OK, MANUAI, OF THB APIARY. 



483 



a silken tube (Fig. 262), which they have power to spin. They 

 remain in this tunnel of silk during- all their growth, enlarg- 

 ing it as they eat. The noise, as they eat, can be heard 

 plainly by holding the comb to the ear. As they tunnel 



Fig. 262. 



Fig. 263. 



Turuiel of Bec-MotU Larva. — Original. 



Tunnel in Comb. — Original. 



among the larvje in brood-combs, the larvae are destroyed, and 

 will be removed from the hives. Thus, the presence of dead 

 larvse in front of the hive is often a sign of the presence of 

 insects in the hive. By looking closely, the presence of these 



Fig, 264. 



Larvce of Bee-Mofli. — Original. 



larvae may be known by this robe of glistening silk, as it 

 extends in branching outlines (Fig. 263) along the surface of 

 the comb. A more speedy detection, even, than the defaced 

 comb, comes from the particles of comb, intermingled with 



