LiFE-IllSTORY OF THE HoVER-FlY. 

 The fly in the foreground is laying licr eggs where slie knows the grecn-flv to be abundant. Above are several full-grown grubs, actively 

 engaged m destroying these garden pests. The mouth of the grub is furnished with hooks, which hold the green-flv whilst it is being sucked 

 dry. Later, each grub will contract, as shown on the twig to the left, and will change to a chrysalis within the grub-skin. The flies on the 

 wing show the thinness of the broad hind-bodv. .^11 the figures are about four times the actual'sizc. 



