CLASS HEXAPODA. 



67 



formations while in the water ; the adults do not feed, 

 and die in a few hours. 



ORDER NEUROPTERA (nu rop'te ra). 



Neuropterous Insects have a com- FlG - 



plete metamorphosis ; and the lower lip 



is without a median (me'di an) cleft, 



The wings, though resembling those of 



the previous order, are less reticulate. 

 The Caddis-worn <s, found in nearly 



every small body of fresh-water, are the 



larvse of a neuropterous insect, which 



resembles some of the moths. The pupa stage is passed 



in a case, the anterior open- 

 ing of which may be par- 

 tially closed. The Ant Lion 

 is also a larva, and is closely 

 related to the above. It digs 

 a pit, of about two inches 



Limn6ph'\lus ihbm'Wicus. 

 Caddis-worm and Case. 



FIG. 109. 



in diameter, and lies con- 



Section through pit of Ant Lion, sho\vmg the 



insect in the act of throwing sand on a be- cealed at the bottom, Seiz- 

 wildered ant. 



ing any insect that tumbles 



in, and tossing out a shower of sand, to undermine any 

 that try to escape up the sloping sides. 



PIG. 110. 



Myt me'le on for mi cfi'ri vs. Adult Ant Lion. 



