POND LIFE. 



131 



that the female fastens her eggs on 

 the top of her own back with a thin 

 layer of waterproof glue, which she 

 secretes for this purpose. Fig. 106 

 represents a species found in the far 

 West. 



The pinned specimens in your 

 collection should be placed after the 

 water-scorpions under a copy of the 

 following label : — 

 Family BELOSTOMiD^(Bel-os-tom'i-das). fig. 106.— Female, 



with eggs, Serphus. 



The Giant Water-bugs: 



The Wrigglers {Field Work). — The wrigglers, or 

 " wigglers," as they are more commonly called, are so 



well known that 

 it is hardly neces- 

 sary to describe 

 their form that 

 they may be rec- 

 ognized. They 

 abound through- 

 out the warmer 

 part of the )'ear in 

 ponds, in ditches 

 choked with fall- 

 en leaves, and in 

 pools in swampy 

 places. But usu- 

 ally they are most 



Fig. 107. — A glass of water containing eggs, larvae, CaSlly lOUnd in CX- 

 and pup^e of mosquitoes. p^^^j receptacles 



of rain-water, in watering-troughs, and in other sim- 



