38 
RHYNCOTA. 
cases, are represented in England by a number of small 
individuals of a dingy and unattractive appearance. 
They may be known by the position of the antenna) 
which are placed under the eyes. Fig. 6 is an enlarged 
drawing of the prettiest of all the Homopterous insects, 
the Scarlet and Black Hopper ( Cercopis sanquinolenta); 
it is local and cannot be said to be very common any¬ 
where. I find specimens occasionally in this neighbour¬ 
hood sitting generally on fern leaves; it is a good 
hopper, but seldom flies. The Cuckoo-spit Hopper 
(.Aplirophora spumaria) the larva and pupee of which 
envelope themselves in a frothy secretion, is one of the 
same family, the Cercopidoe. Fig. 2 is a representation 
of another Frog-fly very much enlarged—the natural 
size being about 2 lines long—it is the Eupteryx picta , 
Fabr., and may be found sometimes in great abundance 
on potato leaves. It is allied to the common Frog- 
hopper, but the larva does not secrete froth. 
The section Dimer a contains three families ; I have 
only space to notice the Aphidse or Plant-lice, an exces¬ 
sively injurious family of Homopterous insects, which 
may be regarded in respect of the vegetable world as 
analogous to the animal parasites, the Anoplura, already 
noticed. Every agriculturist, every rose cultivator, 
every hop grower has too great reason to be well ac¬ 
quainted with these destructive pests. The species are 
extremely numerous, almost every plant having its own 
peculiar parasite ; they attack the leaves, stems, shoots, 
and even the roots of plants, piercing with their sharp 
proboscis the cuticles and sucking the juices. They 
have many enemies, amongst which may be mentioned 
the Lady-bird Beetles, which both in the larval and 
