GLIMMERCHAFFER. 41 



water-plants: they hatch in the space of about 

 eight days, and immediately begin to swim about 

 with much briskness in quest of prey. 



Most of the exotic Gyrini have a strong general 

 resemblance to this species, but differ in size and 

 colour, though noafc hitherto discovered can be 

 considered as lare insects. 



