522 
ANNUAL REPORT OF NEW-YORK 
bug, though of a brighter red color when it is small. One of 
these young chinch bugs which I met with in some diseased 
wheat straw sent from Virginia presented the following charac¬ 
ters : 
The you yc; larva when 0.06 long is about 0.03 in width, with a very flattened 
body of an oval form and a bright blood red color, with a band across its middle 
above, of a yellowish white color, occupying the two first or basal segments of its 
abdomen, behind which, in the centre of the back are two black spots, one behind 
the other. Its six legs and its beak or sucker, are of a honey-yellow color. Its 
antenna; are analagous to what they arc in the mature insect, having four joints, 
the last enlarged, forming an oval knob tapering to a point at its end, the two ba¬ 
sal joints being light yellow, and the two last ones dark brown. 
These larvrn as they advance in size become darker colored 
and finally blackish, still showing the white band across the 
middle of their bodies. At length this band disappears, and 
the insect becomes a pupa. It is now much like the perfect in¬ 
sect in its form and colors, except that it is destitute of the white 
wings upon its back, having in place of them an oval black 
scale upon each side of the base of the abdomen. The edges of 
the abdomen in the pupa are also of a dull pale yellow color. 
So late as the fore part of October I met with several of these in¬ 
sects still in their pupa state, and some of these I do not doubt, 
would pass the winter in that state, and therefore would not de¬ 
posit their eggs until the following spring. 
The females of this species are tenfold more numerous than 
the males. The magnified illustration, plate 4, fig. 2 a, shows all 
parts of the insect so distinctly and exact that no description of 
it is necessary, beyond what is given in Dr. Le Baron’s account. 
It may be observed that the hind edge of the thorax is of the 
same deep honey-yellow color with the legs, the beak, and the 
base of the antennae, all the rest of the body and the antennse 
being coal-black and clothed with fine erect hairs, except the 
wing-covers which are snow white. The anterior end of the 
thorax is not so full and broad as represented in the figure, and 
extending across the thorax rather back of its middle is a trans¬ 
verse depression, much more deep and distinct in some individ¬ 
uals than in others. 
Tins species presents several varieties. On a comparison of numerous sped 
mens the following will be readily distinguished: 
a, imingrginptus. Basal margin of the tliorax uot edged with yellowish. Conns 011, 
