ON APHIDES. 



On the rose-buds are numerous Aphides, A. Rosce, of the natural size; in 

 the foreground are individuals of the same, winged and wingless, magnified. 

 In the midst cf some small Aphides on a leaf is the leech-like grub of a Scceva 

 Pyrastri, thinning their numbers, and to the right is a winged Fly, the mature 

 condition of the same. Another species of the genus, Sccuva balteata^ is seen 

 above in different positions on the wing. To the left on a branch of elder, are 

 individuals of the Elder Aphis, A. Sambucaria, beneath which is a magnified 

 representation of the same attended by a Brown Ant, Formica brunnea, pro- 

 curing a supply of honey-dew. 



UT \vhat sort of insects are Aphides? demands 

 perhaps a reader who is no entomologist. In 

 plain English, they are Plant-lice. But what 

 are Plant-lice? is the question put by another 

 who is no observer of nature. Let us inquire 

 in reply, what is a Wasp, a Spider, a Butterfly ? Did you ever 



