37° 



AN ECONOMIC ENTOMOLOGY. 



by frequent dipping, using a carbolated dip which reachly de- 

 stroys the insect. Thorough washing after shearing will usually 

 clear the animals completely, and if the entire herd be once 

 freed, it will remain so until infested animals are introduced. 

 The parasites are able to move from one to the other only when 

 the animals are herded close together. 



Yet more louse-like in appearance is the little whitish creature, 

 Braula cceca, found upon the honey-bee as a parasite ; but it 



Fig. 426. 



Bee-louse, Braula ccrca, and its larva ; much enlarged. 



seems to be rather rare, and. in our country at least, does not 

 assume the dimensions of a serious pest. 



CHAPTER IX. 



THE HYMENOPTERA. 



Bees, Wasps, Ants, Saw-Jiles, etc. 



There is no order of greater interest than this, containing as 

 it does the bees, wasps, and ants, the most useful as well as the 

 most intelligent of the insects. By treating them last, the inten- 

 tion is not to suggest that they are lowest, but rather that they 

 are the culminating point in the development of the class. Here 

 we find social organizations not unlike some of our own systems 

 of government, but more complete and running much more 



