112 



THE FOOD OF ANIMALS 



excavating at the centre, but commences operations by construct- 

 ing a groove to correspond with the margin of the proposed pit. 



Fig. 387. The Ant-Lion (Myrmeleoformicarius}. Perfect Insect, and Larva with its Pit 



Then it buries its abdomen in the sand, heaps some of the loose 

 material on its head by means of the fore-legs, and pitches it 

 off with a jerk to some little distance. The meaning of the 



