GLIMMER-CHAFER. 
271 
convenient water-plant, and after casting its skin 
becomes a chrysalis: this change usually takes place 
in the month of August, and the complete insect 
emerges in that of September.” 
The glimmer-chafer effects its rapid gyrations in 
the water with the hind legs, which are very broad, 
and act like a pair of oars. 
