338 FIFTH_ REPORT OF THE ENTOMOLOGICAL COMMISSION. 
4. TilK ML'SCLi: siiAl'KD BUTTERNUT BA&K-LOU8K. 
dapidiotut (MiftiUupis) juylandis Fitch. 
Order Hkmii'TKKa j family COOCIDJB. 
Fixed to the bark of the twigs, miuiite pale brownish scales, like those of the apple 
bark-louse, but smaller and not curved ; preyed upon by a minute chalcid fly. (Fitch.) 
5. THE HKMI8PHBBICAL BUTTERNUT SCALE-INSECT. 
Ltcanium juglandiftx Fitcb. 
Adhering to the bark on the under side of the limbs, a hemispherical dull yellow- 
ish or black scale about 0.'2i inch long aud 0.18 broad, notched at its hind end, fre- 
quently showing a paler stripe aloug its middle and a paler margin and transverse 
blackish bands. (Fitch.) 
The males, according to Fitch, are long and narrow, delicate two- 
winged flies, measuring 0.05 inch to the tip of the abdomen and a third 
more to the ends of the wings. They are of a rusty reddish color, the 
thorax darker aud the scutel and head blackish, this last being sepa- 
rated from the body by a narrow pale-red neck. The antennae are 
slender and thread-like, half as long as the body and eight-jointed. 
Two slender white bristles as loug as the body are appended to the tip 
of the abdomen. This description will apply to most of the males of 
other species of Lecanium. 
AFFECTING THE LEAVES. 
6. The butternut woolly worm. 
Selandria carya' Norton. 
Order Hymenoptera ; family Tenthredinid.e. 
On the under side of the leaves companies of saw-fly larva covered with long dense 
snow-white wool standing up in flattened masses entirely concealing the green worm, 
eating the leaflets from the outer edge inward, often leaving nothing but the midribs. 
These remarkable objects occasionally, though rarely, appear on the 
butternut in July. The worm presents the appearance (as described in 
our 4i Guide to the Study of In- 
sects," from which the following 
description and figures are takeu) 
of an animated white woolly or cot- 
tony mass nearly an inch loug and 
two-thirds as high. The head of 
the larva is rounded, pale whitish, 
aud covered with a snow-white pow- 
dery secretion, with prominent 
black eyes. The body is cylindrical, 
F,„. 127. The batternut woolly worm and the . h . fa . f f fle§h ftb . 
sanu' deprived ol it* coat— From Packard. & f <* 
dominal legs; the segments are 
transversely wrinkled, pale pea-green, with a powdery secretion low 
down on the sides, but above and on the back arise long flattened masses 
