eT 
ever, adds little to our previous knowledge of the insect, except to 
report its occurrence in destructive numbers in the orchards of Cen- 
tral Iowa. 
It was not mentioned in the numerous and voluminous reports of 
Dr. Fitch as State Entomologist of New York, nor in that of Prof. 
Lintner, his successor. Dr. Fitch gives, however, a detailed account 
of another species of the genus which occurs throughout the United 
States, and seems to have become especially destructive in New 
York, during the year 1669. This is the Lygus lincaius, of Fabricius ; 
a species whose life history, habits, and injuries to vegetation, are 
extremely similar to those of the insect under consideration. This 
was common enough in Illinois to attract the attention of Dr. Le Baron 
in 1870, and was briefly treated by him in his first report, under 
‘the name of the “Four-striped plant-bug, Capsus (Phytocoris) quad- 
rivittatus, Say.” 
In the State Reports of Illinois, as already said, our “tarnished 
plant bug” has received no attention, beyond incidental allusions 
made to it in the second of the series (pp. 62, 65 and C6.) 
DESCRIPTION. 
Adult. (Plate XI, Fig. 1). This species, when mature, is about 
one-fifth of an inch by half that in width, oval in general outline, and 
yellowish or greenish yellow in general color, more or less striped 
and mottled with dusky. 
The head forms a nearly equilateral triangle, with obtuse angles. 
Its upper surface is shining and nearly smooth, sparsely pilose, and 
with two rows of rather coarse punctures on either side of the 
middle line. The eyes are prominent, rounded, and red or black 
in color. The head is yellow, with a median black stripe which 
extends on to the nasus as a black or rufous patch. Hach side of 
this median stripe is another, running nearly parallel with it, which 
is, however, often nearly obsolete. These stripes extend to the 
bases of the antenna, around which is a rufous area which sends a 
narrow line backward just within the upper margin of the eye. <A 
reddish band also extends forward upon the side of the head from 
the anterior end of the eye to the base of the rostrum, where it 
meets a similar line which passes backward along the sheath of the 
rostrum. ‘The head is sometimes wholly yellow, without markings, 
and those described may be variously obsolete or wanting. 
The thorax is trapezoidai in ovtline, strongly narrowed forwards, 
the anterior margin being about half the length of the posterior. 
The latter is regularly rounded, the sides are straight, and not mar- 
gined. Just within the anterior border, a sub-marginal, impressed 
line marks off a smooth, marginal callus, and behind this the ante- 
rior fourth of the disk of the thorax 1s separated by a less deeply 
impressed line, before which the surface is nearly smooth. ‘The 
surface of the pronotum generally is coarsely and rather closely 
punctured, the punctures being somewhat smaller and thicker on 
the sides and posterior declivity, where they have a tendency to a 
serial arrangement. From cach puncture springs a short, pale, 
weak hair. 
