PLATE I. 



KANSAS PONDS. 



Photo I. Smith Pond, a muddy pasture pond, frequented by cattle. 

 Here Biienoa was dominant in midsummer. 



Photo. II. The large barren Brick Plant Pool, clay bottom and clay 

 sides, no vegetation and few insects. 



Photo. III. Rock Pool, a small temporary pool in which Notonecta 

 undulata is dominant in early spring. They show as black specks upon 

 the water in the photograph. 



Photo. IV. Another view of Brick Plant Pool. 



Photo. V. Bismarck Grove Pond, a permanent pond, suitable for 

 winter quarters, but containing too little vegetation for many aquatic 

 bugs. A few Belostoma were taken here. 



Photo. VI. A small pond at brick plant. This pond is overgrown 

 with willows and cottonwoods. The bottom is thickly strewn with leaves 

 and brush, ideal winter quarters for many bugs. 



Photo. VII. Cattail Pool from the west end. This end is invaded by 

 cattail. The water here is six inches to a foot deep. 



Photo. VIII. Cattail Pool from the south. The invading cattail on 

 left. Here is the home of Hydrometra. Upon the floating Spirogyra 

 are found Hydrometra, Microvelia horealis and Mesovelia midsanti in 

 great numbers. Gerris marginahis is here and there upon the surface. 

 This temporary pool lies in a rock quarry and dries up in midsummer. 



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