racterized in a brief article upon this insect published by 
nas in our Eighth Entomological Report. I have here to 
le occurrence in Illinois of a second species of this family, 
in habit, (and apparently in life history also), to its well- 
slative. 
h 1 • • 
s a small yellowish species which we found at Normal on 
of May, and occasionally thereafter, puncturing the blades 
petioles of the leaves of the pear trees. It presents all the 
rs of the genus Trioza, having, however, the frontal lobes 
nclined (projecting downward decidedly more than forward) 
present the aspect of a beak. 
irages .1 inch in length. The surface is opaque, thorax 
i yellow, abdomen blackish brown. The head is twice as 
long across the eyes, nearly as wide as the thorax; the 
ery widely emarginate in front, the foveae opaque but not 
very large, occupying nearly the whole of the upper surface, 
ex is usually black, edged with yellow posteriorly, but the 
sometimes reduced to a transverse blotch surrounded by 
>r even to two black spots occupying the centers of the 
The face is black, frontal lobes diverging somewhat, hairy, 
longer hairs varying in color from white with black tips to 
lack. The antennae are as long as the head and thorax, 
; basal joints and the basal half of the third white some- 
aded with dusky. The third joint is four-fifths as long as 
1th and fifth together. The last two joints are thickened, 
mited, forming a slight club, and the last bears a minute 
al appendage at its inferior tip and a short hair above. 
aim narrow, white in the middle, brown, or black on the 
ith a white point upon the lower edge. The dorsulum 
naked, a little longer than the mesonotum, closely and 
r punctured, brownish yellow, often clouded with dusky, 
jstinctly seen in front, where brownish blotches sometimes 
one upon either side of the middle. The sutures are all 
osterior margins straight in the middle; the sides, a little 
in front of the suture, bearing each a short black spine. 
mesonotum and scutellum are brownish yellow, alutaceous 
dorsulum, with a conspicuous lanceolate or oval longitudi- 
m stripe or blotch on each side the middle, and an oblique 
utside this, usually less evident than the preceding. Scutel- 
lted, plain in all the specimens examined. Wings hyaline, 
rownish yellow. 
egs of the first and second pairs are sometimes wholly 
xcept the tarsi, which are black, but the femora are some- 
msky only above, and the tibiae only in front. The hind 
are commonly dusky above, but the tibiae and the basal 
the tarsus pale. Abdomen purplish brown with pale posterior 
( the segments; conspicuously hairy at tip. 
bed from ten specimens. 
er species of Trioza, ( T . diospyri), first described by Ash- 
>m the persimmon in Florida, and found by us abundant 
tree in Southern Illinois, was likewise occasionally seen at 
