering all the available space. They are quite tame, allowing the 

 boat to pass so close that one could touch them by extending the 

 arm. 



32. ENALLAGMA CARUNCULATUM Morse 



Another bright blue species, a little larger than the preced- 

 ing and not nearly as common. The two were found associated 

 on the rushes in Lake Maxinkuckee and cannot be distinguished 

 with certainty except by an examination of the abdominal ap- 

 pendages in the male. Their habits of pairing and oviposition are 

 similar, but the eggs found were not as dark in color as those of 

 hageni. This species probably occurs on the other lakes but did 

 not happen to be found on the days when those lakes were visited. 



