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( "X V 





The central insects, swimming on their backs, are examples of the Water 

 Boatmen, Notonecta glauca, the nearer one being attacked by the little Whirl - 

 wig Beetle. Gyrinus natator, while the other is gliding head foremost into the 

 extended jaws of the fierce larva of the Water Beetle, Hydrophilus caraboides- 

 On the rushes to the right is a Water Scorpion, Nepa cinerea. In the distance 

 are the linear forms of two Water Measurers, Hydrometra stagnorum, and below 

 them is a Water Bug of less slender growth, Velio, currens. The figures above 

 represent the Water Scorpion and Water Boatman inflight. 



WATER-DEVILS. 



S we have before observed, nothing can have a 

 greater general tendency to augment our enjoy- 

 ment of the country than the study of Entomo- 

 logy; yet one day, as has happened occasionally 

 before, our little learning on the subject of 

 insects served to cast a shade, though it was but a passing one, 



