INSECTS. 113 
Caddis-Flies (PAryganea)—The caddis-flies often 
have antennz twice as long as the body. The eggs are 
Fic. 135.—Life of the dragon-fly, about one half life-size. @, grub living in 
the water; 7, mask or long lower lip with which it seizes its prey; 4, dragon- 
fly creeping out of its last grub-skin ; c, perfect dragon-fly on the wing. 
carried about by the female, 
attached to her abdomen, and 
finally deposited upon some 
water-plant where they hatch, 
the larve seeking the bottom, 
where they build coverings FIG, 136.—Caddis-worm, with its 
(Fig. 136) of wood, stone, case, made of sticks. 
shell, or sand. When about 
to change into a pupa they close the mouth of the case, 
finally biting their way out, and crawling to the surface a 
perfect insect. 
