Lake Maxinkuckee, Physical and Biological Survey 19 



A single male was captured on the Outlet between Lake Maxin- 

 kuckee and Lost Lake. They were found in great numbers on 

 the Yellow River, Tippecanoe River and in some of the cross-coun- 

 try ditches to the west of Culver. 



19. HETAERINA AMERICANA (Fabricius) 



A species that is common around rocky ripples in the streams 

 and rivers where the water is shallow and the banks are grown 

 up with the water willow, Dianthera. It stays close to the water's 

 edge on the leaves of the willow and does not fly far even when dis- 

 turbed. When flying, the bright red spots at the base of the wings 

 of the male make it conspicuous but on alighting these spots are 

 concealed by the folding of the wings. The eggs are deposited 

 on the willow leaves at the water's edge, and the sexes are paired 

 during the process. A blind sweep of the net along the willows at 

 such times will often capture ten or a dozen pairs. 



Very common along the Outlet, at Yellow and Tippecanoe 

 rivers, and in the cross-country ditches to the west of Culver. 



20. HETAERINA TRICOLOR (Burmeister) 



This species frequents the same localities as the preceding, and 

 is very similar to it, the chief difference being in the posterior 

 wings of the male, which are brown instead of red. 



It is not therefore as conspicuous when flying as the preceding, 

 but when at rest the only appreciable difference is one of size, 

 tricolor being a little the larger. Its eggs, like those of the pre- 

 ceding species, are deposited in the weeds at the water's edge, the 

 sexes pairing during oviposition. 



Found at Tippecanoe and Yellow rivers, and in a cross-country 

 ditch close to the Tippecanoe. 



21. LESTES UNGUICULATUS Hagen 



This species is somewhat smaller and not so dark colored as the 

 two which follow. The dorsal surface of the abdomen is an iri- 

 descent, metallic green, turning to pruinose in mature specimens. 

 The white color at either end of the pterostigma furnishes a good 

 mark for identification. 



It flies swiftly and hides in the dense vegetation around the 

 marshes and along the shore, coming out only to lay its eggs. 



Found in considerable numbers at Hawk's marsh late in Au- 

 gust and rarely along the Outlet between Lake Maxinkuckee and 

 Lost Lake. 



