FOOD OF INSECTS. 143 



enough to perceive this difficulty, when he says of 

 such insects {Hijmenoptera) that they have teeth, not 

 for feeding but for fulfilhng other instincts,* such as 

 building cells of wax, and similar materials. In the 

 systems, however, founded on Clairville's arrange- 

 ment, bees and other insects of the same order are 

 classed among eating insects. As it would not suit 

 the design of our little work to throw in the way of 

 the reader any difficulties of this kind which we can 

 avoid, we shall follow a hint thrown out by Kirby and 

 Spence,! and consider them under the three-fold di- 

 vision of eaters, lappers, and suckers, though plausi- 

 ble objections, we are well aware, may be made to 

 this, as well as to most other arrangements. 



* De Partib. Animal., iv, 5. t Intr. iii, 418= 



