854 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 
40. The bpruge-tree leaf-hopper. 
A tkj f m mmt abittia Fitch. 
Order SeMIPTEBA; family TeTTIGOMTIDJC. 
Puncturing their leaves and extracting their juices the latter part of May and dur- 
ing the month of June, an oblong black shining leaf-bopper 0.20 long, tapering pos- 
teriorly, and broadest across the base of the thorax, with a light-yellow head, having 
the mouth black, and also two bands upon the crown, the ends of which are often 
united, and commonly with a white streak on the middle of the inner edge of the 
wing-covers, its legs being pale yellowish varied more or less with black. 
"I first met with several specimens of this insect eleven years since, 
upon the black spruce and fir balsam, on the summit of the Green 
Mountains, in an excursion hither with that martyr of science, the late 
Prof. C. B. Adams. Since then I have repeatedly captured this same 
insect upon birch trees, distant from any spruces, and it is possible it 
might have been accidentally present on these latter trees in the in- 
stance first mentioned, there being numerous birch trees iu the same 
vicinity.'' (Fitch.) 
AFFECTING THE CONES. 
41. The Spruce Cone- worm.* 
Pinipestis renicultlla Grote. 
This is the first occurrence, so far as we know, of a caterpillar preying 
upon the terminal fresh young cones of the Spruce. We have pre- 
viously t called attention to the Spruce Bud-louse (Adelges abieticolens) 
which deforms the terminal shoots of the spruce, producing large swell- 
ings which would be readily mistaken for the cones of the same tree. 
Another species of Bud-louse (Adelges abietis Linn.), which appears to 
be the same as the European insect of that name, we observed several 
years since (August, 1881) in considerable numbers on the Xorway 
Spruces on the grounds of the Peabody Academy of Sciences at Salem. 
The species of caterpillar in question was observed, August 24, in 
considerable numbers on a young spruce 10 to 20 feet in height at Mere- 
point on Casco Bay, Maine. The cones on the terminal shoot as well 
as the lateral upper branches, which when healthy and unaffected were 
purplish green and about 1J inches long, were for the most part mined 
by a rather large Phycid caterpillar. The worm was of the usual shape 
and color, especially resembling a Phycid caterpillar not uncommon iu 
certain seasons on the twigs of the Pitch Pine, on which it produces 
large unsightly masses of castings within which the worms hide. 
* Reprinted from Bulletin U. S. Department of Agriculture, Division of Entomology, 
No 13. 1887. 
t Guide to the Study of Insects, p. 523, and Bulletin 7, l\ S. Ent. Comm.. p. "234. 
