98 



Lessons in Zoology. 



eyes and between the antennae. The largest of the simple 

 eyes (Fig. 2, oe) is in front of this projection, the two 

 smaller (oc') at either side of it. The npper lip (Za) is 

 easily lifted with a pin, and jaet below it are the dark 

 brown, horny mandibles {md) and the second maxillae 

 («tx"), which hide away in their broad cavity the small 

 first maxlllsB and the thick tongue. 



Fig. 3 repreBenta a larva eollected in Angnst, three timea life 

 size, mx" being the mask ; w' and w", wing-pads jast appearing. 



tnx 



In Fig. 4, the papa is shown with the spoon-shaped 

 mask {jn/xl') extended to seize food. This mask is the 

 greatly enlarged second pair of maxillae, and when not in 

 use, is folded back over the mouth so as to hide the 

 strong mandibles. 



The dragon-fly lays its eggs on water-plants. When 

 the pupa is ready for the last change, it climbs up on 

 some plant, the skin of its back splits open, and the 

 dragon-fly pulls itself out. This insect does not deserve 

 the name " darning-needle," since it has neither sting nor 

 powerfol jaws, but its threatening appearance may well 

 gain for it the name dragon-fly. 



