117 
wings The honey-tubes are quite short, and there is no stylet at the 
end of the abdomen. The body appears to be slightly powdered or 
pruinose; the abdomen is marked with four transverse rows ot black 
dots; the upper side of the thorax and the veins of the wings are 
black, as are also the tibite and tarsi; the thighs are reddish brown; 
the an ten me are dark and clothed with black hairs. 
Lachnus strobi. Fitch. The M hite-pine Lachnus. 
Found in colonies on the ends of the branches of the white pine, 
and probably also on other pines, puncturing them and extracting their 
juices; giving to the bark on which they are located, a peculiar black 
appearance. The winged individuals measure two-tenths ot an inch 
to the tips of the wings; they are black, hairy and sometimes dusted 
over with a white powder, with a row of white spots along the mid¬ 
dle of the abdomen; the thighs are pale yellowish at the base; the 
fore wings hyaline, with black veins, the third being exceedingly 
slender. "The “wingless individuals are about one-eighth of an inch 
long, brownish black, with a white line along the middle of the 
thorax, and white spots along each side of the abdomen, but the lat¬ 
ter are sometimes very dim, or wanting; antenna? pale, with tips black. 
Dr. Fitch says it is a very common thing to find winged individuals 
with the third vein of the fore wing but once forked, showing the 
very close relation of this species to the wooly plant-lice (Schizmeura). 
It is possible that this may yet prove to be identical with the Lach¬ 
nus pini of Europe. 
Lachnus laricifex. Fitch. The Tamarack Aphis. 
This species is usually found solitary on the small twigs ot the 
American larch (Tamar acU ), stationed chiefly in the axils of the tufts 
of leaves. The wingless individuals, which are the only ones as yet 
described, are of a brownish color, often with a slight coppery tinge; 
length about one eight of an inch; with a dull white line along the 
middle of the back, and a similar whitish band at the sutures of each 
of the abdominal segments; in these bands there are three black punc¬ 
tures on each side of the middle; the short tubeiculai honey-tubes 
dee}> black; the under side dull white and dusted with white powder; 
the legs pale, with the feet and knees black. According to Dr. Fitch, 
from whose report the above description is taken, many of these 
insects were noticed on a particular tree, in May, but no winged ones 
among them. Many of them were accompanied by four 01 more 
‘young, huddled close around the base of the sheath from which the 
leaves arise. These were dull yellow with two biown spots on the 
abdomen, near the base. 
Lachnus abietis. Pitch. The Spruce-tree Lachnus. 
Occurs on the Abies nigra. The wingless females are pubescent, 
broadly oval, blackish, clouded with brown, with a faint ashy stripe on 
