43 8 
THE STUDY OF INSECTS. 
pools of stagnant water, in watering-troughs, and in ex¬ 
posed receptacles of rain-water. 
The long, slender eggs are laid side by side in a boat¬ 
shaped mass, on the surface of the water (Fig. 513). They 
Fig. 513.—A glass of water containing e^gs, larvae, and pupae of mosquitoes. 
hatch in a few days, and the larvae escape from the lower 
ends into the water. The larvae are well known, and are 
commonly called “ wigglers,” a name suggested by their 
wriggling motion as they swim through the water. The 
larva (Fig. 514, a) has a large head and 
thorax and a slender abdomen. The 
next to the last abdominal segment 
Vj| yf- bears a breathing-tube ; and when the 
larva is at rest it hangs head down- 
ward in the water, with the opening of 
* this tube at the surface (Fig. 513). At 
the end of this tube there is a rosette 
<7, larva, i>, pupa. Q f plate-like lobes (Fig. 5 j 5 > a b which, 
floating on the surface of the water, keeps the larva in posi¬ 
tion when at rest. The larva grows rapidly, and after a few 
