6 
Phyllotreta nemorum and P. undulata: these are blackish, 
with an ochrey or yellowish stripe along each wing-case, 
and may be distinguished from each other by the P. 
nemorum having yellow shanks, and also being rather 
larger and more coarsely punctured than the P. undulata. 
Another kind is of a greenish black or brassy tint, and 
also is distinguished by having a tooth on each pair of 
hinder shanks. This is known as the Hop or Tooth - 
Tooth-legged Flea-beetle, nat. size and magnified; hind leg of 
ditto, magnified. 
legged Flea-beetle, scientifically as the Chcetocnema 
concinna (Stephens). Formerly they were scientifically 
known as different species of Haltica. 
Two great points to be attended to with regard to Fly 
are to clear it out beforehand, or to support the crop 
under the attack if it occurs. 
To clear it out we should allow these Flea-beetles no 
winter shelter in rubbish filive or dead, and we should 
starve them out in the spring by destroying their wild 
food-plants, which are mostly very conspicuous, and which 
keep them in comfortable circumstances until the delicate 
new food of our crops attracts them to it. But as even 
with the best care the pest may come from neighbouring 
shelter over which we have no power, or be borne on the 
wing in hot sunshiny weather, the next thing is to 
induce such a hearty growth of the crop as may run it 
quickly through its first stages to the rough leaf, in which 
the Fly has much less power over it; and it will be seen 
