18 Lake Maxinkuckee, Physical and Biological Survey 



A bass, presumably Micropterus salmoides, was seen to rise and 

 seize an imago of this species which had been knocked into the 

 Yellow River with a sweep of the net. Another imago was seized 

 and swallowed under similar conditions in Lake Maxinkuckee by a 

 fish which could not be distinctly seen. 



To these direct observations may be added the fact that, in 

 spite of their abundance, not a single example was found floating 

 on the water during the summer. The eggs are deposited near the 

 shore, by repeated dips of the abdomen beneath the surface at 

 nearly the same spot, similar to the practice of L. luctuosa. 



The sexes are occasionally seen paired, but the female is usually 

 alone during egg deposition. 



Found at all the localities visited but especially abundant along 

 the west shore of Lake Maxinkuckee. 



17. PLATHEMIS LYDIA (Drury) 



A large and beautiful species, as strong a flier as the preceding, 

 and considerably more wary. The old pruinose males are very 

 conspicuous, their white bodies showing at a very long distance 

 against the dark background. They also proved to be the most 

 difficult to capture of any species, and only after repeated trials 

 and numerous disappointments could one be gotten into the net. 

 This species seems to prefer the creeks and inlets rather than the 

 open water of the ponds. The sexes do not pair during ovipositing, 

 and the female has a curious habit of placing her eggs in the water 

 on the top of an old lily-pad whose center has become submerged. 



The male is a tireless forager and flies back and forth over the 

 same beat until the supply is apparently exhausted. 



Found in the Outlet between Lake Maxinkuckee and Lost Lake, 

 at the South Inlet, and along several streams emptying into the 

 Yellow River. 



18. CALOPTERYX MACULATA (Beauvois) 



This beautiful black damsel-fly does not come out in the open 

 but sticks to the banks of the small streams where the thick vege- 

 tation throws always a cool shade. They fly slowly and not very 

 strongly with a sort of fluttering motion. 



Their black wings, unmarked save by the white pterostigma in 

 the female, and the bright metallic sheen on the abdomen, make 

 them conspicuous amid the foliage. They congregate in consider- 

 able numbers, and where conditions are favorable the banks of 

 the stream will be fairly lined with them. 



Their eggs are deposited amid the weeds and loose debris near 

 the bank, the sexes pairing during oviposition. 



