RHYNCIIOPHORA. 
201 
occasionally the fruit), and forms a kind of cocoon 
with the petals, wherein it undergoes its changes. 
Other species infest the elms, bramble, &c., in like 
manner. 
In Anoplus, comprising A. plantaris, a small black 
insect, common on birch in summer, the tarsi have no 
last joint or onychium. 
In Orchestes (so named for its jumping habits) the 
head is very little projecting ; the rostrum bent back 
on the under surface in repose ; the eyes are very 
close on the upper side, and very often contiguous ; 
and the posterior legs saltatorial, their femora being 
often enormously developed. It has six joints to the 
funiculus of the antennae, whilst in the closely allied 
Tachyercjp.s there are seven. 
Their larvae are elongate, flat, with no tubercles, 
and mine in the leaves of different trees, eating the 
parenchyma. When full grown they enclose them- 
selves in an oval silky cocoon, the pupa having the 
thorax produced in front into two strong projections, 
and the abdomen ending in two double-jointed projec- 
tions, with several acute tubercles on the last segment 
beneath. 
Certain insects of the genera Tychius and Sibymes 
— the former found chiefly on the vetch and its allies, 
and the latter in dry sandy places — are conspicuous for 
their dense covering of light-coloured scales, being 
often beautifully spotted or banded. In the former 
genus the funiculus of the antennae consists of seven 
joints, whilst in Microtrogus, which very closely resem- 
bles some of its members, it consists of only six. 
These three genera are now usually united together 
under one tribe, Tychiina, which is characterized by 
